Pipes & Fittings Copper Yorkshire

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Yorkshire Potable integral solder ring fittings

The difference is quality

IMI Yorkshire Fittings Limited MI Yorkshire Fittings Limited has been working with copper and its alloys for over one hundred years. From our head office in Stourton, Leeds, we have developed our ranges of fittings and valves to such a degree that they are now widely regarded as among the best engineered products of their kind.

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In 1968, Yorkshire Imperial Metals was incorporated into the Building Products Group of IMI plc, a major international industrial group and in 1986 took on its present identity and the name IMI Yorkshire Fittings Limited. Since then we have developed from a company with a largely UK focus to a major European supplier with manufacturing, sales and distribution operations throughout Europe, servicing domestic and export markets all over the world.

1888 Elmore’s begin making copper tube.

THE YORKSHIRE COPPER WORKS PONTEFRACT ROAD LEEDS

1909 The Yorkshire Copper Works starts production of plumbing materials.

The first industrial use of our Stourton site dates from 1888 when Elmore’s Depositing Co. manufactured copper tubes here. However, in the early 1800s the site was a racecourse and the venue for the St. Leger. The Yorkshire connection began in 1909 when Elmore’s became the Yorkshire Copper Works (YCW), producing high quality condenser tubing. The advent of the First World War saw a break in tube production as the company was requisitioned to manufacture munitions for the war effort. However, by the 1920s normal production had resumed and, from the 1930s, business boomed as copper enjoyed widespread growth in domestic plumbing systems. In the period following the launch of its now world famous Yorkshire integral solder ring fitting in 1934, the Yorkshire Copper Works was so successful that in 1958 it merged with the ICI Metals Division to become known as Yorkshire Imperial Metals (YIM).

Over the past one hundred years our experience of working with copper and its alloys to develop solutions for pipework system designers and installers has given us the expertise to manufacture the highest quality products for industrial and domestic users throughout the world. With Yorkshire Potable integral solder ring fittings, Kuterlite compression fittings, Endex end feed fittings, Tectite push-fit fittings and Jimten compression fittings for MDPE pipe and the valve ranges we offer a fitting for every conceivable plumbing and heating application.

1934 The Yorkshire range of integral solder ring fittings is patented and launched.

1985 IMI Yorkshire Fittings leads the market with the introduction of Yorkshire Potable, the same tried and tested patterns but with a new tin/copper lead free solder.

PAGE TWO

Yorkshire Potable fittings MI Yorkshire Fittings’ integral solder ring fitting, launched in 1934 and protected by patent for 25 years, introduced a completely new concept to plumbing and led to the development of light gauge copper tubes. During manufacture an ‘integral’ ring of high quality lead free solder is positioned in the wall of each capillary socket. The principle of capillary attraction ensures that when heat is applied to the exterior of the fitting, the solder is drawn into the gap between the tube and the fitting, forming a completely reliable joint without the need for additional solder or end feeding.

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Back in 1934, the uniqueness of the idea was matched by an unprecedented sales campaign by purposely trained staff who travelled the length and breadth of the country demonstrating this revolutionary new fitting. From their specially equipped vans, they demonstrated the principle of the Yorkshire integral solder ring fitting to architects, plumbers merchants and tradesmen although they would not mention how the solder was inserted into the fitting – which at that time was a closely guarded secret. Yorkshire integral solder ring fittings were initially produced from one mill on the Stourton site, however demand for the fitting was such that the construction of two more mills followed in rapid succession. Today Yorkshire Potable integral solder ring fittings are still manufactured exclusively in Leeds, although, with the range now comprising over 900 different items in addition to high duty and large size fittings, valves, accessories and heating components, production is now based on modern cellular manufacturing systems.

In response to concern by Government agencies regarding the potential risks associated with lead in drinking water, all the Yorkshire Potable integral solder ring fittings manufactured since 1985 have contained a lead-free solder and are marked YP (Yorkshire Potable). This solder was specially developed by the company and is now incorporated in British Standards. With its distinctive mark the Yorkshire Potable range provides installers, specifiers and water companies with a visible assurance that no lead solder is present in a Yorkshire installation.

Contents Pages two and three Introduction. Page four Yorkshire today. Page five A choice of materials and the benefits of copper. Pages six and seven Compatible tube materials. Pages eight and nine The Yorkshire range. Pages ten and eleven Standards, approvals regulations and a guarantee of quality and reliability. Page twelve A step-by-step guide to installing Yorkshire fittings.

The popularity and practicality of the Yorkshire integral solder ring fitting has never waned and its reputation for reliability has led to it being installed in many prestigious buildings such as the Royal Armouries Museum in Leeds and the Globe Theatre in London, as well as a host of Cunard luxury liners.

Page thirteen Design considerations. Pages fourteen and fifteen Yorkshire Potable fittings. Pages sixteen and seventeen General high duty. Pages eighteen and nineteen Wedge ring and waste fittings. Pages twenty and twenty one An introduction to heating components and Sidewinder cylinder conversion coil. Pages twenty two and twenty three Micraversion cylinder conversion element and manifolds. Pages twenty four and twenty five Yorkshire accessories. Page twenty six An introduction to Yorkshire valves and gate valves. Page twenty seven Stopvalves. Pages twenty eight and twenty nine Aquadapt and plugcocks. Pages thirty and thirty one Customer service.

PAGE THREE

Yorkshire today he Yorkshire Potable integral solder ring fitting is precision-made and uses the principle of capillary attraction to allow solder to fill the gap between the fitting socket and the tube.

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need to estimate the quantity of solder required to make a secure, reliable joint. Once heated, the appearance of the solder around the mouth of the socket is absolute assurance that the joint has been correctly made.

Compact dimensions Yorkshire Potable integral solder ring fittings are light and neat, making handling and installation easy. The compact dimensions of the fittings make best use of limited space in ducts and other restricted areas. In addition, the fittings’ smooth lines minimise flow restrictions and are unobtrusive on exposed pipelines.

Specification The most influential architects and mechanical services engineers in the country specify Yorkshire with total confidence when a project requires capillary fittings.

The principle of the Yorkshire Potable integral solder ring fitting

Prestigious fittings Yorkshire fittings have been used on some of the most innovative projects of the last few years.

During manufacture, a ring of high quality, lead-free solder is positioned in each capillary socket. The solder is released when heat is applied to the fitting, and forms a totally reliable joint, without the need for additional solder.

Proven advantages of the Yorkshire Potable integral solder ring fitting

Jointing when access is restricted

Yorkshire Potable integral solder ring (ISR) fittings contain a precise, measured amount of solder, so there is no need to end feed to make a perfect joint. For the installer, it removes the problems of expensive solder waste and the

Providing that cleaning and fluxing is properly carried out, Yorkshire Potable integral solder ring fittings, with their slim, compact dimensions, can often be installed in locations inaccessible to other types of fittings.

PAGE FOUR

A choice of materials orkshire Potable integral solder ring fittings are manufactured from three different types of material copper, gunmetal or a Dezincification resistant brass (DZR).

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Internationally recognised marking All Yorkshire Potable fittings manufactured from DZR alloy carry the distinctive mark.

For areas prone to dezincification Dezincification is a complex corrosion process that can lead to the premature failure of fittings made of duplex brass. Yorkshire Potable fittings are manufactured from copper, gunmetal or DZR alloy and are all fully resistant to dezincification.

Special finishes As Yorkshire Potable fittings may be used in situations where they are on show - for instance, in bathrooms – where both functionality and maximum aesthetic appeal are required they are available in a chrome plate finish. This can either be to a commercial chrome plate finish or, available to order in polished quality chrome plate.

Gunmetal Some Yorkshire Potable fittings and valves are manufactured from gunmetal and can be identified by the GM mark on the body.

The benefits of copper

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or plumbing and heating applications copper tubes and fittings offer substantial benefits over other pipeline materials.

The earliest recorded use of copper for conveying water is a conduit at Abusir in Egypt. Dated to 2750 BC, it is almost 4,750 years old and is still in a remarkable state of preservation.

Over four thousand years later, at the beginning of the 20th century, copper was once again being used for carrying water in Europe and America in public buildings, hospitals and similar institutions. Its relatively high cost at the time was outweighed by its proven corrosion resistance, which resulted in long service and negligible maintenance costs.

Today, copper and copper alloys are recognised as the only tried and tested plumbing materials on the grounds of corrosion resistance alone. Properly installed copper and copper alloy systems can be expected to outlast many of the buildings in which they are installed. In fact, once a copper and copper alloy system is installed it will require no regular maintenance and is extremely resilient, giving excellent protection against contaminants that threaten the domestic water supply. Nothing can get through the walls – no fluids, no germs and no oxygen. Copper does not absorb organic substances and cannot be softened by them in service. This means that in situations where the use of other pipeline materials is restricted under United Kingdom Water Byelaws, for example in ground subject to spillage of hydrocarbons, such as oil, petrol or creosote, copper and it’s alloys can be used with complete confidence. And because they are non-permeable, will take any paint finish you wish to apply as well as being totally unaffected by the sun’s ultra violet rays. Copper and copper alloys are fit-and-forget plumbing materials with a proven track record of long and trouble-free service, giving peace of mind to specifiers and installers alike.

PAGE FIVE

A proven track record One of the earliest copper plumbing systems installed in this country can be found in the Bank of England in Threadneedle Street, London.

