Pneumatic Directional Control Valve Symbol

Here is a brief breakdown of how to read a symbol.

Pneumatic directional control valve symbol.

Pneumatic symbols directional control valves process valves description image description image 2 2 way valve air operated nc angle valve 2 way 2 2 way valve direct operated nc ball valve 2 way 2 2 way valve pilot operated nc ball valve 3 way l 3 2 way valve air operated nc ball valve 3 way t. Directional air control valves are the building blocks of pneumatic control. The top symbol shows a manually activated valve that is pushed over against a spring. Directional valves number of ports and positions the directional valves are described by the numbers of ports in the main valve excluding pilot ports and the number of positions the valve can take number of ports number of positons for example.

Symbols show the methods of actuation the number of positions the flow paths and the number of ports. This means they have two flow pipe connections and can switch into two different positions. 5 2 way single pilot pneumatic valve pneumatically actuated in one direction spring return. 2 squares 2 positons.

The iso symbol contains information concerning the stability of the positions and the reset. The valves shown are all two way two position directional valves. 3 2 way single pilot pneumatic valve pneumatically actuated in one direction spring return normally open. Symbols identification and other circuit symbols.

Complete directional valve symbols are created by combining the appropriate actuator and valve symbols found along the horizontal and vertical edges of the chart.