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Lead Free Check Valve 700XL Zurn (Wilkins) 1' FNPT x Union FNPT Dual Check Valve. Ideal for use wher..
$ 67.95
The 34UFX34F-700XL from Zurn is a 3/4” FNPT x Union FNPT Dual Check Valve (Lead-Free). Designed for ..
$ 74.51
9DM2 3/4" Dual Check w/ Atmospheric Vent (Brass)Size: 3/4"Connections: FNPT Union x FNPT UnionOperat..
$ 127.49
1/2" 9D-M3 Dual Check Valve w/ Intermediate Atmospheric VentSize: 1/2"Connections: FNPT Union x FNPT..
$ 119.02
B911, 1/2" Combo Fill Valve & Backflow Preventer (Threaded)Size: 1/2"Connections: FNPT x Sweat Union..
$ 202.27
BBFP, 1/2" IPS Backflow PreventerSize: 1/2"Connections: FNPT Union x FNPT UnionOperating Temperature..
$ 106.45
BBFP, 3/4" IPS Backflow PreventerSize: 3/4"Connections: FNPT Union x FNPT UnionOperating Temperature..
$ 114.16
BBFP, 1/2" CxC Backflow PreventerSize: 1/2"Connections: FNPT Union x Sweat UnionOperating Temperatur..
$ 106.45
1/2 LF288A Anti Siphon Vacuum Breaker Lead FreeSize: 1/2" Connections: Female NPT x Femal..
$ 29.95
3/4 LF288A Anti-Siphon Vacuum Breaker Lead FreeSize: 3/4" Connections: Female NPT x Femal..
$ 142.87
1/2" LF7U2-2 Dual Check Valve, Lead FreeSize: 1/2"Connections: Female NPT x Female NPT UnionOperatin..
$ 67.20
3/4" LF7RU2-2 Lead Free Dual Check ValveSize: 3/4" Connections: Female NPT x Female NPT U..
$ 72.33
1/2" LFN36M1 Lead Free Water Service Vacuum Relief ValveSize: 1/2"Connection: Male NPTVenting Capaci..
$ 70.79
3/4" LFN36M1 Lead Free Water Service Vacuum Relief ValveSize: 3/4" Connection: Male NPT ..
$ 89.01
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
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.