Compatible tube materials The introduction of EN 1057 will affect the material temper references for copper tube and the way tube is specified. Material tempers Table W and Table Y soft copper tube becomes R220, Table Y and Table X halfhard tube becomes R250. Ordering When ordering half-hard copper tube with an outside diameter of 15mm and a wall thickness of 0.7mm (BS 2871 Part 1 Table X), the following designation should be used: Copper tube EN 1057 –R250–15 x 0.7mm

orkshire Potable integral solder ring capillary fittings are suitable for jointing copper tube to the new European standard EN 1057.

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Because this new standard is a combination of the existing European copper tube standards, most currently available products will continue to be obtainable. There are, however, a number of changes, most importantly to tube sizes and material temper references. In drawing up the standard, the committee responsible took the opportunity to rationalise tube sizes. As a result, EN 1057 stipulates European recommended dimensions and other existing European, but nonrecommended, dimensions. Under EN 1057, Table W and Table Y soft condition copper tube has the designated material temper reference R220. Table X and Table Y half-hard tube becomes R250. EN 1057 – R220 Soft coiled tubes

Key W BS 2871, Part 1, Table W

0.6

6mm

W

8mm

W

10mm X BS 2871, Part 1, Table X

Wall thickness (mm)

Outside diameter

0.7

0.8

0.9

1.0

1.2

Y Y W

Y Y

12mm

Y

15mm 22mm

Y

28mm

Y

Y BS 2871, Part 1, Table Y

EN 1057 – R250 Half hard straight length tubes Outside diameter

Wall thickness (mm) 0.6

0.7

0.8

6mm

X

Y

8mm

X

Y

10mm

X

Y

12mm

X

15mm

0.9

1.0

1.2

1.5

2.0

2.5

Y X

Y

22mm

X

Y

28mm

X

Y

35mm

X

Y

42mm

X

Y

54mm

X

Y

66.7mm

X

Y

76.1mm

X

108mm

X

133mm

X

Y Y X

159mm 66.7 x 2.0mm is designated as “other European dimensions”

PAGE SIX

Compatible tube materials Copper tube

Working pressures and temperatures of tubes For details of the maximum permissible working pressures and temperatures for all tube types refer to manufacturer’s literature.

EN 1057 – R250 A general purpose half-hard condition copper tube for above ground services, including potable water, hot and cold water services, central heating and sanitation. EN 1057 – R220 A thick-walled copper tube available in soft condition coils or as half-hard condition straight lengths suitable for potable water, hot and cold water services, central heating and sanitation.

High performance Yorkshire fittings used in conjunction with copper tube to the appropriate standard will withstand pressure never reached under normal service conditions.

Decorative chrome plated copper tube: EN 1057 – R250 A half-hard copper tube with a decorative chrome plate finish for above ground services. Chrome plated tube is particularly suited for use in installations where finished pipework is likely to be exposed. The new European specification for chrome plated copper tube is identical to that for EN 1057 – R250.

Versatility Unlike other materials copper and copper alloy tubes and fittings are available in standard sizes from 6mm to 159mm.

Stainless steel tube The use of integral solder ring fittings with stainless steel tube is not recommended.

Proven materials Where pipework is exposed, the aesthetic qualities of copper and copper alloys speak for themselves. The strength of the materials mean that pipelines are virtually self-supporting, requiring only limited clipping. Most valves and pumps can be supported without the need for additional clips or brackets.

For more information about copper tube contact: IMI Yorkshire Copper Tube Limited, East Lancashire Road, Kirkby, Liverpool, L33 7TU Telephone (0151) 546 2700 (0151) 546 5881 Fax

PAGE SEVEN

The Yorkshire range n addition to standard line fittings, the Yorkshire Potable range also includes an extensive selection of heating components; valves and accessories for use with domestic hot and cold water services, heating installations, sanitation services and many other liquids and gases. Specific ranges of fittings, such as general high duty and wedge ring have been developed for commercial and industrial applications, such as steam and condensate pipelines and other engineering applications.

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All the fittings you’ll ever need The IMI Yorkshire Fittings’ catalogue provides a comprehensive list of available products.

Yorkshire wedge ring fittings Purpose designed large size wedge ring fittings in 76.1mm and 108mm sizes with lead free tin/silver solder. Fittings with reduced ends smaller than 76.1mm contain tin/copper solder. Wedge ring fittings are manufactured from copper, gunmetal or other dezincification resistant alloy and are designed for jointing copper tube primarily in water services, heating and sanitary applications.

Yorkshire Potable fittings A range of integral solder ring (ISR) capillary fittings manufactured from copper or copper alloys for jointing copper tube in hot and cold water services, heating systems, in sanitation services for domestic, commercial and hospital applications and industrial applications such as gas distribution systems. Each fitting contains a precise amount of lead free solder for a perfect joint every time.

YP logo Every Yorkshire Potable fitting carries this distinctive logo as proof that is a genuine Yorkshire Potable fitting and that the solder is lead free.

Yorkshire waste fittings A range of copper, brass and gunmetal integral solder ring fittings in sizes and configurations compatible with standard domestic and commercial waste systems.

Yorkshire general high duty A range of capillary fittings in gunmetal (LG4) or aluminium brass with an integral silver brazing alloy specifically designed for heavy duty applications where the capabilities of soft solders are exceeded, such as high temperature steam and condensate pipelines. General high duty fittings are also suitable for use in medical gas lines, vacuum, refrigeration and cryogenic applications.

PAGE EIGHT

Accessories A comprehensive range of Yorkshire accessories is available including re-rounding tools, tube straightners and benders, assembly tools, cleaning pads, heat resistant mats, fluxes and valve keys.

The Yorkshire range Pipe clips and brackets

Valves and controls

A comprehensive selection of pipe clips and brackets is available including saddle bands, wall brackets, hospital brackets and pipe joist clips.

The Yorkshire Potable range is complemented by an extensive selection of valves and accessories for both domestic and industrial applications. Gate valves – a range of brass and gunmetal full bore valves designed to control flow in hot and cold water services, central heating systems, oil lines, steam installations, compressed air lines and certain chemical supply lines, particularly where a low pressure drop is required.

Manifolds

Stopvalves – a range of Stopvalves with gunmetal bodies and brass, DZR or gunmetal headworks for controlling flow in both hot and cold water services.

Heating components

Micraversion

To complement Yorkshire Potable ISR fittings installed in heating installations, a comprehensive selection of components for use in vented or unvented heating systems is also available. Manifolds – a range of linear and side entry manifolds for use in minibore central heating systems, enabling the system to be tailored to suit the layouts of domestic or commercial vented or unvented heating systems.

Sidewinder

Micraversion element – a tubular copper heat exchanger designed for the easy and economic conversion of copper direct hot water cylinders to indirect use. The micraversion is designed to fit into the immersion heater boss of direct cylinders. Sidewinder – a copper conversion coil designed to convert copper cylinders from direct to indirect use. The copper sidewinder is fitted in such a way that there is little or no disturbance to the existing copper cylinder or, in many cases, to the existing electrical immersion heater.

Gate valves

Plugcocks – a range of plugcocks manufactured from brass and designed for use on low pressure gas and water applications. Yorkshire plugcocks are available with oblong bores for gas services or full round bores for water services. Certain variants are available with a drop headwork, for use where space is restricted, or with union outlet connections. Aquadapt – a unique stopvalve water meter adaptor that eliminates the drawbacks associated with installing an internal meter. The Aquadapt simply replaces the existing stopvalve headwork allowing a water meter to be fitted.

PAGE NINE

Plugcocks

Aquadapt

Current and future standards n line with our commitment to manufacturing to the highest quality levels, Yorkshire Potable fittings and valves comply with the current British, European and International standards.

Yorkshire wedge ring fittings

Future developments

BS 10 Specification for flanges and bolting for pipes, valves, and fittings

I Quality systems IMI Yorkshire Fittings Limited is a British Standards Institution registered company.

Evaluated by the WRc The Yorkshire Potable range has been tested by the WRc and is audited periodically.

We recognise that the current programme of standard harmonisation may affect the standards relevant to the Yorkshire Potable range. Indeed BS 864 Part 2, the standard for capillary and compression fittings of copper and copper alloy will be replaced by EN 1254 Parts 1 to 5 in the near future. IMI Yorkshire Fittings is actively involved in the drafting of this and other new European standards and has members on the relevant European standards committees. Whatever the developments, we guarantee that our products will always meet the latest and highest standards.

Yorkshire Potable integral solder ring fittings

International Standards Organisation International standards are conformed to where appropriate.

BS 864: Part 2 Specification for capillary and compression fittings of copper and copper alloy for copper tubes pr EN 1254 Part 1 Specification for copper and copper alloy fittings with capillary ends for soldering and brazing for use with copper tubes BS2779/ISO 228/1 Specification for pipe threads and fittings where pressure tight joints are not made on the threads (metric dimensions)

BS EN 29453 (previously BS 219) Specification for soft solders

BS 4504: section 3.3 Specification for copper alloy and composite flanges BS EN 29453 (previously BS 219) Specification for soft solders

Yorkshire general high duty fittings BS 1845 Specification for filler metals for brazing

Yorkshire waste fittings BS EN 29453 (previously BS 219) Specification for soft solders

Manifolds Capillary ends conform to BS 864 Part 2 all other ends conform to IMI Yorkshire Fittings’ own exacting internal quality standards.

Micraversion heating element Micraversion is manufactured to IMI Yorkshire Fittings’ own exacting internal quality standards.

Sidewinder conversion coil BS2779/ISO 228/1 Specification for pipe threads and fittings where pressure tight joints are not made on the threads (metric dimensions) Tube standard EN 1057 – R250

BS 1010 Part 2 Draw off taps, above ground Stopvalves and union ends

Yorkshire gate valves

BS 10 Specification for flanges and bolting for pipes, valves, and fittings

BS 5154 Specification for copper alloy globe, globe stop and check, check and gate valves

BS 4504: section 3.3 Specification for copper alloy and composite flanges

Ends in accordance with BS 864 Part 2 (pr EN 1254 Part 1).

