Backflow Preventers

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1UFX1F-700XL Zurn (Wilkins) 700XL - 1" FNPT x Union FNPT Dual Check Valve, Lead Free

Lead Free Check Valve 700XL Zurn (Wilkins) 1' FNPT x Union FNPT Dual Check Valve. Ideal for use wher..

$ 67.95

3/4” FNPT x Union FNPT Dual Check Valve (Lead-Free)

The 34UFX34F-700XL from Zurn is a 3/4” FNPT x Union FNPT Dual Check Valve (Lead-Free). Designed for ..

$ 61.95

9D-M2, 3/4" Dual Check Backflow Preventer Valve w/ Atmospheric Vent, FNPT Union x FNPT Union

9DM2 3/4" Dual Check w/ Atmospheric Vent (Brass)Size: 3/4"Connections: FNPT Union x FNPT UnionOperat..

$ 81.95

9D-M3, 1/2" Dual Check Backflow Preventer Valve w/ Atmospheric Vent, FNPT Union x FNPT Union

1/2" 9D-M3 Dual Check Valve w/ Intermediate Atmospheric VentSize: 1/2"Connections: FNPT Union x FNPT..

$ 81.95

B911-M3, 1/2" Boiler Fill (1156) & Backflow Preventer (9D) Valve Combination, FNPT x FNPT Union

B911, 1/2" Combo Fill Valve & Backflow Preventer (Threaded)Size: 1/2"Connections: FNPT x Sweat Union..

$ 168.95

BBFP, 1/2" Dual Check Backflow Preventer Valve w/ Atmospheric Vent, FNPT Union x FNPT Union

BBFP, 1/2" IPS Backflow PreventerSize: 1/2"Connections: FNPT Union x FNPT UnionOperating Temperature..

$ 57.95

BBFP, 3/4" Dual Check Backflow Preventer Valve w/ Atmospheric Vent, FNPT Union x FNPT Union

BBFP, 3/4" IPS Backflow PreventerSize: 3/4"Connections: FNPT Union x FNPT UnionOperating Temperature..

$ 58.95

BBFP-S, 1/2" Dual Check Backflow Preventer Valve w/ Atmospheric Vent, Sweat Union x FNPT Union

BBFP, 1/2" CxC Backflow PreventerSize: 1/2"Connections: FNPT Union x Sweat UnionOperating Temperatur..

$ 58.95

LF288A, 1/2" Anti-Siphon Vacuum Breaker, Lead Free

1/2 LF288A Anti Siphon Vacuum Breaker Lead Free Size: 1/2" Connections: Female NPT x Femal..

$ 29.95

LF288A, 3/4" Anti-Siphon Vacuum Breaker, Lead Free

3/4 LF288A Anti-Siphon Vacuum Breaker Lead Free Size: 3/4" Connections: Female NPT x Femal..

$ 40.95

LF7RU2-2, 1/2" Dual Check Valve, Lead Free

1/2" LF7U2-2 Dual Check Valve, Lead FreeSize: 1/2"Connections: Female NPT x Female NPT UnionOperatin..

$ 54.95

LF7RU2-2, 3/4" Dual Check Valve, Lead Free

3/4" LF7RU2-2 Lead Free Dual Check Valve Size: 3/4" Connections: Female NPT x Female NPT U..

$ 55.95

LFN36M1, 1/2" Vacuum Relief Valve, Lead-Free

1/2" LFN36M1 Lead Free Water Service Vacuum Relief ValveSize: 1/2"Connection: Male NPTVenting Capaci..

$ 22.95

LFN36M1, 3/4" Vacuum Relief Valve, Lead-Free

3/4" LFN36M1 Lead Free Water Service Vacuum Relief Valve Size: 3/4" Connection: Male NPT ..

$ 59.95

1/2” FNPT x Union FNPT Dual Check Valve (Lead-Free)

The 12UFX12F-700XL from Zurn is a 1/2” FNPT x Union FNPT Dual Check Valve (Lead-Free). Designed for ..

$ 51.95

1/2” Union FNPT Dual Check Backflow Preventer Valve w/ Atmospheric Vent

The 12-760 from Zurn is a 1/2” Union FNPT Dual Check Backflow Preventer Valve w/ Atmospheric Vent. I..

$ 70.95

Backflow Preventers

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.

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