How Diaphragm Valves Work ?
Diaphragm valves use a flexible sheet pressed close to the edge of a solid dam to narrow the flow path
diaphragm valve working
Different Types of Control Valve Actuators
Fail Open (Spring-to-Open, Air-to-Close) The actuator is spring-to-open, air-to-close type. Operation is via a normally closed 3 way, 2 position