PAGE TEN

Guaranteed for 25 years pr EN 1982 Specification for copper and copper alloys, ingots and castings BS 2872 Specification for copper and copper alloy forging stock and forgings pr EN 12165 Specification for copper and copper alloys, wrought and unwrought forging stocks BS 2874 Specification for copper and copper alloy rods and sections other than forging stock ( including testing for dezincification resistance) of alloys CZ121 (CW614N), CZ122 (CW617N), CZ132 (CW602N)

Commitment to customer satisfaction Every Yorkshire Potable fitting is guaranteed for 25 years against manufacturing defects.

pr EN 12162 Specification for profiles and rectangular bar for general purposes

Yorkshire stopvalves

pr EN 12163 Specification for copper and copper alloy rod for general purposes

BS 1010 Part 2 Draw off taps, above ground Stopvalves and union ends

pr EN 12164 Specification for copper and copper alloy rod for free machining purposes

BS 1010 stopvalve ends are in accordance with BS 864 Part 2 (pr EN 1254 Part 1).

pr EN 12168 Specification for hollow rod for free machining purposes

BS 2879 Specification for draining taps (screw down pattern)

Quality systems

BS 5433 Specification for underground Stopvalves for water services

All Yorkshire products are manufactured under quality systems in accordance with EN 29002/ISO 9002.

Yorkshire plugcocks BS 1552 Specification for manual shut off valves for use with first and second family gases Ends are in accordance with BS 864 Part 2 (pr EN 1254 Part 1).

Contact with the trade IMI Yorkshire Fittings is an industrial associate of the Institute of Plumbing, an influential body in the industry.

Where appropriate Yorkshire products carry the kitemark symbol of the British Standards Institution.

UKWFBS listed Where appropriate Yorkshire products are United Kingdom Water Fittings Byelaws Scheme approved, further evidence that our products meet the most exacting industry standards. The WRc regularly re-audits Yorkshire Potable fittings before continued UKWFBS listing is given.

Links with Merchant groups Industry trends and customer opinions can be monitored through the BMF.

The keyword is quality

Aquadapt Aquadapt conforms to IMI Yorkshire Fittings’ own exacting internal quality standards.

Material specifications Yorkshire Potable fittings and valves are manufactured to the following specifications for materials used. BS 1400 Specification for copper alloy ingots and copper alloy high conductivity copper castings

Continuous product development is at the heart of IMI Yorkshire Fittings’ company policy, both in the design and development of new products and the refining of existing ones. Our manufacturing processes are also subject to constant monitoring and evaluation to ensure that each fitting is of the very highest quality.

Links with end users As members of the National Association of Plumbing, Heating and Mechanical Services Contractors we can monitor the views of installers.

25 year guarantee Our policy of continuously and rigorously testing Yorkshire fittings means we are confident that they will give years of trouble free service. To demonstrate the total confidence we have in our products and our commitment to customer service, all Yorkshire fittings are guaranteed against manufacturing defects for 25 years.

PAGE ELEVEN

Regional patterns Association with regional bodies like the SNIPEF also helps to create a broader picture of the industry.

Easy installation he following instructions for jointing Yorkshire Potable integral solder ring fittings illustrate just how easy it is to use Yorkshire products. Installation details for Yorkshire general high duty and Yorkshire wedge ring fittings can be found on pages sixteen and seventeen respectively.

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The fittings use the principle of capillary attraction to allow solder to fill the gap between fitting and tube to form a completely reliable joint.

Preliminaries Select the correct size of tube and fittings for the job. Ensure the ends of the tube are cut square and remove any burr from the inside or outside. Re-round the ends with a re-rounding tool if using fully annealed tube i.e. EN 1057 – R220/R250.

Installation tips 1. The reliability of soldered joints is greatly influenced by the type of flux used. Yorkshire flux and Traditional Craftsman’s flux are especially formulated for jointing copper tubes with Yorkshire and Endex fittings. However, regardless of which flux is chosen, the tube and fitting should always be cleaned before fluxing. All fluxes are, to some extent, corrosive but special care should be taken with so-called self cleaning fluxes. It is important that the system is flushed immediately after soldering, especially if the system is to be left empty for any length of time. External flux residues should also be removed to prevent unsightly stains or in extreme cases corrosion of pipework. 2. If one or more ends of a YP fitting are to remain unmade a short length of correctly sized, uncleaned tube should be inserted into the ends to be left unjointed. Keep this section

cool by wrapping a wet rag around it while heating the remaining ends.

Assembly:

3. Remaking joints: Joints made with Yorkshire Potable fittings are difficult to disconnect due to the intermetallic bonding between the solder and the copper of the fitting and tube and therefore the re-use of Yorkshire Potable fittings is not generally recommended. However, in some situations, joints can be remade by fluxing the tinned portion of the tube and reinserting this into the fitting. Then heat the joint and hand-feed lead-free solder. If a new tube is to be used, clean and flux the tube before assembly. End feed lead free solder at the mouth of the socket after reheating.

Step 1 Clean the inside of the fitting socket and the outside of the tube with a Yorkshire cleaning pad, fine sandpaper, or steel wool.

4. Most male connectors eg. YP3, YP8, and YP13 have taper BSP threads and may require the use of jointing materials, it is advisable that soldering operations are completed before such materials are applied to the threads. For domestic water services, the use of a UKWFBS (WRc) listed jointing compound complying with BS 6956 Part 5 or PTFE tape complying with BS 6974 and satisfying the requirements of BS 6920 Part 1 is recommended. When installing fittings with parallel connector threads, a good quality jointing washer should be used. 5. Union fittings have metal-to-metal cone joints to BS 1010. Avoid damaging the mating faces and, if required, use a UKWFBS (WRc) listed jointing compound complying with BS 6956 Part 5 or apply a sufficient amount of PTFE tape complying with BS 6974 and satisfying the requirements of BS 6920 Part 1. Tighten the joint with a spanner. 6. If it is necessary to break into existing pipes for repairs or to fit new branches, slip couplings or tees which have no tube stops make the job easier and avoid disturbing the rest of the system.

Using Yorkshire Potable fittings with chrome plated tube As solder will not bond to chrome plate the plating needs to be removed before a joint is made.

Step 2 Using a suitable brush, apply adequate but not excessive Yorkshire flux to both the outside surface of the tube and the inside surface of the fitting socket.

Step 3 Insert the tube into the fitting until it reaches the tube stop, then wipe off any excess flux. Heat the assembled joint until a complete ring of solder appears at the mouth of the fitting.

1. Remove chrome plating from the tube for the distance the tube goes into the fitting using coarse emery cloth, followed by fine sandpaper or a Yorkshire cleaning pad. 2. After applying flux to the surface of the tube and fitting heat the joint in the usual manner. 3. Discolouration of the chromium caused by heating the joint can be removed by washing the fitting with soap and warm water immediately after the joint has cooled.

PA G E T W E LV E

Step 4 Allow the joint to cool without disturbance. Clean the joint generally.

Design considerations major consideration when designing plumbing and heating systems is thermal movement. Pipework systems expand and contract with changes in temperature and will be subjected to stress if their movement is restricted. So, particularly with central heating systems, always account for the effects of thermal movement when designing or installing a system.

Basic techniques for expansion stress relief

A

Horseshoe expansion link

Copper has a coefficient in linear expansion of 17 x 10-6/˚C. As an example, a 10 metre length of copper pipe carrying domestic hot water at 60˚C will expand by almost 7mm (more than 1⁄4") when heated from an ambient temperature of 20˚C.

Crossover tee arrangement

In addition, assuming that temperature cycling of the system is 20˚C, there will be a continuous cycle of expansion and contraction of 3.4mm taking place. The table below gives the expansion in mm of copper tube for various rises in temperature.

Expansion loop Suitable for 6, 8 and 10mm tubes only

Tee and cross specification

UK specification First quote the ends on the run (larger end first) and then the branches.

Clearly the stresses imposed can be considerable if no allowance is made for thermal movement. Stress concentrations between ‘fixed points’ typically found at radiators, valves and other fittings should be avoided wherever possible. Anchoring the branch of a tee, or connecting a radiator by means of too short a spur, will prevent normal thermal movement and may lead to failure. As such, expansion loops or bellows devices should be incorporated at appropriate points within the system. When continual thermal cycling is encountered, a horse shoe link, or loop formed from one length of the tube, is recommended. Wherever pipework is to be installed under screed or plaster, it is very important to make adequate allowance for thermal movement. The preferred practice is to lay tubing in ducts surrounded by loose, non-rigid material such as vermiculite or glass wool. A useful reference document to consult for further information is BS 6700 water services in buildings. Temperature change °C

European specification Quote the larger end first, then the branch, followed by the remaining end and finally for crosses, the remaining branch.

10 20 30 40 50 60 70 80 90 100

3

4

5

6

0.5 1.0 1.5 2.0 2.6 3.1 3.6 4.1 4.6 5.1

0.7 1.4 2.0 2.7 3.4 4.1 4.8 5.4 6.1 6.8

0.9 1.7 2.6 3.4 4.3 5.1 6.0 6.8 7.7 8.5

1.0 2.0 3.1 4.1 5.1 6.1 7.1 8.2 9.2 10.2

PAGE THIRTEEN

Adapting imperial to metric with Yorkshire Sometimes a Yorkshire Potable fitting may need to be connected to an older installation where imperial sized tube has been used. This presents no problem - simply use a Yorkshire Potable imperial to metric adaptor coupling. One end of the adaptor fits onto imperial pipe and the other on to metric pipe. Yorkshire Potable imperial to metric adaptors are available in several combinations.

