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Watts - 1/2" Combination Fill Valve and Backflow Preventer, Union Solder x NPT End Connections

Item: 911S
MFR: 0386461


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Product Info


Watts - This 1/2" combination fill valve and backflow preventer are used in commercial and residential hydronic heating systems to provide make-up water to the boiler, prevent backflow when supply pressure falls below system pressure and designed for use in the boiler feed lines of hydronic heating systems. This pre-assembled unit consists of a 1/2" brass backflow preventer with union solder x NPT end connections, model 9DS and a bronze feed water pressure regulator, mode 1156F. It has a high capacity fill valve that provides quick system filling and purging. The maximum working pressure rating is 100 PSI (6.9 BAR) at 212°F (100°C).
Warning: this product contains a chemical known to the State of California to cause cancer.


Weight3.35 Pounds (lbs)
Length5.25 Inches (In)
Width2.937 Inches (In)
Height8.75 Inches (In)
Country of OriginUSA
CompositionCast Iron
Connection Size1/2"
Connection TypeSocket
Prop 65Yes
Temperature Range33°F to 212°F (0.5°C to 100°C)

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