How to Hook Up Kitchen Sink Drain?

I wish I knew how to do the kitchen sink pipe connection. I hired a local plumber and he charged a lot for the task but actually it was an easy one. Watching him I learned that you have to follow a series of steps with the right tools. You will need to take exact measurements, cut, and connect pipes to complete the task. I can share a brief about the kitchen sink connection to drain here.

What Is The Process For Installing New Kitchen Sink Drain?

Kitchen sink drain installation is somewhat the same for all sink types so let me tell you how one installs it:

• The initial step is to disconnect all the plumbing line and remove the old drainage pipes

• Next, just assemble all the new drainage pipes and make sure they have fit properly

• After that, apply the plumber’s putty to the drain flange 

• The next step is important. Carefully insert the drain into the sink opening and secure it from below

• Attach the tailpiece to the drains and connect it with the P-trap

• Tighten all the connections securely with a wrench

• Check for leaks

• Reconnect all the plumbing lines and check whether everything is working fine or not

Overall, the process is easy but in case you have any doubt or find it difficult, seek an expert’s help. 

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Hi Buddy,

Are you going to install a deep basin sink in place of a normal sink? Installing a new drain assembly for the new sink is frequently required. I've done this before at my house and would want to share how to hook up kitchen sink drain with you guys.

Kitchen sink drain design traps come in a variety of bundled kits with varying parts configurations to fit certain situations—some for single-basin sinks, some for double-basin sinks, and others for sinks with a garbage disposal. Both chromed copper and PVC plastic drain trap kits are available; for kitchen sink drains, which are usually hidden from view, most people now use plastic pieces.

Kitchen drains are typically 1 1/2-inch in diameter, as opposed to the 1 1/4-inch pipes commonly found in bathroom sinks, so be sure you obtain the correct size. A 2-inch kitchen drain outlet might be seen on rare occasions. If this is the case, adaptor fittings can be used to connect a 1 1/2-inch drain kit to a 2-inch outlet pipe.

• Measure the height of the drain outlet:

It's a good idea to measure the height of the trap arm on the old sink before removing it and replacing it with a new one. Between the U-shaped trap bend (the P-trap) and the branch drainpipe in the wall is the trap arm, which is a horizontal piece. It connects to a sanitary tee fitting in the branch drain and should slope down at about 1/4 inch per foot for proper drainage.

• Measure up from the cabinet's floor or base to the trap arm's centre:

If the height is greater than 16 inches, a new sink may not be able to accommodate the required downward slope for the trap arm.

If necessary, lower the drain outlet.

You (or a professional) will need to open the wall and lower the location of the sanitary tee connecting to the drain pipe in the wall if the present drain outlet is not low enough to fit the depth of the new sink. This is a difficult job that necessitates cutting away the back of the cabinet as well as the wall surface.

• Place the Garbage Disposal and Strainer in place

Install the garbage disposal first on the sink's chosen side, as this takes up the most room.

Then, on the remaining sink basin, put a basket strainer. Installing any other under-sink components, such as a water filter or a hot water dispenser, is also a good idea at this time. As you join the drain pipes, you'll have to work around these fittings.

• Place the Drain Tailpiece and the Continuous Waste Pipe in place

The drain tailpiece connects the sink strainer to a tee fitting via a short vertical length of straight pipe. The continuous waste pipe from the garbage disposal (or another sink basin) will be accepted by the side outlet on the tee fitting, while the bottom outlet will continue on to the drain trap.

Using a slide nut, temporarily secure the tailpiece to the sink strainer (and slip washer, as applicable). Using a slide nut and washer, temporarily connect the curved end of the continuous waste pipe to the garbage disposal's drain outlet. Allow the pipe's straight end to protrude past the sink basin's vertical tailpiece.

The pipe should be slightly slanted downwards toward the tailpiece.

Mark cutting lines on both pipes where they will fit into the tee fitting by holding the tee fitting up to the tailpiece and waste pipe. With a PVC tubing cutter or a hacksaw, cut the tailpiece and continuous waste pipe to length.

Replace the tailpiece and continuous waste pipe, as well as the tee, and hand-tighten the connections. Make any necessary adjustments to the parts, ensuring that the continuous waste arm has a tiny downward pitch toward the tee fitting.

With channel-type pliers, tighten the slip nuts a little more. The plastic threads can be destroyed if you use too much power, so don't overtighten them.

• The Drain Trap should be connected:

A U-shaped trap bend and a J-shaped trap arm are included in the drain trap assembly. The trap arm extends into the drain outlet in the wall, while the trap bend attaches into the bottom of the tailpiece tee fitting.

With a slip nut and washer, loosely connect the trap bend and trap arm. Attach a slide nut and washer to the trap arm's straight end. Slide the trap arm into the drain outlet at the wall while pushing the trap bend up into the tee fitting on the tailpiece.

Make any necessary adjustments to the trap pieces to produce the most direct path from the sink to the drain outlet.

Make sure the trap arm is facing the drain outlet at a modest downward angle.

If the trap arm is too long to suit the space, mark it and trim it as needed, then replace the P-trap assembly. Using channel-type pliers, tighten all slip nuts. Don't overtighten this time.

Check that the continuous waste pipe and the trap arm are angled slightly downward in the direction of the water flow, then tighten all of the drain connections.

• Look for any leaks

Check for leaks at each pipe joint by running water through both sink basins. Tighten any leaking connections. Fill each sink basin with water and let it drain quickly while you check for leaks underneath.

Slip-nut joints are known to leak a little bit. Usually, all that is required is a simple tweak. If tightening the nut doesn't stop the leak, unscrew it, reinstall the washer, and tighten it again, ensuring sure the nut isn't cross-threaded.

I would like to conclude here about how to hook up kitchen sink drain. I hope this helps:)

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