Under kitchen-sink disposal erratic plumbing

House Repair Talk

Help Support House Repair Talk:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

tk3000

Senior Member
Joined
Oct 27, 2010
Messages
425
Reaction score
52
Hello Folks,

About 14 years ago, I did install a disposal under a double-sink that lacked a disposal. Looking back, under the kitchen-sink, it likely is not compliant with code. Below is a pic:

IMG_20241020_131136458.jpg

The p-trap height seems to be ok. The 90d elbow used to connect the disposal discharge port to the pipe contraption probably is not ok. It has worked well for all those years though…


Most install seems to use a straight pipe out of the disposal discharge port. But, back then, it was easier to use what I had at hand; also, was also trying to optimize the useful storage space under the kitchen cabinet. The sharp sweep (short radius) of the 90d elbow connecting the disposal to the vertical pipe does not favor easy flow. Also, I am not sure if the cap is acceptable in this situation.

Any input on how to rectify that would be appreciated.
 
Hello Folks,

About 14 years ago, I did install a disposal under a double-sink that lacked a disposal. Looking back, under the kitchen-sink, it likely is not compliant with code. Below is a pic:

View attachment 33593

The p-trap height seems to be ok. The 90d elbow used to connect the disposal discharge port to the pipe contraption probably is not ok. It has worked well for all those years though…


Most install seems to use a straight pipe out of the disposal discharge port. But, back then, it was easier to use what I had at hand; also, was also trying to optimize the useful storage space under the kitchen cabinet. The sharp sweep (short radius) of the 90d elbow connecting the disposal to the vertical pipe does not favor easy flow. Also, I am not sure if the cap is acceptable in this situation.

Any input on how to rectify that would be appreciated.
You should replace the sharp bend coming out of the disposal with a more gradual slope pipe, and swap out that T-joint with the cap for proper sink drain fittings. This will help prevent clogs and make everything flow better, while meeting proper plumbing standards. The rest of your setup with the P-trap looks fine.
 
Back
Top