Description
The A.J. Antunes 803113801 High Gas Pressure Switch Open on High is a safety control unit used in gas‑fired appliances to monitor gas pressure and interrupt operation if pressure rises beyond safe limits in HVAC systems. It has double-pole, double-throw, and 5″–28″ WC, and it changes contact state when the measured pressure exceeds the set range, providing a reliable signal to control circuits. It is used in the gas supply line or regulator assembly of furnaces, boilers, or similar equipment. It works with thermostats, control boards, and safety interlocks to protect the system from overpressure conditions.
