Basic Symbols Hydraulic

Basic Symbols Line Continuous line (flow line) <> Long dashes (flow line) Short dashes (flow line) Double mechanical connections(shafts,levers,piston-rods) Long chain thin Enclosure for several components assembled in one unit.

Circle,semi-circle Circle As a rule, energy conversion units(pump, compressor, motor) Circle Measuring instruments Circle Non-return link, roller etc. Circle Mechanical link, roller etc. Circle Semi-rotary actuator Square, Rectangle

Squares As a rule, control valves (valve) except for non-return valves.

Diamond Diamond Conditioning apparatus(filter, separator, lubricator, heat exchanger) Controlled by solenoid and pilot directional valve pilot directional valve is actuated by solenoid Controlled by solenoid or pilot directional valve either may actuate the control independently