## How to Replace a Kitchen Sink Waste Pipe
Replacing a kitchen sink waste pipe is a relatively simple plumbing task that can be completed in a few hours with the right tools and materials. Here are the steps on how to do it:
### Tools and Materials You’ll Need:
– Adjustable wrench
– Basin wrench
– Channel locks
– Plumber’s putty
– Utility knife
– New waste pipe
### Step 1: Turn Off the Water Supply
Before you begin, turn off the water supply to the sink. You can do this by closing the shut-off valves under the sink or by turning off the main water supply to your home.
### Step 2: Loosen the Nuts
Use the adjustable wrench to loosen the nuts that hold the waste pipe in place. There will be one nut on the top of the pipe and one on the bottom.
### Step 3: Remove the Old Waste Pipe
Once the nuts are loose, you can remove the old waste pipe by pulling it straight down. If the pipe is stuck, you can use the channel locks to break it loose.
### Step 4: Clean the Drain Hole
Use the utility knife to clean any debris or old plumber’s putty from the drain hole. This will help to ensure that the new waste pipe fits snugly.
### Step 5: Apply Plumber’s Putty
Roll a small amount of plumber’s putty into a rope and apply it to the bottom of the new waste pipe. This will help to create a watertight seal.
### Step 6: Insert the New Waste Pipe
Insert the new waste pipe into the drain hole and tighten the nuts by hand. Use the adjustable wrench to further tighten the nuts, but be careful not to overtighten them.
### Step 7: Reattach the P-Trap
Reattach the P-trap to the waste pipe by tightening the nuts on the slip joints. Again, be careful not to overtighten the nuts.
### Step 8: Turn On the Water Supply
Turn on the water supply and check for leaks. If you see any leaks, tighten the nuts on the waste pipe or P-trap until the leak stops.
### Step 9: Finish Up
Once you have confirmed that there are no leaks, you can finish up by cleaning up any debris and putting away your tools.
### Tips:
– If you are replacing a waste pipe that is connected to a garbage disposal, you will need to disconnect the disposal from the pipe before you can remove the pipe.
– If you are having trouble removing the old waste pipe, you can try using a penetrating oil to loosen the nuts.
– Be sure to use a new waste pipe that is the same size as the old pipe.
– If you are not comfortable replacing the waste pipe yourself, you can call a plumber to do it for you.
### Conclusion:
Replacing a kitchen sink waste pipe is a relatively simple task that can be completed in a few hours with the right tools and materials. By following the steps outlined in this article, you can save yourself the cost of hiring a plumber.