Pneumatic Directional Control Valve Symbols

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.

Pneumatic directional control valve symbols.

This means they have two flow pipe connections and can switch into two different positions. Symbols show the methods of actuation the number of positions the flow paths and the number of ports. Basic check valves allow fluid to flow in one direction but prevent fluid from flowing in the opposite direction. 2 2 way valve 2 connections 2 switching positions for 2 flow directions actuation by pressing spring return normally closed.

5 3 way single pilot pneumatic valve pneumatically actuated in both. 4 way 2 position direct solenoid operated spring return. Symbols identification and other circuit symbols. The top symbol shows a manually activated valve that is pushed over against a spring.

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. 5 way directional control valves figures 8 16 through 8 20 show symbols of some 5 way air valves. The valves shown are all two way two position directional valves.

Directional air control valves are the building blocks of pneumatic control. Here is a brief breakdown of how to read a symbol. Most spool type air valves come in a 5 way configuration.