The Watts 1020107 Diaphragm is a critical replacement component engineered for high-precision fluid control within heavy-duty backflow preventer repair kits

providing a rigid mounting solution that prevents mechanical stress on the gas valve and burner assembly

this 24-inch thermocouple features a robust copper lead and a high-nickel alloy tip to withstand the constant thermal stress found in residential heating systems

maintaining the original equipment’s safety ratings and operational specifications

Lennox 18J37 Limit Switch The Watts 1020107 Diaphragm isThe Lennox 18J37 Limit Switch is a critical safety component engineered for high performance thermal regulation in residential and light industrial furnaces. As a normally closed disc style limit control, this genuine OEM Lennox replacement part is specifically designed to prevent heat exchanger damage by interrupting the burner circuit if internal temperatures exceed safety thresholds. Featuring a yellow color coded sleeve for rapid field