Threaded connectors Yorkshire Potable male threaded connectors for jointing pipework to boilers, pumps or backplate elbows have taper male BSP threads. A small quantity of inert jointing compound or PTFE tape should be applied to the male thread before installing the fittings.

Female connectors Yorkshire Potable female threaded connectors have internal threads to BS 2779 and should be used for general connections from male threaded fittings to copper pipework. Tube length (m) 7 8 1.2 2.4 3.6 4.8 6.0 7.1 8.3 9.5 10.7 11.9

1.4 2.7 4.1 5.4 6.8 8.2 9.5 10.9 12.2 13.6

9

10

12

25

1.5 3.0 4.6 6.1 7.7 9.2 10.7 12.2 13.8 15.3

1.7 3.4 5.1 6.8 8.5 10.2 11.9 13.6 15.3 17.0

2.0 4.0 6.1 8.2 10.2 12.2 14.3 16.3 18.4 20.4

4.3 8.5 13 17 21 26 30 34 38 43

Yorkshire Potable fittings he integral solder ring in the Yorkshire Potable (YP) range contains lead-free solder. The YP mark is your assurance that these fittings fully comply with the current UK Water Byelaws.

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Most Yorkshire Potable integral solder ring fittings are manufactured from copper or, where this is not possible from suitable copper alloys. In this case the quality is noted by the ‘GM’ mark on castings and mark on fittings made from Dezincification Resistant alloys.

Where to use Yorkshire Potable fittings

Comprehensive Range The Yorkshire range offers more than a 100 patterns.

Yorkshire Potable integral solder ring fittings are suitable for use on all direct and indirect, hot and cold domestic water services, in small bore and minibore central heating systems and in low pressure steam heating and pressurised unvented heating systems within permitted temperature and pressure limits. In addition, they can be used in sanitation services for all types of domestic, commercial and hospital applications.

PAGE FOURTEEN

The fittings are also suitable for commercial and industrial applications including; compressed air lines, gas distribution systems for natural and manufactured gases, with fuel oils and kerosene and on engineering pipeline services that convey liquids, oils, air and gases at temperatures up to 110˚C.

Size range Yorkshire Potable fittings are manufactured to fit tube sizes from 6mm to 108mm outside diameter and are designed for jointing copper tubes to EN 1057 . The extensive range of patterns available enables the installer to select the right Yorkshire Potable fitting whatever the situation.

Yorkshire Potable fittings

Fibre washers Where tap connectors or other fittings are assembled with fibre washers, service temperatures must not exceed 100°C. Gas services Fibre washers are not suitable for use on gas service pipelines.

Working pressures and temperatures

Standards and approvals

BS 864: Part 2 specifies hydraulic working pressures and temperatures for fittings assembled with tubes to EN 1057.

Yorkshire Potable fittings in sizes 6mm to 67mm comply with BS 864 Part 2.

Size 6 – 54mm 67mm

30°C

Service temperature 65°C 110°C

16 bar 10 bar

10 bar 6 bar

6 bar 4 bar

External BSP (taper) threads are machined to BS 864 : Part 2. External and internal BSP parallel threads conform with BS 2779 and ISO R228/1. Imperial flanges have bolt hole sizes and flange outside diameters to BS 10 Table D. Metric flanges have bolt hole sizes and flange outside diameters to BS 4504 section 3.3. The solder used in Yorkshire Potable fittings is BS EN 29453 alloy number 23 for sizes 6mm to 67mm. Yorkshire Potable fittings are kitemarked, UKWFBS listed and are, in addition, approved by all UK Municipal Authorities, British Gas Plc. and many other approval organisations worldwide.

Helpful specification clauses

Solder content Yorkshire Potable integral solder ring fittings contain tin/copper lead-free solder, alloy number 23 with a melting range of 227 – 235˚C. Jointing temperatures can be easily reached using a conventional heat source such as a propane or butane torch.

To ensure the right product for the job the correct terminology to use in your specification is “All integral solder ring fittings shall conform to BS 864 Part 2 (pr EN 1254 Part 1) and be drawn from the Yorkshire Potable range as supplied by IMI Yorkshire Fittings Limited”.

PAGE FIFTEEN

Yorkshire general high duty orkshire general high duty fittings are specially designed for use with copper and copper alloy tubes which need to operate at higher temperatures or pressures than are permissible with soft solder joints.

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The range is made from gunmetal (LG4 and LG2) or aluminium brass. The integral solder ring is of a cadmium-free silver brazing alloy, complying with the compositional requirements of BS 1845 alloy Ag14. The jointing temperature for general high duty fittings is approximately 700˚C and is lower than that required to make a brass brazed joint, thus the risk of overheating the tube and fitting is reduced.

Where to use general high duty fittings Yorkshire general high duty fittings should be used for systems in which service conditions exceed the capabilities of soft solders, for example, high temperature heating services such as, steam and condensate pipelines. The characteristics of the joint make the fitting suitable for hydraulic services where vibration and stresses are imposed. The range is also suitable for specialised services where high temperatures and pressures exist singly or in combination. Other uses include; refrigeration, cryogenic, vacuum, air-conditioning services, vehicle braking systems and gas lines – medical, nitrogen and oxygen.

Size range General high duty fittings are manufactured to fit tube sizes from 6mm to 54mm outside diameter and are designed for jointing copper and copper alloy tubes to EN 1057.

Installation preliminaries

Assembly

1. Select the correct size of fitting and tube. 2. Ensure that the tube ends are cut square and remove any burrs. Do not use a rotary tube cutter as this tends to reduce the diameter of the tube ends. 3. Clean the outside of the tube and inside and end face of each fitting socket with fine sandpaper, Yorkshire cleaning pad or aluminabased paper or cloth. 4. General high duty fittings require the use of the correct flux. Flux is supplied as either ready mixed paste or powder. If powder flux is used sufficient should be mixed with clean water and blended into a creamy paste. Mix the flux as required and keep the powder in the container dry - replace the lid immediately after use.

Step 1 Clean the outside of the tube and the inside of the fitting with fine sandpaper or a Yorkshire cleaning pad.

Installation tips 1. The source of heat should be sufficiently large to heat the tube and fitting gently to a visible red heat in poor daylight – approximately 700°C. 2. When heating general high duty joints use an oxy/gas, oxy/acetylene or oxy/propane torch of the appropriate size. 3. A large, soft, neutral or slightly reducing flame should be used to avoid excessive local heating, and the torch should be kept moving throughout the making of the joint. 4. Recommended fluxs include: a. Degussa ‘H’ ready mixed paste. b. Easy-Flo powder flux. Satisfactory joints can however be made with other suitable silver brazing alloy fluxes. 5. Union type fittings such as 11GHD, 65GHD and 69GHD have round nose-to-seat joints.

PAGE SIXTEEN

Step 2 With a small brush, apply the flux paste to the inside of the fitting socket and the outside of the tube, to a length slightly greater than the socket depth. Insert the tube into the fitting until it reaches the stop, preferably twisting the tube in the fitting to spread the flux. Ensure that the tubes are correctly lined up and adequately supported, otherwise distortion or cracking of the fittings may occur when at brazing temperature.

Yorkshire general high duty

Step 3 Heat the appropriate socket and tube to approximately 700˚C (red heat in poor daylight). Continue heating until a complete ring of solder appears round the socket month. This is proof of a sound joint. Continue to heat generally for a few seconds. Repeat this method for each joint in turn. If for any reason the complete ring of solder does not appear, apply additional flux to the mouth of the socket and end feed the joint with Johnson Mathey’s Silver-Flo 55 or equivalent silver brazing alloy to the compositional requirements of BS 1845 Ag 14.

To avoid leaks, care should be taken to protect the jointing faces from damage. Any flux residues and scale must be removed after heating. With joints of this type, it is essential to use a UKWFBS (WRc) listed jointing compound complying with BS 6956 Part 5 or sufficient PTFE tape complying with BS 6974 and satisfying the requirements of BS 6920 Part 1 to obtain completely satisfactory results. 6. Silver brazing alloy fluxes must be used with care and always in a well ventilated area. The safety precautions detailed on the flux containers must be strictly followed. Further information is available on request.

Step 4 Allow joints to cool without disturbance. Do not quench in water. Residual flux must be removed when cold with warm water, a steel wire brush or abrasive. If required, oxide films can be removed with an abrasive or by chemical means.

7. Joints made with Yorkshire general high duty fittings should be regarded as permanent. If it is anticipated that the system will have to be broken into, fittings such as the 11GHD union coupling should be installed at appropriate points. The use of composite flanges offers a very satisfactory alternative, particularly in the larger sizes (22mm – 54mm). Yorcalloy flanges in sizes 22mm to 54mm inclusive with BS 10 table D outers are available for the general high duty range. For further details, please contact your local sales office. 8. The use of disconnecting fittings also allow sections of the installation to be completed on the workbench, thus avoiding the need to make joints in difficult places. This prefabrication technique is particularly recommended in the case of the larger sizes (22mm – 54mm).

PAGE SEVENTEEN

9. Imperial to metric adaptors: Where the layout permits, the most economical way of adapting from imperial to metric is to use the 9GHD.

