The BETA Air Relay is a new, pilot-operated, snap action pneumatic switch. The switch features a patented, snap-action mechanism that does away with problems associated with throttling bands. Unlike otherpilot-operated vent valves, the Air Relay can be finetuned for accurate increasing or decreasing action. The switch features a narrow deadband, as low as 10 mbar, and supports pilot supply and signal pressures up to 7.0 bar. Designed for valve control, bleed-off shutdown, or alarm applications – both offshore and on – the relay can also be safely used in hazardous areas, including Zone 0 (no spark) applications. The switch is available in two configurations: TYPE SA for Normally Closed (N.C.) operation and TYPE SB for Normally Open (N.O.) operation.
Air Relay pressure switch
