It is recommended to inspect the Buna-N valve pad for wear when replacing the orifice to ensure a positive dead-end lockup

this HVAC safety switch is calibrated to provide high-limit protection by breaking the electrical circuit to the gas valve or ignition control if internal temperatures exceed factory safety thresholds

as well as several Power-fit and Armor water heater series

as these can enlarge the #35 opening

Lennox 68J37 Contactor It is recommended to inspectThe Lennox 68J37 Contactor is a heavy duty 2 pole 35 amp electrical contactor engineered for consistent performance in residential and light commercial HVAC systems. This definite purpose contactor features a 24V coil and serves as a direct replacement for Lennox 68J3701 and 3100 20Q2208. Built to withstand the high inrush currents typical of AC compressor startup, its silver cadmium oxide contacts resist welding and pitting under thermal load. The