Pneumatic Directional Control Valve Symbols

The top symbol shows a manually activated valve that is pushed over against a spring.

Pneumatic directional control valve symbols. Pneumatic circuit symbols representing these valves provide detailed information about the valve they represent. Because air usually exhausts to atmosphere the extra exhaust port is no problem. 5 way directional control valves figures 8 16 through 8 20 show symbols of some 5 way air valves. Directional air control valves are the building blocks of pneumatic control.

The double arrow in the left box shows that the flow may pass in both directions. 4 way 2 position direct solenoid operated spring return. As with all fluid power components directional control valves can be represented by standard symbols published in iso 1219. Perhaps the simplest of all directional control valves is the check valve a specific type of binary valve.

This means they have two flow pipe connections and can switch into two different positions. 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. 2 2 way valve 2 connections 2 switching positions for 2 flow directions actuation by pressing spring return normally closed. Most spool type air valves come in a 5 way configuration.

5 3 way single pilot pneumatic valve pneumatically actuated in both. Symbols identification and other circuit symbols. Symbols show the methods of actuation the number of positions the flow paths and the number of ports.