How to Replace Pipes Under Kitchen Sink Easy and Simple Process

Do you know what a P-trap is? It is a curved section of drain pipe beneath your sink, which is responsible for a lot of filthy work. They seep, degrade, or become clogged with years of leftover soap and grease over a period. Before changing a P-trap, be sure it is the same one you took out.

The pipes under your kitchen sink may appear intimidating, particularly if you have multiple sinks, but replacing a sink drain pipe is easier than you think, even if you have no plumbing expertise. Compression fittings link the curved pipes, known as P-traps, to the sink drain and waste lines, and these may frequently be unscrewed without the need of a tool.

If you are changing pipes to repair a leak, make sure the new pipes are aligned properly before installing them. The compression fittings will not seal if they are even marginally out of line, and the pipes will begin to leak. Don’t worry! A helpful instruction on how to repair pipes beneath the kitchen sink is here.

Step by Step Guide to Replace Pipes Under the Kitchen Sink

Ever seen a movie scene where someone is trying to fix their drainage pipes? And things go awry? Resulting in them being drenched in water and muck? It is how most people imagine the procedure, yet changing your sink traps is one of the simplest jobs you will ever undertake.

Things you Will Need

You will just need a few simple plumbing equipment and an afternoon to complete this task. Once you have confirmed the two prerequisites, follow my step by step guide. Firstly, collect all the items that you would need to start this project.

Taking your checklist to a nearby hardware store and asking them to obtain them for you is an easy method. It is also necessary that you bring a model of the drain pipes you are replacing with you so that they can advise you on the best pipes to use.

  1. Medium size pipe wrench
  2. Plumbers tape
  3. Connector sleeve (for fastening the drain pipe to current pipes)
  4. Pipe glue
  5. Adjustable wrench
  6. Bucket
  7. Kit (containing sink connectors and the drain traps)
  8. PVC pipe (for connecting to drainage pipe bottom)
  9. Pipe cleaner

Step 1: Bye Bye Old Pipes

The first phase in replacing a kitchen drain pipe is to remove the old piping. The major components of the plumbing that you will repair generally come apart simply, but a blocked pipe may necessitate the use of a few pieces of equipment.

  1. Put a bucket beneath the curved parts of the P-traps and switch off the water valves to avoid being drenched if someone uses the faucet while you are operating.
  2. Examine the pipe configurations and, if required, take measurements using a tape measure.
  3. If required, you may purchase the appropriate components and cut the pipes to the appropriate lengths.
  4. Remove the P-trap connections from the sink tailpieces (the pipes that extend down from the sink) and the drain. You can generally do this by grabbing each nut and rotating it counterclockwise with your hand. If it is difficult to spin, try adjustable pliers. To release the threads on metal traps, you may need to spray lubricant on the nuts.
  5. Remove the traps from the connectors, flip them over to drain the water into the bucket, and keep them separate.
  6. Disassemble the connection between the traps and the common tee, then remove the tee.
  7. In the same manner, remove any other pipes.
  8. If required, remove the drain tailpieces. They might be creating leaks if they’re too short or rusted. To remove one, spin it clockwise using adjustable pliers to detach it from the drain.

Step 2: Replace Drain Pipe

You are set to place your new pipes under the kitchen sink now that the old pipes are out of the line. Did you know that the secret to preventing leaks when putting in new pipes is to have a perfect fit and secure linkages?

  1. Replace the tailpieces with new ones that are long enough to achieve the same level as the drain pipe in the wall.
  2. Extend the tailpieces to a position about two feet above the bottom of the cabinet if the drain pipe is on the floor.
  3. With a hacksaw, cut the tailpiece as required.
  4. With a hacksaw, cut new pipes to suit the ones you took out.
  5. Use a pipe with the same diameter as the one you’re using, either 1 1/4 or 1 1/2 inches.
  6. For household drains, PVC pipe is preferred over metal since it does not corrode.
  7. Connect the pipes with compression fittings, hand-tightening the nuts until the P-traps are ready to be installed.
  8. Each trap should be slid up into its corresponding tailpiece, tightened, and then swiveled to meet the drain pipe.
  9. Put that end of the trap together and secure the nut.

Step 3: Test

After you have finished assembling the sink, fill it with water. Inspect for leaks by opening the drain and letting the water escape.

  1. You may now switch on the water from the central system and let it flow for a while to observe how it all functions.
  2. Allow the water to fill the under-sink cabinets while you search for leaks.
  3. If there is a leak, attempt to figure out where it is coming from.
  4. If the leak is coming from a slip nut connection, shut off the water and inspect the washers for abrasions and proper installation.
  5. Adjustable pliers should be used to tighten any leaky connections.

In conclusion, to help you out, I provided a quick method to replace pipes beneath the kitchen sink. As you can see, everything is straightforward and uncomplicated. Needless to say, you could hire a plumber, but why should you when you can get your hands dirty and complete the task yourself? What do you think? Let me know in the comments section below!