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 falls 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.
Specifications
-
- 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
GVB Snap Acting Relays