How do you connect a drain line to a bathroom sink drain?

Asked By: Lira Arazola | Last Updated: 8th January, 2020
Category: home and garden home appliances
4.2/5 (167 Views . 11 Votes)
How to Connect a Bathroom Sink Drain. A sink is connected to the drain plumbing by a tailpiece that's tightened to the drain flange. Hand-tighten a female adapter onto the drain stub-out at the wall. Slide slip nuts onto the drain arm and the sink's tailpiece, and tighten the connection at the base of the sink.

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Also, what size is bathroom sink drain pipe?

While a bathroom sink's design and overall size may vary from one model to the next, the drain holes are fairly standard, 1.25 inches being a general standard, with widths of 1.5 inches and 1.625 inches also common. The size of the hole helps determine which size drain is needed for that particular sink.

Similarly, how do you attach a P trap to a drain pipe? How to Install the P-Trap under a Sink

  1. Slide the short side of the P-trap onto the tailpiece that drops down from the sink drain.
  2. Take the lower part of the P-trap apart and insert the trap arm into the wall drain fitting as far as it will go.
  3. Pull the trap arm out of the wall fitting until it lines up with the top U-shaped portion of the trap.

Also to know is, can I drain a sink into a floor drain?

A sink needs to be connected to your sanitary sewer. The floor drain will be connected to your storm sewer. If you are in an older home, where they are shared, you could do it, but you will have to excavate the floor and make the connection sub-slab with rigid connections and not flexible hose or pipe.

Why is my bathroom sink not draining?

Slow-moving or stopped-up drains are common in bathroom sinks, but luckily the fix is usually simple and takes only about 15 minutes. The problem is caused by hair and gummy soap scum that get caught on the stopper or pivot rod and clogs the drain.

27 Related Question Answers Found

How far below drain should P trap be?

According to the International Residential Code, the maximum vertical distance between the sink drain and the entrance to the p-trap is 24 inches.

What is a trap adapter?

Simply put, trap adapters are used to connect a kitchen or bathroom sink to the drain pipes. This is a standard 1 ½" male ABS trap adapter, that is designed to fit inside a fitting, like a "P" trap or pipe coupler.

How do you remove a drain tailpiece?

Loosen the nut connecting the tailpiece — the straight section of pipe that connects the sink to the P-trap — to the drain body on the underside of the sink. Unscrew the tailpiece using a wrench or pliers. Pull down on the pipe to break it free.

What is the name of the fitting that connects the P trap to the drain?

The waste arm (also called a trap arm or J-bend) is a straight length of pipe with one straight end that fits into the branch drain opening in the wall. The other end curves down to connect to the trap bend.

What is a sink drain tailpiece?


The Drainpipe Tailpiece
The next piece down from the sink basket is the tailpiece -- a long, straight piece of pipe that attaches to the bottom of the drain basket with a slip-joint connecting nut. A plastic or rubber compression washer seals the pipes for a leakproof joint.

Can a toilet and shower share the same drain?

Your shower drain can connect to the toilet drain, but it cannot connect to the toilet trap arm. So if your "main drain connection" is also the vent for the toilet, the line from the closet flange to the main drain connection is trap arm and the answer is no, the shower cannot tie in here.

Can a shower and sink share a drain?

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 long is rough in plumbing?

Plumbing rough-in should take between 3 – 5 days, barring any problems.

How high should bathroom sink drain be from floor?

Sink drain lines are typically between 18 and 20 inches above the finished floor. Water supply lines are usually just a couple of inches higher, between 20 and 22 inches from the floor, and installed one to each side of the drain line. These heights are compatible with most common vanity sinks.

Can two toilets share the same drain?

Most houses have more than one toilet, and if they are on the same side of the house, their waste lines can usually tie into the same stack. If they are on opposite sides, however, each may need its own stack. Since the stacks must be vented, this would mean two vent openings on the roof.

Does a shower drain need a vent?

Everyone knows that every toilet, bathtub, sink, shower, etc. will have a drain to carry the water away to sewage treatment, or your septic. Whether you're putting in a tub, toilet, sink, or floor drain, they all need a plumbing vent on the drain to make it work properly.