Watts 8 1/2 in x 5 1/4 in Boiler Feed Valve w/Backflow Preventer, FNPT and NPT Union - B911-M3 Nominal Size-32" X 1.5" The Guardian G1778 features the

The Guardian G1778 features the AutoFlow eye/facewash for easy mounting on the wall

and other applications requiring a hazardous location motor

Voltage: 115/200-240

this HAYWARD butterfly valve comes with a hydro-dynamic disc for Increased flow performance and high Cv

Watts 8 1/2 in x 5 1/4 in Boiler Feed Valve w/Backflow Preventer, FNPT and NPT Union - B911-M3 Nominal Size-32" X 1.5" The Guardian G1778 features theCombination backflow preventer and feed water pressure regulator in one pre assembled unit, this WATTS boiler feed valve with backflow preventer is for use in residential and commercial hydronic heating systems. Model provides make up water to the boiler and can prevent backflow when the supply pressure falls below the system pressure.