Working pressures and temperatures For non marine applications, all sizes are designed to operate with tubes to EN 1057 outside diameters. Maximum working pressures for applications not subject to classification society requirements Size

Service temperature 150°C 175°C 200°C

6mm 8mm 12mm 15 – 54mm

242 bar 202 bar 158 bar 69 bar

151 bar 128 bar 99 bar 43 bar

61 bar 51 bar 40 bar 17 bar

Standards and approvals Yorkshire general high duty fittings are designed to IMI Yorkshire Fittings’ own exacting standards with designs based on Lloyds formula.

Helpful specification clauses To ensure the right product for the job the correct terminology to use in your specification is “All general high duty fittings shall be drawn from the Yorkshire general high duty range as supplied by IMI Yorkshire Fittings Limited”.

Yorkshire wedge ring fittings Using the assembly tool

hese specially designed wedge ring fittings contain an integral soft solder ring for the trouble-free jointing of copper tubes to EN 1057. The range is manufactured from gunmetal or copper.

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All fittings incorporate lead-free solder and all ends contain tin/silver solder (Alloy number 29 Sn97Ag3), except reduced ends with diameters smaller than 76.1mm which contain tin/copper solder (Alloy number 23 Sn99Cu1). Step 1 Slip the wedge ring onto the tube, with the thinner edge towards the fitting, and push the tube into the fitting up to the tube stop. By hand, press the ring as far as possible into the mouth of the fitting.

1. Select the correct size of fitting and tube. 2. Ensure that the tube ends are cut square and remove any burrs. 3. Clean the outside of the tube with fine sandpaper or a Yorkshire cleaning pad. 4. Flux the tube end, the socket of the fitting and both sides of the tapered ring with Yorkshire flux.

Because of the dimensional tolerance variations of 76.1 and 108mm tubes, it is not possible to obtain the correct capillary conditions for soft soldering with parallel socket fittings.

Assembly

To overcome this, Yorkshire wedge ring fittings are made with tapered sockets. The annular space between the socket wall and the parallel tube is occupied by a pre-tinned tapered wedge ring, pushed home by the special assembly jig. The wedge ring enables the correct soldering tolerances to be achieved.

2. Take the assembly tool, unscrew the nuts, and open the tool.

Flange connectors are available in 76.1mm and 108mm sizes with flange bolt hole sizes and flange outside diameters to BS 4504 section 3.3 (metric) or BS 10 table D (imperial). Step 2 Take the assembly tool, unscrew the nuts, and open the tool. Locate the assembly tool on the fitting and tube, ensuring that the captive part engages the shoulder of the fitting. See that the sliding part of the tool is free to engage the exposed face of the wedge ring. Then make sure that both halves of the tool are completely closed.

Installation preliminaries

Where to use Yorkshire wedge ring fittings Wedge ring fittings are ideal for jointing copper pipelines, primarily for potable water services, water heating, sanitation and many engineering applications.

Size range The Yorkshire wedge ring range comprises couplings, reducers, connectors, bends, tees and stop ends and flanges in both 76.1 mm and 108mm sizes.

Step 3 Screw both nuts hand tight then, using a spanner, tighten the nuts alternately, exerting an even pressure on the wedge ring until it is felt that the ring has been pressed home. Unscrew the nuts, remove the assembly tool and repeat the procedure for the remaining ends of the fitting.

PAGE EIGHTEEN

1. Slip the wedge ring onto the tube, with the thinner edge towards the fitting, and push the tube into the fitting, press the ring as far as possible into the mouth of the fitting by hand.

3. Locate the assembly tool on the fitting and tube, ensuring that captive part engages the shoulder of the fitting. See that the sliding part of the tool is free to engage on the exposed face of the wedge ring. Then make sure that both halves of the assembly tool are completely closed. 4. Screw both nuts hand tight then, using an open ended spanner or good quality adjustable spanner, tighten the nuts alternately, exerting an even pressure on the wedge ring until it is felt that the ring has been pressed home. DO NOT USE EXCESSIVE FORCE. The tapered wedge ring, when pressed home, may be a little above or below the level of the mouth of the fitting. 5. Unscrew the nuts, remove the assembly tool and repeat stages 1 to 5 for the remaining end(s) of the fitting. 6. Heat the joint. Because of the large mass of metal in the tube and the fitting, it is necessary to use a blowlamp giving a flame of generous

Yorkshire wedge ring fittings proportions or, alternatively, an air/gas blow torch. Heat each joint separately. Do not concentrate the flame at one point. Heat around the fitting socket and the tube where it enters the fitting. Continue heating until complete rings of solder appear between the tube and the tapered ring, and between the tapered ring and the fitting.

The appearance of these two rings of solder is essential and, when visible, they are proof of a sound joint. When the tolerance between tube and fitting is such that the outer end of the tapered ring is below the mouth of the fitting, the two solder rings may join together. 7. Leave the joint(s) undisturbed to cool. 8. Remove external flux residues and, where appropriate, flush out the pipework.

Step 4 Assembled joint ready for heating.

Working pressures and temperatures Size

30°C

76.1mm 108mm

Service temperature 65°C 110°C

10 bar 10 bar

5 bar 5 bar

1 bar 1 bar

Helpful specification clauses To ensure the right product for the job the correct terminology to use in your specification is “All 76.1mm and 108mm fittings shall be drawn from the Yorkshire wedge ring range as supplied by IMI Yorkshire Fittings Limited”.

Yorkshire waste fittings

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range of copper and copper alloy fittings in sizes suitable for domestic and commercial waste systems.

Where to use Yorkshire waste fittings Waste fittings are designed for connecting to basins, baths and sinks and other sanitary appliances in domestic and commercial properties. The range has been specifically developed to enable the installation of

effective waste water systems. In addition to line fittings, the range includes shallow and deep seal traps as well as a selection of fittings with rodding eyes to enable inspection and cleaning of the pipework. Bends, tees and crosses are designed with built in fall as required by good plumbing practice.

Size range The Yorkshire waste range is available in standard sizes from 28mm to 54mm.

Standards and approvals Yorkshire waste fittings are manufactured to IMI Yorkshire Fittings’ own exacting internal quality standards.

Helpful specification clauses To ensure the right product for the job the correct terminology to use in your specification is “All waste fittings shall be drawn from the Yorkshire waste fittings range as supplied by IMI Yorkshire Fittings Limited”.

PAGE NINETEEN

Waste system maintenance Some patterns are available with rodding eyes which allow access to pipework in order to remove blockages.

Yorkshire heating components

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MI Yorkshire Fittings supplies a comprehensive range of components specifically for use in heating systems.

Yorkshire heating components are designed to make the installation of heating systems quick and economical. The wide range of products available ensures that Yorkshire heating components are suitable for nearly all types of heating installation.

A comprehensive selection of manifolds, including linear flow and side entry manifolds are available, as well as the Micrafold which may be used with 8mm and 10mm heating installations. Cylinder conversion coils, for converting copper cylinders from direct to indirect use are also included within the heating components range making heating systems versatile and adaptable.

Sidewinder conversion coil tubular copper coil heat exchanger designed for the simple and economic conversion of direct hot water cylinders to indirect use to enable the converted unit to operate as a purpose made unit. All materials in the Sidewinder conversion coil are resistant to dezincification.

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Where to use the Sidewinder The Sidewinder conversion coil is suitable for use in copper cylinders with a capacity of up to 180 litres. Cylinders should be from 380mm (15") diameter upwards to allow the coil to be inserted from the side. Where the capacity of the cylinder exceeds 180 litres, two or more coils should be installed, depending on the performance required. The Sidewinder conversion coil will operate on both gravity and pumped primaries wherever combined central heating and domestic hot water services are required. The conversion coil can be used with smallbore, minibore, pressurised or non-pressurised central heating systems. The coil is particularly effective where natural (gravity) circulation is required. Sidewinder conversion coils can be used for industrial applications where low output heat exchangers are required such as vats or tanks.

Connections Flow and return connections to the Sidewinder should be made with the following 3 ⁄4" capillary or compression connectors: Yorkshire Potable YP72 plus a YP64 or YP68 Kuterlite 612 – 22 x 3⁄4" or 28 x 3⁄4"

When installation is complete, refill the cylinder and recharge the primary circuit in the normal way.

Installation

Installation If the Sidewinder conversion coil is to be fitted to a pre-insulated cylinder, the installer should first check that there will be sufficient clearance around the holes to enable the Sidewinder conversion coil to be fitted without damaging either the coil or the cylinder. After draining the cylinder, any existing flow and return pipes should be disconnected and the cylinder connections sealed with cap nuts or plugs as appropriate, e.g. Yorkshire 470 DZR or 450 DZR. Decide where best to position the Sidewinder conversion coil within the cylinder. The coil should be installed near the bottom of the cylinder and should not come into contact with the electric immersion heater element. If necessary remove the immersion heater. Draw two circles, A and B, using the template provided, ensuring they are positioned vertically, to illustrate the position of the coil ends on the cylinder wall and punch the centres. Around the top circle A, and using the same centre, mark a second circle 70mm (23⁄4") in diameter (using the outer copper washer supplied as a guide) to ensure the correct final alignment of the coil when installed. Drill the hole 54mm (21⁄8") diameter. Drill the bottom hole B 27mm (11⁄16") diameter. Smooth the edges of both holes before feeding in the coil. Insert one end of coil into the cylinder through hole A, having first secured a fibre washer to the threaded end with jointing paste. Slowly wind the coil into the cylinder without exerting undue pressure. PAGE TWENTY

Step 1 Using the template provided, mark vertically the position of the coil ends on the cylinder wall and punch the centres. Around the top circle A, and using the same centre, mark a second circle 70mm (23⁄4") in diameter (using the outer copper washer as a guide) to ensure correct final alignment of the Sidewinder when fitting. Drill the hole 54mm (21⁄8") diameter. Drill the lower hole B, 27mm (11⁄16") diameter. Smooth the edges of both holes before feeding in the sidewinder.

