Resideo FM911 Valve Els PW 17895 This is critical for synchronizing

This is critical for synchronizing the reversing valve

the 2721 series is a small-can design typically supplied without a primary wiring compartment

This model serves as the official OEM replacement for the discontinued 70-18625-03

Durable Sensing Bulb: Features a high-integrity 1/4" x 5

it can be used in any 5k Ohm thermistor circuit requiring a 4-inch probe

Resideo FM911 Valve Els PW 17895 This is critical for synchronizingThe Resideo FM911 (identical to the FM911 U) is a high performance boiler fill valve and backflow preventer combo engineered for precise hydronic heating system maintenance. This 1 2 inch assembly features a pressure regulating valve factory preset at 12 PSI, though it is field adjustable from 4 to 60 PSI to accommodate systems in buildings up to 12 stories. Designed specifically for expansion tank mounting, the unit utilizes a balanced seat piston