Hose Bib Vacuum Breakers Attached to sill cocks, valves, and hydrants with Male hose thread outlet. For indoor or outdoor use. Designed to prevent ...

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Brass Dual Check Valve/Backflow Prevention for Mains Irrigation Systems FF Use the Dual Check Valve for backflow prevention from your irrigation sy...

If a property’s drinking water supply is inadvertently connected with a source of pollution, either through a cross connection or simply a hose submerged in a container of liquid, then these pollutants could enter the water supply when there is an overpressure on the private property side or a sudden drop in water mains pressure.

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Backflow can also occur if a water pump, such as a bore pump, is cross connected to the internal water plumbing system, and is pumping bore water at a higher pressure than the water mains pressure (back pressure).

AVG 20mm Brass Press Fit Double Check Valve with Isolation Valve for Mains Water (Dual Check Valve Backflow Prevention)  DOWNLOAD PRODUCT BRO...

It occurs when the water delivery main is at a lower pressure than the internal plumbing system (back siphonage). Back siphonage can occur when there is a burst or ruptured water main, or due to excessive demand during fire-fighting operations or other periods of high demand.

Watts Series 009-SS Stainless Steel Backflow Prevention RPZ Devices with Strainer, Unions & Lockable Ball Valves  DOWNLOAD INSTALLATION DOW...

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Watts Series 007 Brass Double Check Valves Backflow Preventor Assemblies with Strainer, Unions & Lockable Ball Valves  DOWNLOAD BROCHURE DOW...

Watts Series 009 Brass Backflow Prevention RPZ Devices with Strainer, Unions & Lockable Ball Valves   DOWNLOAD INSTALLATION DOWNLOAD BROCHU...

FD Quick Code: 491976 MPN: 0559118 UPC: 098268451818 Manufacturer: Watts Water Technologies Brand: WATTS® Prop65: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. In Stock - (Ships same day when order is placed before 2pm PT M-F)

Conbraco Apollo Series 4A-100 Brass Double Check Valves Devices  Download Product Brochure The Apollo Series 4A-100 Double Check Valves are ...

Conbraco Apollo Series 4A-200 Brass Backflow Prevention RPZ Devices  Download Product Brochure The Apollo Series 4A-200 Reduced Pressure Pr...