## How to Reattach a Kitchen Sink Drain Pipe
The kitchen sink drain pipe is an essential part of your plumbing system, allowing wastewater to flow out of your sink and into the main drain line. If the drain pipe becomes loose or disconnected, it can cause leaks, clogs, and other problems. Fortunately, reattaching a kitchen sink drain pipe is a relatively simple task that can be completed in a few steps.
### Tools and Materials
Before you begin, gather the following tools and materials:
* Adjustable wrench
* Pliers
* Bucket or bowl
* Rags or paper towels
* New rubber washer (if necessary)
### Step-by-Step Instructions
1. **Turn off the water supply to the sink.** This is typically done by turning the valve under the sink or by closing the main water supply valve.
2. **Place a bucket or bowl under the drain pipe to catch any water that may leak out.**
3. **Use an adjustable wrench to loosen the slip nut that is holding the drain pipe in place.** The slip nut is located at the top of the drain pipe, where it connects to the sink drain.
4. **Once the slip nut is loose, carefully pull the drain pipe away from the sink drain.** Be careful not to spill any water that may be trapped in the pipe.
5. **Inspect the rubber washer that is located on the end of the drain pipe.** If the washer is damaged or missing, replace it with a new one.
6. **Apply a small amount of plumber’s putty to the end of the drain pipe.** This will help to seal the connection between the pipe and the sink drain.
7. **Reinsert the drain pipe into the sink drain.** Make sure that the rubber washer is properly seated against the drain.
8. **Hand-tighten the slip nut onto the drain pipe.** Once the slip nut is hand-tight, use the adjustable wrench to further tighten it. Do not overtighten the slip nut, as this can damage it.
9. **Turn on the water supply to the sink and check for leaks.** If you see any leaks, tighten the slip nut further or replace the rubber washer.
### Tips
* If you have a double sink, you will need to reattach both drain pipes.
* If the drain pipe is completely clogged, you may need to use a drain snake to clear it before reattaching it.
* If you are not comfortable working on plumbing, it is best to call a plumber for assistance.
### Troubleshooting
* **Leak from the slip nut:** Tighten the slip nut further or replace the rubber washer.
* **Leak from the drain pipe:** Apply more plumber’s putty to the end of the pipe or replace the pipe.
* **Clogged drain:** Use a drain snake to clear the clog.
* **Bad smell from the drain:** Pour a cup of baking soda down the drain followed by a cup of vinegar. Let the mixture sit for 30 minutes, then flush the drain with hot water.