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ecobee 4 Pro

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)

Equipment Part List

‡Ductless Stock Up and Save offer valid thru May 31, 2019 at participating CE locations. Account must be active and in good standing condition to qualify for terms. Excludes special pricing and all accessories. Special quotes, OEM parts & job pricing excluded. Not valid on previous purchases. Offer cannot be combined with other offers or programs. Management reserves the right to modify or end this promotion at any time without notice. Orders must be placed and taken delivery by May 31, 2019.
Ductless Stock Up and Save