GVB/GVB12 Series Snap-Acting Relays

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

The Series GVB Snap-Acting Relays have an integral pilot which eliminates the extra piping and connections required with other lock-up valves. Compact and lightweight, the relays are easily piped and mounted.

Set Pressure: 25 to 85 psi (172 to 586 kPa)
Maximum Relay Valve Pressure: 150 psi (1034 kPa)
Maximum Signal Port Pressure: 100 psi (690 kPa)
Relay Valve Port Diameter: 3/16” (4.76 mm) (Cv=0.38)
Max Pilot Air Consumption: 3.1 scfh (1.5 lpm) when operating in “A” to “B” circuit mode.
Temperature Range: 0 to 150 °F (-18 to 66 °C)

Connections:

Sensing Port: 1/8” NPT
All Others:1/4” NPT
Weight:
GVB11: 1-3/4 lbs. (0.79 Kg)
GVB12: 2-3/4 lbs. (1.25 Kg)

NOTE: 1. Supply (Pilot) pressure must be at least 20% greater than set pressure

PILOT */**

Body and Bonnet: Aluminum
Inner Valve: Brass
Range Spring: Steel
Diaphragm: Buna “N”

VALVE */**

Body: Brass
Spool: 303 Stainless Steel
Diaphragm: Buna “N”
Bottom Cap: Aluminum

*Stainless Steel Construction available, consult the factory.
**Viton and Silicone Elastomers available, consult the factory.