replacing a restricted valve with this genuine York S1-025-43225-000 ensures the system returns to its original factory-specified operating parameters without the reliability issues associated with universal aftermarket alternatives

and industrial drying ovens

and PY1REA series units

Passive Resistance Output: Two-wire passive temperature sensor design simplifies wiring to most standard controllers and BAS modules

a full head assembly or a complete replacement unit is required

Lochinvar & A.O. Smith 100110887 Switch L99H008 replacing a restricted valve withThe Lochinvar & A. O. Smith 100110887 Blocked Outlet Switch is a critical safety component engineered for BTH 400A Series 100 101 gas water heaters and compatible Lochinvar Knight boilers. This normally closed switch is calibrated to a 1. 39 inch water column, providing precise monitoring of the exhaust vent airflow. Designed to detect back pressure or obstructions in the flue, it serves as a fail safe by interrupting the 24V control circuit to the