DONJOY Sanitary Pneumatic Three piece Ball Valve

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 …

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