P&ID Symbols

Below are common symbols normally used in a P&ID, according to ISO 10628 and ISO 14617.

Symbols of Instruments used in P&ID
Pipe.svg
Pipe
Insulated pipe.svg
Thermally insulated pipe
Jacketed pipe.svg
Jacketed pipe
Cooled or heated pipe.svg
Cooled or heated pipe
Autoclave.svg
Jacketed mixing vessel (autoclave)
Half pipe reactor.svg
Half pipe mixing vessel
Pressurized vessel horizontal.svg
Pressurized horizontal vessel
Pressurized vessel vertical.svg
Pressurized vertical vessel
Pump.svg
Pump
Vacuum Pump or Compressor.svg
Vacuum pump or compressor
Bag.svg
Bag
Gas bottle.svg
Gas bottle
Fan.svg
Fan
Axial fan.svg
Axial fan
Radial fan.svg
Radial fan
Dryer.svg
Dryer
Fluid contacting column.svg
Packed column
Tray column.svg
Tray column
Furnace.svg
Furnace
Cooling tower.svg
Cooling tower
Heat exchanger no cross.svg
Heat exchanger
Heat exchanger with cross.svg
Heat exchanger
Cooler-symbol.svg
Cooler
Plate heat exchanger.svg
Plate & frame heat exchanger
Double pipe heat exchanger.svg
Double pipe heat exchanger
Fixed straight tubes heat exchanger.svg
Fixed straight tubes heat exchanger
U shaped tubes heat exchanger.svg
U shaped tubes heat exchanger
Spiral heat exchanger symbol.svg
Spiral heat exchanger
Covered gas vent.svg
Covered gas vent
Curved gas vent.svg
Curved gas vent
Dust trap.svg
(Air) filter
Funnel.svg
Funnel
Steam trap.svg
Steam trap
Viewing glass.svg
Viewing glass
Pressure reducing valve.svg
Pressure reducing valve
Flexible pipe.svg
Flexible pipe
Valve.svg
Valve
Control valve.svg
Control valve
Manual valve.svg
Manual valve
Back draft damper.svg
Back draft damper
Needle valve.svg
Needle valve
Butterfly valve.svg
Butterfly valve
Diaphragm valve.svg
Diaphragm valve
Ball valve.svg
Ball valve