Pressureregulator

A backflow prevention device, also known as a flood mitigation or shutoff valve, is a valve designed to prevent stormwater or sewage from flooding your building through any toilets, sinks, showers, or other drains. Building drainage and sanitary systems are designed to remove sewage and other liquid waste from structures, but when floodwaters enter and overload the municipal sewage or stormwater system to which your pipes connect, the direction of flow can reverse, causing contaminated water to back up into your building. Sewage backup can occur even if a building does not otherwise flood, usually due to service lines that are broken or completely or partially blocked by grease, waste, or tree roots. A backflow prevention device can be installed directly into your main drain pipe, preferably outside of the building ahead of the point where the main drain pipe enters the structure, to stop the reverse flow of water from the city’s system into your home or business.

Waterpressureregulator

Backflow prevention devices include check valves, gate valves, ball float check valves, flap valves, and dual backflow valves. They can be automatic or manual, and configured in an open or closed position. A normally open valve is typically open to allow sewage to flow out during normal use but closes if backflow occurs, whereas a normally closed valve is typically closed and only opens when regular flow in the designed direction occurs to let the sewage exit. Dual backflow valves, while the most expensive, are most often recommended as they are a combination of check (closed) and gate (open) valves, which provide dual protection against infiltration; this can be valuable for a building that repeatedly has backflow flooding.

Pressure Reducing Valve

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You should have your backflow prevention devices installed by a qualified, licensed plumber in a location that allows best access for inspection, maintenance, and cleaning, preferably outside the structure to minimize damage should the sewer line fail. Regular inspection and maintenance are critical to make sure that the valve has not been affected by soil or debris, and that it is still functioning properly. You might also consider installing a sewer backup alarm to warn you when the backwater valve is activated so that you know to minimize your water usage.

Reduce Flood Risk https://www.reducefloodrisk.org/mitigation/install-backflow-prevention-device/ Printed: 11/01/2024