Step 2 Insert one end of coil into cylinder through top hole, having first secured a fibre washer to the threaded end with jointing paste. Slowly wind the coil into the cylinder without forcing.

Sidewinder conversion coil Supporting the coil, through hole A, with the piece of plastic tube supplied manoeuvre the bottom connection through hole B, and fit another fibre washer and a back nut to the bottom connection and loosely tighten. Step 3 Supporting the coil with the piece of plastic tube in hole A, manoeuvre the bottom connection through the lower hole, and fit another fibre washer and a back nut and loosely tighten.

Pass one of the fibre washers and the notched sealing plate over the plastic tube, and by rotating, guide them into the cylinder and on to the threaded end of the coil. Draw the threaded end of the coil through hole A and still holding the plastic tube, fit the rubber washer, outer copper washer, a fibre washer and back nut (PTFE tape complying with BS 6974 and satisfying the requirements of BS 6920 Part 1 should be applied to threads prior to fitting the backnut to ensure that the connection is water-tight). Tighten up both upper and lower backnuts with the aid of a spanner and finally withdraw the plastic tube. Do not over tighten and do not trim the rubber washer or allow it to come into contact with any sealant.

Volume of water heated from 10°C to 60°C per hour in a natural (gravity) circulation system utilising 22mm diameter pipework

Heat output when secondary water temperature is 10°C in a system with pumped primary circuits

Standards and approvals a Fibre washers b Notched sealing plate c Rubber washer d Outer copper washer Step 4 Pass one of the fibre washers and the notched sealing plate over the plastic tube, and by rotating, guide them into the cylinder and on to the threaded connector. Draw the threaded end of the coil through the top hole A and still holding the fixing tool, fit the rubber washer, outer copper washer, fibre washer and backnut (PTFE tape complying to BS 6974 and satisfying the requirements of BS 6920 Part 1 should be applied to threads prior to fitting the backnut to ensure that the connection is watertight).

The copper tube used in the manufacture of the Sidewinder is to EN 1057. The external BSP threads of connectors and backnuts are machined to BS 2779/ISO 228/1. Sidewinder is British Gas accepted.

Working temperatures and pressures Sidewinder conversion coils are suitable for use with pumped primaries at a maximum of 98°C and 6 bar.

Performance data Sidewinder conversion coils will provide domestic hot water as follows: Volume of stored water heated from 10°C to 60°C per hour in a natural (gravity) circulation system utilising 28mm diameter pipework

Step 5 Tighten up both upper and lower backnuts with the aid of a spanner and finally withdraw the plastic tube. Do not over tighten and do not trim the rubber washer or allow it to come into contact with any sealant.

Helpful specification clauses

*Maximum hot water temperature achieved is 57°C

PAGE TWENTY ONE

To ensure the right product for the job the correct terminology to use in your specification is “All cylinder conversion coils shall be Sidewinders, drawn from the Yorkshire heating components range as supplied by IMI Yorkshire Fittings Limited”.

Micraversion heating element he Yorkshire Micraversion heating element is a tubular copper heat exchanger, designed for the easy and economic conversion of copper direct hot water cylinders to indirect use. It will enable the converted cylinder to function as a purpose made unit and will operate on pumped primaries wherever combined central heating and domestic water services are required.

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Performance data

Installation

Micraversion will provide domestic hot water as shown if the primary water temperature is 85°C.

Step 1 Drain the cylinder sufficiently to avoid any spillage of water when the immersion heater or blanking plug is removed from the cylinder boss.

Maximum temperature of water heated in a 120 litre uninsulated cylinder by HE670

Copper and copper alloys are used in the manufacture of the Micraversion. The manifold is a gunmetal casting and all brass components that come in contact with water are dezincification resistant. Two patterns of Micraversion heating element are available. The HE670 is for top fitting applications and the HE400 generally for side fitting situations. In the latter case, one or two elements may be installed. It is important to check the dimensions of the cylinder before installation.

Average temperature of water heated in a 120 litre cylinder by HE670

Where to use Micraversion The units are primarily intended for use in standard 900 x 450mm direct copper cylinders with a capacity of approximately 120 litres. If a Micraversion is to be installed in a none standard cylinder the following dimensions should be adhered to: Fitted as a top entry conversion element the HE670 requires a cylinder height of at least 900mm; Fitted as a side entry conversion element the HE400 the cylinder diameter must be at least 450mm.

Maximum temperature of water heated in a 120 litre uninsulated cylinder by a top fitted HE400 Top fitted elements will only heat water in the upper part of the cylinder.

The Micraversion can be used in most types of heating installations, small bore or minibore, pressurised or non-pressurised. It is also suitable for industrial and commercial applications, where low output heat exchangers are required such as vats or tanks.

Step 2 Carefully fit the Micraversion to the immersion heater boss at the top of the cylinder. Or, in the case of a combination unit, to the boss at the bottom of the cylinder. Check that the jointing face of the cylinder boss is clean and undamaged. Fit the element with the washer provided, ensuring the washer is central before tightening. Step 3 Tighten the element to the cylinder using a spanner on the manifold flange only. Do not attempt to tighten the element on the copper outlet tubes or brass fittings. The joints in this manifold are factory sealed and should not be disturbed.

Temperature of water heated in a 120 litre uninsulated cylinder by a bottom fitted HE400 Bottom fitted elements give an even temperature throughout the cylinder.

PAGE TWENTY TWO

Step 4 The outlets may be joined to the connecting pipework with Yorkshire, Kuterlite or Tectite fittings. However, for ease of servicing, we recommend the use of Tectite or Kuterlite. Tubes may be shortened if required to within 50mm of the manifold nuts. The flow connection is clearly marked on the manifold (with the letter ‘F’) and the inlet pipework should be connected accordingly. If the element is installed with the connection reversed, it will

Micraversion heating element still operate satisfactorily but at a slightly reduced output. The connecting tubes in the 400mm element, installed horizontally, may be connected to either the flow or return.

Types and sizes

Step 5 Finally fit an air vent to the pipework as close as possible to the return connection. The vent should be positioned so that air can be released from the heater. The Yorkshire 15mm YP35 is a convenient way of achieving this. Alternatively use a YP24 with an RV35 air vent inserted in the branch.

Working temperatures and pressures

Size

HE 400

HE 670

Overall length

570mm

340mm

Length in cylinder

400mm

670mm

Cylinder connection

21⁄4" BSP

21⁄4" BSP

Primary connecting tubes

15mm

15mm

Surface area (heating)

0.11m2

0.19m2

Micraversion heating elements are suitable for use up to a maximum working pressure of 6 bar at 110°C.

Connecting up Flow and return connections to the element may be made with 15mm Yorkshire, Kuterlite or Tectite fittings. Brazed joints are not recommended for this application.

Helpful specification clauses

Standards and approvals Each Micraversion heating element is individually tested during manufacture.

To ensure the right product for the job the correct terminology to use in your specification is “All heating elements will be Micraversion drawn from the Yorkshire heating components range as supplied by IMI Yorkshire Fittings Limited”.

Manifolds orkshire manifolds enable the main flow and return in a heating system to be divided into smaller radiator circuits giving improved system control, a simple system layout and keep circuit resistance low. Unlike more complicated systems, Yorkshire manifolds are supplied as small basic units, which can be coupled together for larger systems. Alternatively the heating system can be zoned with a set of manifolds serving each sector.

Y Flexibility Linear flow, side entry and Micrafold manifolds give the installer total flexibility when installing central heating systems.

radiator pipework by means of the Yorkshire Potable capillary fittings provided. Connection to the main distribution pipework is by means of a Yorkshire joint in the brass header. Side entry manifolds have an integral solder ring socket at one end, a male capillary end at the other and compression outlets. This type of manifold allows installers to bank together any combination of units as required. The Micrafold is also a side entry manifold but incorporates a divider thereby giving flow and return in one component.

Size range Manifolds are available in 22mm and 28mm sizes with 8mm and 10mm outlets.

Working pressures and temperatures Yorkshire manifolds have a maximum working pressure of 6 bar at 110°C.

Standards and approvals

Where to use Yorkshire manifolds There are three basic designs of manifold; Linear flow manifolds have soft copper tube outlets in 8mm or 10mm – silver brazed into a brass header. The result is a straight through manifold with low flow resistance. The copper outlet tubes can be readily formed to the desired layout and connected to the

PAGE TWENTY THREE

Yorkshire manifolds are manufactured to IMI Yorkshire Fittings’ own exacting internal quality standards.

Helpful specification clauses To ensure the right product for the job the correct terminology to use in your specification is “Yorkshire manifolds shall be drawn from the Yorkshire heating components range as supplied by IMI Yorkshire Fittings Limited”.

Yorkshire accessories o complete the Yorkshire range an extensive selection of sundries and accessories is available providing the installer with the additional items required to use Yorkshire Potable fittings most effectively. The most essential items are traditional craftsman’s flux, Yorkshire flux, Yorkshire cleaning pads, steel wool and Yorkshire heat resistant mats.

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Also included in this section are pipe clips, brackets, pipe joist clips, re-rounding tools and minibore tube straighteners and benders, as well as replacement and ancillary items for valves and heating components. For full details on the complete range of Yorkshire accessories consult IMI Yorkshire Fittings’ fittings catalogue.

