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verify shaft diameter and keyway dimensions before cross-referencing
High Discharge Capacity: Rated for 407 lbs/hr to safely handle rapid pressure spikes
ensuring the switch handles the demanding electrical loads of furnace control boards
By maintaining compressor oil viscosity in cold ambient conditions
Designed for 3/4-inch normally closed valves
Weil McLain 511-624-450 Switch Els PW 17895 verify shaft diameter and keywayThe Weil McLain 511 624 450 is a high precision differential pressure switch engineered specifically for CGi model boilers (sizes 25, 3, and 4) and certain HE II boiler applications. This OEM replacement part is factory calibrated to a 1. 18" WC nominal set point, ensuring critical safety monitoring of the exhaust vent and combustion air system. With an operational differential range of 0. 5 to 2. 0" WC, it effectively prevents the boiler burner from