Designed for pneumatic systems, Conoflow Series GVB Snap-Acting Relays change ports to switch or lock in secondary air source when the main supply pressure fails below a predetermined set point. In the event of supply or pilot pressure failure, the positive action relay with one common and two inlet or outlet ports will automatically:
Switch from main to auxiliary supply pressure
Lock an actuator in its last position
Extend or retract an actuator stem
Divert flow or pressure from one device to another