A.J. Antunes 8103116407 Pressure Switch Open/Low M/R 7-55" WC 1/4" NPT

The A.J. Antunes 8103116407 Pressure Switch Open/Low monitors gas pressure conditions and interrupts the control circuit when pressure falls outside the set range in HVAC systems. It operates within an adjustable range of 7 to 55 inches water column (WC) and features a 1/4 inch NPT connection, with manual reset operation and SPDT switching for controlled response. Installed in furnaces, boilers, and gas-fired equipment, it verifies proper gas pressure before allowing operation. As part of the safety control system, it helps maintain stable combustion and supports reliable performance.