What is a flapper backwater valve?
Normally open backwater valves- this valve has a hinged flapper that rests on the bottom of the valve in the normally open position. It floats up and closes only when a reverse flow occurs. Some of these types of valves have a clear plastic cover to allow visual inspection.(Like the illustration below) 2.)
What kind of valve is a backwater valve?
Backwater Valves are a one-way valve which provides back flow prevention for residential and commercial applications whether connected to municipal sewer line or a private septic system. Designed to prevent fluids from backing up and flooding, due to an obstruction in a sewer system or storm drain.
Is a backwater valve the same as a check valve?
A check valve is usually used to prevent liquids from contaminating a clean water supply, for example. A backwater valve is often intended to protect your sewage line, though.
Is a backwater valve the same as a backflow preventer?
A backwater valve is a backflow prevention device used to prevent outbound water through a dwelling’s drain pipes from re-entering — “back flowing”—into a home. The valve contains a flap that allows water to exit the home, but closes to prevent the back flow into the home.
What is a check ball?
One of those valves designs utilize a check ball, which allows or blocks fluid flow. Fluid pressure causes a check ball that sits in a pocket to block and unblock on orifice that fluid is flowing through or trying to flow through. This controls the timing and redirection of fluid flow.
Do backwater valves fail?
Like many things in a home, backwater valves require periodic maintenance to ensure proper performance over time. An improperly maintained valve may fail during a flood event.
How do you test a backwater valve?
Backwater valves are usually located in the floor of your basement. If you know where to find your sump pump, the backwater valve is probably nearby. There may be a rectangular panel on top, but often the compartment itself is clear so that you can see inside relatively easily and the round cap can be removed.
What is the difference between a double check and a Rpz?
Double check valves are used for non-health hazard cross connections in continuous pressure applications. RPZ backflow preventers include two check valves like a double check backflow preventer, but they also have an intermediate relief valve that opens to atmosphere if both check valves should fail.
Are backwater valves worth it?
Why should I install a backwater valve? Backwater valves are just one of many ways to prevent flooding in your home. Besides preventing a damaging sewer backup (and the costly repairs that could come with it), a backwater valve could also help save you money.
Can you have a backwater valve without a sump pump?
A licensed plumber can install a backwater valve and will ensure downspouts and foundation drains are properly disconnected. He or she can also install a sump pump at the same time, if required.