The ASCO K3A551V 3/4-inch Normally Closed Gas Shutoff Solenoid Valve is an electrically operated safety component designed to control gas flow in compatible heating systems. Operating on 24V power, it opens when energized and automatically closes when power is removed, providing dependable gas shutoff at pressures up to 3 PSI. This valve is suitable for gas furnaces, boilers, commerci... https://www.partshnc.com/k3a551v-asco-34-24v-nc-3-max-gas-vlv