Pneumatic Directional Control Valve Symbol

2 squares 2 positons.

Pneumatic directional control valve symbol.

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. Directional air control valves are the building blocks of pneumatic control. Pneumatic circuit symbols representing these valves provide detailed information about the valve they represent.

This means they have two flow pipe connections and can switch into two different positions. 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. The top symbol shows a manually activated valve that is pushed over against a spring. 3 2 way single pilot pneumatic valve pneumatically actuated in one direction spring return normally open.

Here is a brief breakdown of how to read a symbol. The double arrow in the left box shows that the flow may pass in both directions. 5 2 way single pilot pneumatic valve pneumatically actuated in one direction spring return. The valves shown are all two way two position directional valves.

Directional valves comprise the largest portion of any air logic circuit.