what is a normally close / normally open pneumatic valve
Pneumatically actuated valves such as butterfly valves or ball valves, the pneumatic actuator comes in a single action mode or double action mode. Single action mode has a normally close position or normally open position. Normally closed pneumatic valve means that when there is no air supply to the air actuator; the valve is in …
what is a normally close / normally open pneumatic valve Read More »