Snap Acting Relay Working Principle
Snap-Acting Relay change ports to switch or lock in secondary air source when the main supply pressure fails below a predetermined
Snap-Acting Relay change ports to switch or lock in secondary air source when the main supply pressure fails below a predetermined
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