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People also ask
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What does a detector check valve do?
The Zurn Wilkins 310 Single Detector Check Valve prevents the reverse flow of non-hazardous substances into the water supply. The 310 is used to protect upstream equipment, and is not adequate for low or high hazard backflow prevention.
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How does a backflow check valve work?
In order to stop backflow, check valves are typically fitted in pipes. The flow can freely move one direction through a check valve, but if the flow changes, the valve will close to safeguard the piping, other valves, pumps, etc.
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How does a double detector check work?
The Double-Check Assembly (Figure 1) was developed in the 1950s for the fire industry. 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.
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How does double check valve work?
Usually, these check valves are installed in series, which means that if one valve were to fail (for whatever reason) then the second valve can act as a backup and prevent backflow.
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What is the purpose of check valve?
What is a check valve? Check valves are generally installed in pipelines to prevent backflow. A check valve is basically a one-way valve, in which the flow can run freely one way, but if the flow turns, the valve will close to protect the piping, other valves, pumps etc.
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How does a double detector check valve work?
It consists of two check valves assembled in series. This employs two operating principles: firstly one check valve will still act, even if the other is jammed wide open. Secondly the closure of one valve reduces the pressure differential across the other, allowing a more reliable seal and avoiding even minor leakage.
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What is the difference between a double check detector and a double check valve?
The Double Check Valve Assembly (DCVA) is used for a typical large business, condominium or high-rise building. The Double Check Detector Assembly (DCDA) is installed on a line that supplies water to the building's fire suppression system, which includes the fire sprinklers or standpipes.
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Can I use a check valve instead of a backflow preventer?
Like a backflow preventer, a check valve stops media from flowing through it in the reverse direction. Check valves, however, do not offer the degree of protection that backflow preventers do and therefore are not suitable for protecting drinking water sources.
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