Readers ask: How To Connect Bathtub To Drain And Water Supply?

How is a tub connected to the drain?

A tub drain consists of two separate parts. The drain basket which connects to the drain shoe, and the drain overflow which connects to the drain shoe pipe. When these two parts connect together, they flow into the drain waste pipe which connects to the sewer or septic drain pipe.

How do you plug a bathtub with water?

A plastic bag filled with water and sealed makes a quick drain plug. Use a storage or sandwich bag and fill it with water, closing the seal. You can also tie a plastic bag that doesn’t seal by wrapping a rubber band around the ends to keep it closed. Set the water-filled bag directly over the drain and fill the tub.

Can a tub and shower share the same drain?

Yes, they will both be using the same drain pipe at somepoint inside or outside of your house. But the the pipes must join well below the level of both items or the pipe must be large enough for the combined flow, otherwise when you put water down one of them, it will flow out of the other!

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How do you replace a bathtub drain and overflow?


  1. Detach the Drain Fitting.
  2. Disconnect the Overflow Cover Plate.
  3. Remove the Waste-and-Overflow Assembly.
  4. Test-Fit the New Waste-and-Overflow Assembly.
  5. Attach the Waste-and-Overflow Assembly.
  6. Connect the Drain Fitting.
  7. Attach the Overflow Cover Plate.
  8. Test the Installation.

How do bathtub drain stoppers work?

They work by a connection between the drain stopper and a lever via a rod mechanism hidden behind the bathtub. When the lever is up, the stopper is held in place, keeping your tub filled with water. When the lever is moved down, the stopper lifts and the tub drains.

Do you need a trap on a bathtub drain?

Yes, shower and tub drains require a trap in the plumbing to prevent harmful sewer gases from coming into the home.

Are all bathtub drain threads the same?

One of the most confusing and annoying plumbing problems is replacing the bathtub drain (called a plug) that screws into the base (called a shoe). There are two common thread types (16 and 11 1/2 Threads Per Inch ), and one uncommon one (14 TPI).

How do you measure a bathtub drain flange?

Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what’s easiest to get to, you can measure from outside the tub down to its underside, or from inside the tub to the tub floor. Do not follow the curve of the tub; measure straight down.

How do you cover a bathtub drain yourself?

Place the cloth or sponge inside a plastic sandwich bag. Squeeze as much air out as you can and zip it closed or use a rubber band to secure it. Stuff the bag into the drain. The material should expand to snugly fill the hole, and the plastic bag will prevent water from escaping down the drain.

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How do you stop a bathtub drain without a plug?

Some of the best ways to block a drain without a plug include using a small cup, using plumber’s putty, finding a jar lid of the same size as the drain hole, plugging the drain with a washcloth stuffed inside a plastic bag, taping the drain hole, and using a marine drain twist plug.

Why does my tub not hold water?

When your tub won’t hold water, it’s almost always the bathtub drain stopper that’s to blame. In most cases, the problem is that the drain stopper has become disconnected from the plug or spring that connects it with the linkage, which connects the drain stopper to the trip lever.

Can two showers use the same vent?

Yes, you can vent the sink drain into the shower drain. 2. Usually, they can share the same vent if the vent is within 5 feet of both fixtures.

How close does a vent need to be to a shower drain?

UPC code, mim 2″ drain for a shower and your mim distance for a trap arm to a vent is 5 feet, but most inspectors will allow 6 to 7 feet.

Can two drains share a trap?

Yes, in most every home, multiple P traps eventually go into a single drain. The important considerations are that there is proper slope, there’s a vent within a certain distance of the drain (either wet or dry), and that the drains are properly sized.

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