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Backflow preventers prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are health or non-health hazards. To prevent contamination due to back pressure, many health regulatory regimes require an air gap or mechanical backflow prevention assembly between the delivery point of mains water and local storage or use. Where submerged mains inflow is permitted, a backflow prevention assembly is required, which protects the potable water system from contamination hazards. A check valve is a basic form of backflow prevention, but often more complex devices are required as check valves are not considered as reliable when compared to devices with redundancies and reduced pressure zones.
The BFP-90-1/2LF from Matco-Norca is a 1/2” FNPT Union Dual Check Backflow Preventer Valve w/ Atmosp..
$ 43.55
Lead Free Check Valve 700XL Zurn (Wilkins) 1' FNPT x Union FNPT Dual Check Valve. Ideal for use wher..
$ 67.95
The BFP-90-3/4LF from Matco-Norca is a 3/4” FNPT Union Dual Check Backflow Preventer Valve w/ Atmosp..
$ 43.55
The 34UFX34F-700XL from Zurn is a 3/4” FNPT x Union FNPT Dual Check Valve (Lead-Free). Designed for ..
$ 74.51
The 12UFX12F-700XL from Zurn is a 1/2” FNPT x Union FNPT Dual Check Valve (Lead-Free). Designed for ..
$ 69.32
The 12-760 from Zurn is a 1/2” Union FNPT Dual Check Backflow Preventer Valve w/ Atmospheric Vent. I..
$ 70.95
The BFP-90-1/2CLF from Matco-Norca is a 1/2” Union Sweat Dual Check Backflow Preventer Valve w/ Atmo..
$ 43.55
