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It is primarily used in hydronic heating
This prevents standing water
The 20 mm diameter of the extension rod provides the necessary structural rigidity to prevent bowing or fatigue under high-torque applications
we recommend replacing the 40-micron polyethylene element to ensure original flow specifications
utilizing the same union connections and 1/2-inch sizing for direct replacement
Resideo FM911 Valve Els PW 17895 It is primarily used inThe 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
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