Reconfigure and Connect New Drain Pipes — Assemble New Drain Pipes
Part of project
How to Remove a Garbage Disposal and Install a Standard Sink Drain · Step 8 of 10
In this video
With the disposal mounted, assess the plumbing needed to connect the discharge outlet to the wall drain. In this case, the original plumbing for the second sink basin was cut and capped. A new S-trap kit was used. The discharge elbow that came with the disposal was connected to the disposal unit. This elbow was then connected to the new S-trap, which in turn was connected to the main drain line via a series of adapters. This may require cutting PVC pipes to the correct length and using slip nuts to connect all the pieces. Ensure all connections are hand-tightened, then given a final quarter-turn with pliers if necessary.
Goal: Connect the garbage disposal's drain outlet to the main household drain pipe.
- Dry fit all the pipes before cementing or tightening them to ensure proper alignment and slope for drainage.
- If you have a dishwasher, this is when you would remove the knockout plug from the dishwasher inlet on the disposal and connect the dishwasher drain line.
Used in this video
- Saw (Tool Type: Hand Tools) · optional — Cutting PVC pipes to the correct length.
- Channel Lock Pliers (Tool Type: Pliers) · optional — Giving a final tightening to slip nuts.
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FAQs
What is the absolute first thing I need to do to ensure safety before touching any plumbing or electrical connections under the sink?
Before doing anything, turn off the power to your garbage disposal at the breaker box. This is crucial to prevent electrical shock. Additionally, turn off the water supply to your sink and place a bucket under the work area to catch any residual water.
The project says 'beginner' and '4 hours.' Is that realistic for someone with limited plumbing experience?
Yes, this project is generally beginner-friendly if you follow the steps carefully. The 4-hour estimate is reasonable for someone tackling this for the first time, assuming you have all tools and materials ready. Experienced DIYers might finish faster, but it's always best to budget extra time for unexpected challenges.
What's the most common reason for leaks after installing a new sink drain, and how can I prevent it?
The most common cause of leaks is improper sealing around the new basket strainer or loose connections in the drain pipes. Ensure you apply a generous, even bead of plumber's putty around the rim of the basket strainer before seating it. Hand-tighten all slip-joint connections firmly, then give them a quarter to half turn with pliers, being careful not to overtighten and crack the plastic.
Why is plumber's putty so important for this project, and how should I use it effectively?
Plumber's putty is essential for creating a watertight seal between the new sink basket strainer and the sink opening, preventing leaks. Roll a rope of putty about 1/2 inch thick and press it firmly under the flange of the new strainer before inserting it into the sink drain hole. Excess putty will squeeze out and can be easily removed.
Reconfigure and Connect New Drain Pipes — Assemble New Drain Pipes
Part of project
How to Remove a Garbage Disposal and Install a Standard Sink Drain · Step 8 of 10
In this video
With the disposal mounted, assess the plumbing needed to connect the discharge outlet to the wall drain. In this case, the original plumbing for the second sink basin was cut and capped. A new S-trap kit was used. The discharge elbow that came with the disposal was connected to the disposal unit. This elbow was then connected to the new S-trap, which in turn was connected to the main drain line via a series of adapters. This may require cutting PVC pipes to the correct length and using slip nuts to connect all the pieces. Ensure all connections are hand-tightened, then given a final quarter-turn with pliers if necessary.
Goal: Connect the garbage disposal's drain outlet to the main household drain pipe.
- Dry fit all the pipes before cementing or tightening them to ensure proper alignment and slope for drainage.
- If you have a dishwasher, this is when you would remove the knockout plug from the dishwasher inlet on the disposal and connect the dishwasher drain line.
Used in this video
- Saw (Tool Type: Hand Tools) · optional — Cutting PVC pipes to the correct length.
- Channel Lock Pliers (Tool Type: Pliers) · optional — Giving a final tightening to slip nuts.
Frequently Asked Questions
What is the absolute first thing I need to do to ensure safety before touching any plumbing or electrical connections under the sink?
Before doing anything, turn off the power to your garbage disposal at the breaker box. This is crucial to prevent electrical shock. Additionally, turn off the water supply to your sink and place a bucket under the work area to catch any residual water.
The project says 'beginner' and '4 hours.' Is that realistic for someone with limited plumbing experience?
Yes, this project is generally beginner-friendly if you follow the steps carefully. The 4-hour estimate is reasonable for someone tackling this for the first time, assuming you have all tools and materials ready. Experienced DIYers might finish faster, but it's always best to budget extra time for unexpected challenges.
What's the most common reason for leaks after installing a new sink drain, and how can I prevent it?
The most common cause of leaks is improper sealing around the new basket strainer or loose connections in the drain pipes. Ensure you apply a generous, even bead of plumber's putty around the rim of the basket strainer before seating it. Hand-tighten all slip-joint connections firmly, then give them a quarter to half turn with pliers, being careful not to overtighten and crack the plastic.
Why is plumber's putty so important for this project, and how should I use it effectively?
Plumber's putty is essential for creating a watertight seal between the new sink basket strainer and the sink opening, preventing leaks. Roll a rope of putty about 1/2 inch thick and press it firmly under the flange of the new strainer before inserting it into the sink drain hole. Excess putty will squeeze out and can be easily removed.