Lennox 63W57 Pressure Switch Els PW 17895 093" male pin connection and

093" male pin connection and includes all necessary hardware for universal mounting applications

It is standard industry practice to replace the sleeve when the differential pressure reaches 10 psi (0

Featuring a 3/4" FNPT inlet and a 3/4" MNPT union tailpiece

this single-pole thermal breaker serves as a critical safety component

This assembly is designed for drop-in compatibility with Powers ETV400-10 and ETV400-15 series electronically tempered valves

Lennox 63W57 Pressure Switch Els PW 17895 093" male pin connection andThe Lennox 63W57 Pressure Switch is a critical genuine OEM component engineered for precise furnace diagnostic monitoring. This SPST furnace pressure switch is factory calibrated with a 0. 55 . 95" WC pressure rating, ensuring the inducer motor provides sufficient draft for safe combustion. As a direct replacement for Lennox 56M22, the 63W57 eliminates compatibility guesswork during emergency service calls. It functions as a safety interlock,