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

the S1-025-27792-708 offers a direct drop-in solution with standard spade terminal connections

Plug-and-Play Integration: Designed for rapid field installation during commercial or residential service calls

also frequently referred to as a personality plug

This genuine OEM furnace limit switch (model 140-40 S) is engineered for precise thermal monitoring in ICP

ASCO 8321G1 Valve 318973-401 The unit contains two separateThe 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