Fluxes

T Further information Yorkshire flux and Traditional Craftsman’s flux are subject to CHIP (Chemicals hazard information and packing regulations). Health and safety leaflets on these products can be obtained from our technical sales department.

he Yorkshire accessories range includes two specially developed fluxes – traditional craftsman’s flux and Yorkshire flux.

Extensive work has been carried out by the industry with the objective of defining the desirable characteristics of plumbing products including soldering fluxes. It is now a Water Byelaws requirement that soldering fluxes must not support microbiological growth in potable water supplies. In addition, any residue left in the pipework after soldering should be non-corrosive and have negligible toxicity. The primary function of a soldering flux is to prevent oxidisation of the copper tube during soldering. This allows the molten solder to ‘wet’ the parent metals, creating a true metallurgical bond. An efficient flux also ensures that the maximum strength of the joint can be achieved by aiding the distribution of the solder over the whole jointing surface.

Advantages of traditional craftsman’s flux and Yorkshire flux Traditional craftsman’s flux and Yorkshire flux are easy to use. Both fluxes will maintain their consistency over a prolonged period of time, providing container lids are always firmly replaced after use. Care should be taken not to introduce any contaminants which may be transferred to the joint. Traditional craftsman’s flux has excellent lubricating properties enabling close fitting joints to be readily assembled. This flux is also recommended for use with larger sized fittings. During normal heating at soft soldering temperatures (approximately 250˚C) the fluxes are char resistant. They can therefore be used with all types and sizes of soft solder fittings.

PAGE TWENTY FOUR

How to use traditional craftsman’s and Yorkshire flux Before applying the flux, ensure that the outside of the tube and the inside of the fitting have been thoroughly cleaned. Then apply adequate, but not excessive flux to the jointing surfaces with a brush. Do not use the finger. The joint can now be assembled and all excess flux wiped off the outside. After heating allow the assembly to cool and then thoroughly flush the system, preferably with hot water. Best results are obtained when joints are heated as soon as possible after assembly. Any joints not heated during the working day should be dismantled, cleaned and refluxed prior to reassembly. External residues can be removed with a damp cloth. If this is neglected staining of the pipework may occur.

Precautions Ensure adequate ventilation during heating. For more information refer to health and safety leaflets and warnings on packaging.

Cleaning pads and steel wool orkshire cleaning pads are specially produced from a highly abrasive synthetic material for the effective cleaning of tube ends and fitting sockets prior to fluxing. The pad is not electrically conductive and can be easily washed out with water and reused should the material become clogged.

Effective jointing A perfect Yorkshire joint can only be achieved if the fitting socket and the outside of the tube end are perfectly clean. Yorkshire cleaning pads and steel wool provide the easiest way to achieve the required standard of cleanliness.

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Steel wool, a more traditional material used for cleaning tubes and fittings is available in bundles or pad form.

Heat resistant mats eat resistant mats are produced from woven ceramic fibres affording skirtings, paintwork or potentially flammable materials protection, when heating Yorkshire Potable joints.

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Yorkshire heat resistant mats can be used to ensure that floors are protected from solder splashes and hot flux. They are useful for conserving heat in difficult situations. Asbestos free, the mats are available in two qualities and are supplied in handy ‘clip-close’ polythene carrier bags.

Heat resistant mats Mats will give protection from the heat of a blow lamp to floor boards, skirting boards and decorations.

Pipe clips and brackets comprehensive selection of pipe clips, stems and brackets for fixing copper pipe to a variety of surfaces is available from the Yorkshire accessories range.

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Saddle bands, single and two piece spacing clips and pipe brackets are suitable for mounting copper pipe, both horizontally or vertically. Where tubing needs to be mounted away from a surface, for example, where the tube needs to be insulated against heat or frost, Yorkshire pipe rings, used in conjunction with stems and brackets are an ideal solution.

An important consideration Correct clipping is essential to ensure that pipework systems are neat and operate quietly and safely.

Special two part pipe joist clips are also available which reduce the effects of vibration from pumps and other components in the system and help maintain joist strength if fitted using the purpose designed template which prevents excessive or inaccurate saw cuts.

PAGE TWENTY FIVE

Yorkshire valves ecause different service environments place different demands on pipeline systems, manufacturers of plumbing and heating components must offer specifiers and installers comprehensive pipeline solutions supplying the products needed to control and regulate the flow of liquids and gases and construct effective plumbing and heating systems.

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With this in mind, IMI Yorkshire Fittings has developed a comprehensive selection of valves

to suit both domestic and industrial requirements, from central heating and hot and cold water services to oil lines, steam and gas installations . Yorkshire valves are assembled using exactly the same jointing procedure as Yorkshire integral solder ring fittings. The Yorkshire valves range comprises stopvalves, gate valves, plugcocks and in addition the Aquadapt, a water meter adaptor.

Yorkshire gate valves orkshire gate valves are available in wheelhead or lockshield. Both patterns are manufactured from gunmetal and incorporate high quality Viton ‘O’ rings, able to withstand the effects of harsh service conditions.

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Where to use Yorkshire gate valves The sealing mechanism of the Yorkshire gate valve relies on a close fitting, precision made wedge positioned at a right angles to the direction of flow thus enabling the easy regulation of hot or cold water services with minimal flow restriction. Yorkshire gate valves are designed for connecting to EN 1057 copper tube in hot and cold water services, central heating systems, oil lines, gas, compressed air, steam installations and other engineering services.

Gate valve In Yorkshire gate valves the primary sealing surfaces are in gunmetal. Flow is controlled by screwing the gate into the valve body.

Size range Yorkshire gate valves are manufactured from corrosion resistant materials including gunmetal and are available in sizes from 15mm to 54mm.

Working pressures and temperatures The recommended maximum working pressure and temperature limits for Yorkshire gate valves used in hot and cold water services are shown in the chart below.

Non restrictive When the valve is fully open the gate moves up into the headwork to leave the flow unhindered.

Size All sizes

Gate valve working pressures 20°C

110°C

16 bar

6 bar

Standards and approvals Yorkshire gate valves are manufactured to BS 5154.

Helpful specification clauses To ensure the right product for the job, the correct terminology to use in your specification is: “All gate valves shall be gunmetal, conform to BS 5154 and be drawn from the Yorkshire valves range as supplied by IMI Yorkshire Fittings Limited.”

Full bore valve When fully open, a gate valve creates minimal restriction to flow.

PAGE TWENTY SIX

Yorkshire stopvalves he Yorkshire valves range includes a comprehensive selection of stopvalves suitable for use with soft, half-hard and hard copper tube. In addition to standard patterns, stopvalves with combined draincocks and alternative headworks, including lockshield and easy clean covers, are also available.

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Yorkshire stopvalves are suitable for use with copper tube to EN 1057. All have gunmetal bodies with gunmetal, DZR or duplex brass headworks.

and draining tap enables easy isolation with a draining facility. Yorkshire stopvalves are also available with union ends allowing easy removal of the valve without the need to disturb fixed pipework. Ensure that a stopvalve appropriate to service requirements i.e. above ground or below ground use is selected.

Size range Yorkshire stopvalves are available in sizes ranging from 15mm to 54mm.

Working pressures and temperatures Yorkshire stopvalves are suitable for use at the following working temperature and pressure. Size 15mm to 54mm

Temperature not exceeding

Working pressure

30˚C

16 bar

Safety first Traditionally, the first valve in every dwelling is a stopvalve, which allows the supply to be cut off rapidly in an emergency or for servicing of other fittings.

Standards and approvals Stopvalves are manufactured to BS 1010 requirements with ends to BS 864 Part 2 (pr EN 1254 Part 1).

Where to use Yorkshire stopvalves Stopvalves are designed for use wherever the flow of hot or cold water services need to be controlled or regulated. Lockshield stopvalves can be used where operational access needs to be restricted, for instance on exposed pipe runs. Stopvalves with easy clean covers should be specified for installations where the stopvalve is highly visible, particularly where hygiene is important. The combined stopvalve

Draining taps are manufactured to BS 2879 Type 1 and Type 2. All Yorkshire stopvalves are UKWFBS listed.

Helpful Specification Clauses To ensure the right product for the job, the correct terminology to use in your specification is: “All stopvalves shall conform to BS 1010 and shall be drawn from the Yorkshire valves range as supplied by IMI Yorkshire Fittings Limited.”

High performance valves The stopvalve design incorporates a rubber washer that is screwed down onto a gunmetal seat to provide a seal against mains pressure water.

Pressure drop for cold water flowing through stopvalves

Lockshield stopvalve In installations where continuous flow is a necessity lockshield stopvalves should be fitted. When the valve has been set using a special key, the tamperproof headwork prevents unauthorised adjustment.

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Aquadapt adaptor for water meters Installation The Aquadapt may be mounted either vertically or horizontally.

he Aquadapt replaces the headwork of a stopvalve with a combined shut-off valve, check valve and water meter connector, enabling the easy installation of water meters in existing dwellings without the need to cut into pipework.

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With Aquadapt, all the installer has to do is remove the headwork of the existing incoming stopvalve, screw the Aquadapt into place, then attach the meter.

Vertical installation

The Aquadapt is manufactured from gunmetal or DZR brass with some stainless steel and non-metallic components. Aquadapt is UKWFBS listed.

Where to use Aquadapt

Horizontal mounting If the Aquadapt is to be mounted horizontally a Yorkshire support bracket (Cat No AD37) should be used to provide additional support for the Aquadapt and adjoining pipework.

