Plumbing Symbols – Valves

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For reference purposes, here are some two dimensional plumbing symbols illustrating valves and mechanical devices. All drawn by me using paint.net. If there are any other symbols you would like to see just ask on the forum.

More types of plumbing symbols:

Plumbing and heating valve symbols

Gate valve symbol Gate valve spacer Isolating valve symbol Isolating valve spacer Globe valve symbol Globe valve spacer Ball valve symbol Ball valve
4 way valve 4 way valve spacer backflow preventer symbol Backflow preventer spacer Check valve symbol Check valve spacer Drain valve symbol Drain valve
Air separator symbol Air separator spacer 3 way mixing valve symbol 3 way mixing valve spacer Diverting 3 way valve symbol Diverting 3 way valve spacer flow check valve symbol Flow check valve
Manual air vent symbol Manual air vent spacer Motorized valve symbol Motorized valve spacer Pressure reducing valve symbol Pressure reducing valve spacer Pressure balancing bypass valve symbol Pressure balancing bypass valve
Pressure relief valve symbol Pressure relief valve spacer Spring loaded check valve symbol Spring loaded check valve spacer Motorized 3 way valve symbol Motorized 3 way valve spacer Motorized 4 way valve symbol Motorized 4 way valve
Thermostatic valve symbol Thermostatic valve spacer Thermostatic 3 way valve symbol Thermostatic 3 way valve spacer Circulator symbol Circulator spacer Circulator with isolating flanges symbol Circulator with isolating flanges
Expansion tank symbol Expansion tank spacer Floating air vent symbol Floating air vent spacer Pressure gauge symbol Pressure gauge spacer Temperature gauge symbol Temperature gauge
Thermo-pressure gauge symbol Thermo-pressure gauge spacer Post indicator valve symbol Post indicator valve spacer Float operated valve symbol Float operated valve symbol spacer 3 way plug valve symbol 3 way plug valve symbol
Diaphragm valve symbol Diaphragm valve symbol spacer Butterfly valve symbol Butterfly valve symbol spacer Powered valve symbol Powered valve symbol spacer Reducing valve symbol Reducing valve symbol
Needle valve symbol Needle valve symbol spacer Flanged valve symbol Flanged valve symbol spacer spacer

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