Double checkNon ReturnValve

A Double Check Valve Assembly (DCVA) is a device that is used to prevent backflow in a water distribution system. It consists of two independent check valves that are connected in series and a testable auxiliary valve. The DCVA works by allowing water to flow in one direction, while preventing it from flowing in the opposite direction. When water flows through the first check valve, it opens and allows the water to pass through. When the water flow stops or reverses, the first check valve closes, preventing the water from flowing back. The second check valve works in the same way, providing an additional layer of protection against backflow. The testable auxiliary valve is used to test the proper functioning of the check valves. It allows the water to flow in the opposite direction to the normal flow for testing purposes. In the event of a backflow condition, such as a sudden increase in the water pressure upstream, both check valves will close and prevent the contaminated water from flowing into the potable water supply. This ensures that the drinking water remains safe and clean. Double Check Valve Assemblies (DCVAs) are available in a wide range of sizes and flow rates to suit different applications. The size and flow rate of a DCVA will depend on the specific requirements of the water distribution system it is being used in. In general, DCVAs are available in pipe sizes ranging from 1/2 inch to 12 inches. The flow rate of a DCVA is measured in gallons per minute (GPM). Capacity Size         Flow 2-1/2"    149 gpm 3″            230 gpm 4″            397 gpm 6″            900 gpm 8″          1559 gpm 10″       2458 gpm 12″       3525 gpm Based on Sch 40 Pipe and 10 ft/sec Caption: Double Check Valve Assembly (Zurn 350A)

High quality industry-based training will encourage plumbers to stay in our Industry by offering the flexibility of being able to train for a variety of roles.

TestableDouble Check Valve

SUBURBAN PRESSURE RELIEF VALVE 3/4" MPT FOR SW6PA SW6DA & SW5EA ... main product photo.

50mmdouble check valve

The Surejust expansion tank complements any hot water system and provides a safer and smother water system. It comes pre-assembled and pressure set for easy ...

The objective of the floor drain is to only drain the water or liquid substances present in the room, any place where there is water.

Check valve

Backflow Parts USA is a master parts distributor and we carry backflow parts and backflow devices for Watts, Febco, Wilkins, Ames, and Conbraco.

You do not have permission to retrieve the URL or link you requested,     If you think this was a mistake please call 1300 134 174 or e-mail customercare@realestate.com.au     and quote the reference number #18.944ddb17.1730356657.2274f956

Double check valvesymbol

These systems are best for homes, apartments and offices. Whether your on untreated well water requiring UV sterilization or city water we have a system that ...

The BOSS™ range is renowned for offering competitively priced products that don't compromise on quality.

You no longer have to send cold water down the drain while waiting for warm water. Instead, recirculating pumps rapidly pull hot water from a water heater, ...

Double check valveAir brakes

2020528 — ASCO General Service Solenoid Valves Series 210 Features: · Wide range of pressure ratings, sizes, and resilient materials provide long service ...

ParkUSA, a Northwest Pipe Company, provides innovative water, wastewater, and stormwater equipment and technology for infrastructure and built environments. Our design and manufacturing capabilities offer client focused solutions to meet the growing demands and regulatory requirements of the water industry.

There are two kinds of grill regulators – single-hosed and double-hosed. Most often, however, you'll see regulators of the single-hose variety. The propane in ...

Double Check ValveBackflow Preventer

•The Double Check Valve Assembly (DCVA) is designed to prevent backflow in a water distribution system where there is a non-health hazard. It features a backflow preventer to stop the reverse flow of liquids caused by backpressure or backsiphonage. The DCVA has a compact vault design which allows for easy installation and maintenance. The single cover, top-entry design provides convenient access for maintenance. DCVAs can be installed in systems under continuous pressure service and may be subject to back pressure. In non-flow conditions, the check valves maintain a minimum of 1 PSI in the direction of flow. In flow conditions, the check valves open proportionally to the flow demand. In the event of backflow, the check valves will close until normal flow is resumed.