The Yorkshire Aquadapt is suitable for both existing and new properties. It can be used above or below ground and is available in sizes which will suit all commonly available stopvalves conforming to BS 1010 Part 2 and BS 5433. Aquadapt will accept the following concentric meters: Schlumberger P40M, Socam 501 l-M and Kent MSM If the meter you wish to install is not listed above, please contact your nearest IMI Yorkshire Fittings sales office for confirmation of suitability.

4. Ensure that the injector tube is fitted to the body and that the rubber sealing ring on the spigot has not been dislodged. Carefully screw the adaptor into the stopvalve body by hand, then tighten until the gap between the adaptor and the top of the stopvalve has closed. Do not over tighten. In the case of underground installations, the Yorkshire ‘T’ bar assembly spanner (Cat No AD30) should be used. For above ground installations, a 1⁄2" socket assembly spanner (Cat No AD31) should be used with a ratchet drive to tighten the Aquadapt. 5. Ensure that the valve handle is turned to the off position before turning the mains back on. Check for leaks. Do not turn the valve on at this stage 6. Screw the concentric meter into the top of the adaptor, hand tight. Ensure that the ‘O’ rings on the meter are still in place. 7. If a metering facility is not required immediately, the Aquadapt can be blanked off using a Yorkshire blanking plug (cat No AD34). 8. The valve can now be turned on. If water is not being drawn from the system, the meter pointer should be stationary. 9. Turn on a tap to check the meter is working correctly.

Removal and refitting

Installation 1. Isolate the main supplying the stopvalve which is to be adapted. 2. Remove headwork from the stopvalve. Have a container handy in case a small amount of water escapes from the pipework. 3. Note whether a fibre washer or ‘O’ring seal has been used to make the headwork or body seal. Select the same type of seal from the kit supplied with Aquadapt. Place the new seal over the threaded portion of the Aquadapt body.

Underground installation If the Aquadapt is to be installed externally, it should be fitted within the boundary box, the minimum size of which must be 105mm (6") in diameter. In this situation, we recommend that the Aquadapt is fitted with a Yorkshire extension handle (cat No AD35) to ensure easy access and use.

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If at any time there is a need to remove the meter, the valve should simply be shut off and the meter unscrewed. Water should only be lost from the meter itself when this procedure is carried out. If required, the adaptor can be removed and replaced into the same stopvalve body without problems. If there is a need to fit the adaptor to a different stopvalve, a new injector tube should be used. Simply pull out the existing tube and replace with a new one (1⁄2" cat No AD32, 3⁄4" cat No AD33).

Aquadapt adaptor for water meters Working pressures and temperatures

Dimensions

Aquadapt has a maximum working pressure of 16 bar at 25˚C.

Flow chart for Aquadapt installed in stopvalve body

Size 1

⁄2"

A B C D

Helpful specification clauses To ensure the right product for the job, the correct terminology to use in your specification is: “Water meter stopvalve adaptors shall be Aquadapt, and be drawn from the Yorkshire valves range as supplied by IMI Yorkshire Fittings Limited.

3

⁄4"

153mm 162mm 117mm 124.5mm 62mm A/F 62mm A/F 60mm 60mm

Yorkshire plugcocks he Yorkshire valves range includes a selection of DZR quality plugcocks for use with copper tube. Several patterns of plugcock are available, the majority have an oblong bore and are designed for use on low pressure gas services with the remainder having a full round bore intended primarily for use with low pressure water.

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Working pressures and temperatures Plugcocks are designed for low pressure installations and are suitable for use at the following working pressures and temperatures.

Size All sizes

Where to use Yorkshire plugcocks Yorkshire plugcocks are designed to control the flow of gas or water in low pressure installations. Gas plugcocks are available with union outlet and a drophead allowing the profile of the valve to be lowered once commissioned. The full round bore valve can also be supplied with a male BSP end.

Size range Yorkshire plugcocks are available in 15mm and 22mm sizes. Plugcocks with male BSP connections have 1⁄2" or 3⁄4" outlets.

Plugcock working pressures Gas*

Water

350 mbar

0.3 bar at 20°C

A useful design feature The quarter turn action of Yorkshire plugcocks provides an instant on/off indication.

*For use with gas families 1 and 2 only

Standards and approvals Yorkshire plugcocks meet the requirements of BS 1552 for use with first and second family gases.

Helpful specification clauses To ensure the right product for the job, the correct terminology to use in your specification is: “All plugcocks shall conform to BS 1552 and be drawn from the Yorkshire valves range as supplied by IMI Yorkshire Fittings Limited.

PAGE TWENTY NINE

Range A wide variety of patterns gives the installer the flexibility to choose the correct valve for the job.

Committed to customer service.... MI Yorkshire Fittings Limited is committed to maintaining its position as one of Europe’s leading manufacturers of fittings and valves for the plumbing and heating industry. We aim to offer all our customers high quality, cost effective and durable products – an aim which springs from the philosophy that the customer comes first in everything we do.

I Contacts Friendly and well informed internal sales staff process orders and enquiries quickly and efficiently.

Representatives Our external sales teams provide a personal contact for each customer. Representatives receive thorough product training and are able to deal with all queries promptly.

IMI Yorkshire Fittings has a network of sales offices throughout the UK, staffed by efficient and knowledgeable personnel. They will be happy to supply product information and answer any queries you may have. The introduction of a new computer system means that we can now respond even faster to customer orders and enquiries, using up to the minute communication techniques, such as document imaging and desktop fax modems. Which also means that our ability to track individual orders through the system, from receipt to despatch, is further improved. Our internal customer service is reinforced by experienced external sales teams who can offer specific technical advice and support. Because we recognise that different customers have very different needs and requirements of our sales representatives, we have developed two distinct sales teams. Our general sales representatives provide merchants and installers with detailed product information

and sales support and provide a constant point of contact with the company. The contract sales force has been specifically developed to offer support to specifiers, housebuilders and contractors – from technical advice on plumbing and heating system design to assisting with the production of specification documents. And if you’re an installer, merchant or contractor with a technical query about any of our products, simply phone our technical services department. They will be able to answer your questions on anything from building-in dimensions to correct jointing procedures.

Information For further details, please contact your regional sales office or, for general enquiries, head office.

Head office PO Box 166, Leeds LS1 1RD Telephone (0113) 270 1104 (0113) 271 5275 Fax

Export sales PO Box 166, Leeds LS1 1RD Telephone 44 (0) 113 270 1104 Fax 44 (0) 113 271 6250

IMI Yorkshire Fittings’ manufacturing sites, distribution depots and sales offices North PO Box 166, Leeds LS1 1RD Telephone (0113) 270 6945 (0113) 270 5644 Fax

South Effective distribution network Stock is held at our distribution depots at Leeds, Wallingford, Belfast and Glasgow.

Unit 8 Beadle Way Hithercroft Industrial Estate Wallingford OX10 9EZ. Telephone (01491) 825 065 (01491) 825 182 Fax

Key

• •

Sales office and distribution depot

Scotland

Manufacturing plant

Telephone (0141) 429 5721 (0141) 429 8219 Fax

14 Lambhill Quadrant, Glasgow G41 1SB

Northern Ireland Lislea Drive (Lisburn Road), Belfast BT9 7JG Telephone (01232) 667 631 (01232) 664 563 Fax

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....across Europe he growth in our European interests in recent years has been significant. In addition to our manufacturing facilities and sales and distribution offices in the UK, we now have manufacturing sites in ÜbachPalenberg, Germany; Orléans, France and more recently Budapest, Hungary. Add to that sales and distribution operations across Europe – from Warsaw to Barcelona – and it’s evident that IMI Yorkshire Fittings is one of Europe’s leading suppliers of fittings and valves.

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France Raccord Orléanais 1 Rue Jacques Dufrasne Zone Industrielle des Forges 45380 La Chapelle Saint-Mesmin France Telephone 00 02 33 38 88 08 86 Fax 00 02 33 38 72 54 77

Germany R. Woeste & Co. ‘Yorkshire’ GmbH Max-Planck-Straße 15 C 40699 Erkrath Germany Telephone 00 49 211 25 02 0 Fax 00 49 211 25 02 200

Spain IMI Woeste, S.L. C/Industria, 385-397 08918 Badalona (Barcelona) Spain Telephone 00 34 3460 29 69 Fax 00 34 3460 22 57

Poland IMI Instalacje Sp. z o.o. 02 – 285 Warszawa, ul Szyszkowa 35/37 Poland Telephone 00 48 22 668 2733 Fax 00 48 22 668 2734

Hungary IMI Épületgépész Kft. Budapest Maglódi Út 16 H– 1106 Hungary

R. Woeste & Co. ‘Yorkshire’ GmbH Woeste has enormous manufacturing capacity at its site in Übach-Palenberg, Germany and has a network of sales offices and distribution depots right across mainland Europe.

Telephone 00 36 1260 7880 Fax 00 36 1260 3272

Belgium Eclipse n.v. Prins Boudewijnlaan 9 Unit 6 B-2550 Kontich Belgium Telephone 00 32 3458 3890 Fax 00 32 3458 3531

Italy

Raccord Orléanais Manufacturing in France is carried out by Raccord Orléanais who also distribute through outlets in several other European countries.

IMI Componenti Termoidrosanitari s.r.l. Via E. Mattei, 9 22070 Bregnano (Como) Italy Telephone 00 39 3172 2811 Fax 00 39 3172 2383 European manufacturing sites, sales offices and distribution depots are shown on the map below.

PAGE THIRTY ONE

IMI Épületgépész Kft. With a new factory in Budapest, IMI Épületgépész is well placed to penetrate growing Eastern European markets.

IMI Yorkshire Fittings Limited • Registered in England No 401507 • Haigh Park Road Stourton Leeds. Telephone 0113 270 1104.