Backflow Preventers Double Check Valve Assemblies Designed for use in non-health hazard cross-connections and continuous pressure applications subject to backpressure or backsiphonage incidents, such as lawn sprinklers, fire sprinkler lines, commercial pools, tanks and vats, and food cookers.

Nov 17, 2023 · Any time the pressure on the property (downstream) side exceeds the pressure on the city (public) side, the two redundant check valves close stopping the backwards water flow. There are two problems with the Double-Check backflow preventer.

Series 2000SS Double Check Valve Assembly Backflow Preventers are designed to prevent the backflow of polluted water from entering into the potable water supply. It consists of a compact construction and short lay length, ideal for retrofit installations.

The Zurn Wilkins 350 Double Check Valve Backflow Preventer provides low hazard protection for all applications. The flanged, epoxy coated ductile iron body is available with multiple shut-off valve options for installation versatility.

Backflow preventers are essential safety devices in plumbing systems, protecting potable water from contamination. Among the various types of backflow preventers, the double check valve assembly (DCVA) is one of the most common and simplest. This blog post will explain how a DCVA works, highlighting its components and operating principles.A double check valve …

The BFP series dual check valve prevents backflow of contaminated water into potable water supply lines. Constructed of a brass body with two spring loaded poppet-type valve modules and threaded female union inlet and outlet connections. Internal strainer screen, and …

The 2" Zurn Wilkins 950XL3 Double Check Backflow Assembly with union ball valves provides low hazard protection against backsiphonage and backpressure in potable water applications. The 900XL3 series offers the most compact and lightest bronze small backflow available on …