Dwyer Instruments 1996-20 Gas Pressure Switch 4"-20" WC

The Dwyer Instruments 1996-20 Gas Pressure Switch is a compact and affordable safety device designed for various HVAC systems like furnaces, boilers, and air conditioners. It functions as a guardian of your gas flow, ensuring it stays within safe limits. Imagine it as a tiny gatekeeper; it monitors the gas pressure using a sensitive diaphragm. If the pressure dips below or climbs above the preset range, the diaphragm triggers an internal switch. This flip throws the gatekeeper into action, either opening or closing an electrical circuit. In most cases, this circuit is connected to your gas valve, so the valve shuts down, preventing potential hazards like gas leaks, explosions, or equipment damage. With its visible setpoint indicator and clear on/off status, the 1996-20 switch also simplifies maintenance and troubleshooting for technicians.