Flexible Installation: The Nichrome coil can be stretched from 27

For 12-inch diaphragm models like the 243-12

we recommend contacting our support team to verify the specific hardware included in the current manufacturer packaging

the 421-BT636 streamlines field repairs by matching the footprint and electrical specifications of legacy Beckett oil burner transformers

Installing a switch with a different thermal profile can lead to nuisance tripping or dangerous overheating

Lochinvar & A.O. Smith 100109259 Valve 318820-201 Flexible Installation: The Nichrome coilAs an HVAC industry standard, the Lochinvar & A. O. Smith 100109259 Valve is a critical safety component designed for high performance water heating systems. This 3 4" T&P Valve is engineered to protect residential and commercial boilers by managing both thermal expansion and internal pressure. With a factory set 150 PSI pressure relief and a 210F temperature relief threshold, this valve ensures fail safe operation when system variables exceed safe