Dungs Pressure Switches 266920 Gas Pressure Switch 1/4" NPT 0.4-4" WC

The Dungs Pressure Switches 266920 Gas Pressure Switch is an essential part of HVAC systems that measures and regulates the gas pressure with a range of 0.4-4” WC and has a 1/4” NPT port. It is a pressure differential and when the pressure drops and goes outside the set values, such as when towing, then it acts, such as; sounding a bell or turning off the gas supply to avoid bad occurrences. Found in gas-fired boilers, furnaces and other HVAC equipment, it provides safety against conditions such as incomplete combustion or gas leakage.