FM911

Honeywell FM911 1/2 Boiler Fill Valve and Backflow Preventer Combo

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FM911 1/2" Boiler Fill Valve and Backflow Preventer Combo Assembly. Pressure regulating valve for automatic control of boiler feed water and other pressure reducing applications. Especially constructed for expansion tank mounting. Replaces Watts 911, Caleffi 573002A & 573009A, Taco 3492-050-BC, 3492-050-BT & 3492-050-BH.