Industrial-Grade Construction: High-alloy metal sensor rod resists carbon buildup and thermal degradation

this unit features a 7/8-inch suction line and a 1/2-inch discharge for standard line set brazing

The unit contains two separate switches: one to interrupt the burner circuit in a low-water event and another that can trigger an external alarm or signal an automatic water feeder to replenish the boiler

providing a reliable seal that standard generic valves often fail to maintain over time

ASCO 8321G1 Valve 318973-401 Industrial-Grade Construction: High-alloy metal sensorThe ASCO 8321G1 Valve is a high performance 3 way normally closed solenoid valve engineered for rapid system response. This pilot operated quick exhaust valve features a 1 4" NPT connection and is designed to handle air, water, and light oil with a pressure range of 10 200 PSI. Built with a rugged brass body and durable NBR seals and discs, the 8321G1 ensures tight shutoff and reliable operation in demanding HVACR and industrial environments. The