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Q: Does bathtub overflow drain prevent flooding?
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What is an overflow in a bathtub?

Typically right under the faucet in a bathtub is a round metal piece with holes. This is an overflow outlet. It connects to the bathtub drain. If water rises over that disk, it will go through the overflow...so your tub does not fill completely and overflow the edge of the tub. The overflow prevents accidental flooding of the bathroom.


Where does a waste and overflow set go?

Its your bathtub drain.


How does a bathtub overflow work?

A quick way would be to drop into a plumbing supply store. They often have tubs on display with the overflow drain hooked up. You will be able to see where the overflow water goes down the drain. Des Perado


Does a tub overflow valve prevent ALL overflow?

AnswerIt may not, but it should. The International Residential Code gave this clarification: "Yes. An overflow is required to remove displaced water when a bather enters the bathtub or to protect against accidental flooding resulting from an unattended filling operation."Most tub drains lead to the same outflow pipe as the bottom drain, so if the pipe has a blockage, it will do no good. Also, the rate of flow of water into the tub can exceed the ability of the over-flow drain to keep up.


Is the sink overflow made to prevent the sink from overflowing even if the drain stopper is down and the water if fully on?

In my experience, I would say no. Several reasons can prevent the overflow from working. Since the overflow of the sink is rarely used it has a tendency to be blocked at the lower portion where the sink joins the drain pipe. During normal use and over years the holes in the sink drain at the point where the overflow and drain pipe meets has a tendency to clog making the overflow drain slowly. You can notice this when your sink drains with a "gulping" sound. You can test the overflow drain and see how obstructed it is, but do it slowly and do not turn on the faucets on full.


How do you find the center mark for a bathtub?

Do you have the tub where you can measure it? If so, measure from the back of the tub to the center of the overflow, that will give you the measurement for the drain.


Does a slow drain in bathtub have anything to do with overflow to cause ceiling damage?

NO -- you will have to open up wall behind tub to see where it is leaking from.


How do you prevent the sewer drain from flooding the basement?

You hire a plumber to put in a one way sewer drain valve.


Will a PVC fast tap saddle work for adding a vent line to a bathtub drain after construction is done?

There is an overflow pipe on every tub. There is no further need to vent.


How do you install overflow drain in non over-flow sink?

The overflow is built into the sink, it is not part of the drain. If there is no overflow, you can not add it.


If your bathtub is filled to the drain valve handle and overflows into the drain valve hole where does the overflow go or how should this be piped?

It either goes into the ceiling undetected for a long time Or it can go down the over flow past the stopper and into the drain line depending on whom did the installation


What part of speech is the word Bathtub in the sentence Did my smelly soap slip down the bathtub drain?

In this usage, "bathtub" is an adjective, modifying the noun "drain."