Kitchen P-Trap Help Needed

[waterpark]

I need help selecting the proper hardware to replace this leaking kitchen sink P-trap and installation tips. None of the YouTube videos I've seen match this installation. I've been to Home Depot and Lowes, and the many hardware options are confusing. Any help, including links for products, installation, etc. will be welcomed!

 

[Twowaxhack]

Cut the pvc pipe and install one of these.

You’ll also need some pvc solvent to glue the adapter onto the pvc.

https://www.homedepot.com/p/Oatey-H...V-97jBx1_ngmBEAQYBCABEgJ4gfD_BwE&gclsrc=aw.ds

 

[waterpark]

Cut the pvc pipe and install one of these.

You’ll also need some pvc solvent to glue the adapter onto the pvc.

https://www.homedepot.com/p/Oatey-H...V-97jBx1_ngmBEAQYBCABEgJ4gfD_BwE&gclsrc=aw.ds

Thanks very much! How far back should I cut the existing PVC pipe?

 

[Twowaxhack]

Where the (2”) is printed on the pipe. Cut through the “

Yes I know the pipe is 1-1/2”

 

[waterpark]

Where the (2”) is printed on the pipe. Cut through the “

Thank you so much! I’m still not clear about how to make the connection to the existing PVC and where to apply the solvent. Also should I use a hack saw or a PVC cutter? Again, thanks so much for your help!

 

[Twowaxhack]

You can use a hacksaw. Just go slow and keep the cut straight. You could apply some tape perfectly straight and use it as a guide.

The new ptrap has an adapter that will slip over the 1.5” pvc pipe after its cut.

Apply the pvc solvent to each the adapter and the cut end of the pvc according to the pvc solvent directions then push the pieces together and twist. Hold for about 10 seconds and wipe off the excess solvent. Use a drip cloth to catch the solvent drip. Don’t spill the can.

Goodluck

 

[waterpark]

Gap!

 

[TomFOhio]

You need to cut the pipe back farther. Cut it between the symbol and the 1/1/2. Where you have the pipe stuck in the pipe, you
need to glue on the trap adaptor that twowax showed you in the picture he sent.. Then you can stick the pipe in and you'll have a nut
and washer to tighten down.

 

[Twowaxhack]

Gap!

View attachment 40514

Cut it back farther and use the trap adapter that glued onto the pipe. Cut another 3” off the 1.5” pvc

 

[TomFOhio]

Watch the video on the home depot site that you were sent to look at.

 

[waterpark]

Cut it back farther and use the trap adapter that glued onto the pipe. Cut another 3” off the 1.5” pvc

Thanks! I didn't need to cut it back. I got an extender for the garbage disposal connection. Everything's tight, secure, and glued to the wall pipe. Will check for leaks in a bit.

 

[Rickyman]

...

 

[Rickyman]

...

 

[Twowaxhack]

Thanks! I didn't need to cut it back. I got an extender for the garbage disposal connection. Everything's tight, secure, and glued to the wall pipe. Will check for leaks in a bit.

View attachment 40515

I’m so stupid I didn’t even see the pipe was short from the disposal. You did exactly right by using a slip joint extension. Good job.

 

[waterpark]

I was getting some leaking from this connection. I added the thicker washer at the end of the p-trap, and that seems to have fixed it. Will keep an eye on it.

 

[MicEd69]

I was getting some leaking from this connection. I added the thicker washer at the end of the p-trap, and that seems to have fixed it. Will keep an eye on it.

View attachment 40517

It will probably be OK, but you should have done what Twowaxhack said, "Cut it back farther and use the trap adapter that glued onto the pipe. Cut another 3” off the 1.5” pvc." Having a longer trap arm allows the threaded connections to flex as needed. That short trap arm appears to be binding such that the gasket doesn't seat perfectly. Something to learn for future fixes, or the fix for this one if it continues to leak.

 

[waterpark]

It will probably be OK, but you should have done what Twowaxhack said, "Cut it back farther and use the trap adapter that glued onto the pipe. Cut another 3” off the 1.5” pvc." Having a longer trap arm allows the threaded connections to flex as needed. That short trap arm appears to be binding such that the gasket doesn't seat perfectly. Something to learn for future fixes, or the fix for this one if it continues to leak.

It's not leaking and the trap adapter is glued to the pipe.

 

[MicEd69]

It's not leaking and the trap adapter is glued to the pipe.

It is good that it is not leaking.

And I understand that the trap adapter is glued to the pipe.

My point is that the trap arm that goes into the trap adapter is quite short, basically just the 90-elbow part of the trap arm. You have the slip joint nut/gasket for the trap arm that could be causing stress on the P-trap nut/gasket that was leaking due to that geometry. Had you cut more off the pipe, after you glued the adapter on the shorter pipe you would have a longer trap arm that was part of the trap assembly. That would provide a little more flexibility in the trap assembly joints. Adding a thicker gasket isn't necessarily a bad thing, but again it really shouldn't be required if the assembly is installed properly.

 

[waterpark]

It is good that it is not leaking.

And I understand that the trap adapter is glued to the pipe.

My point is that the trap arm that goes into the trap adapter is quite short, basically just the 90-elbow part of the trap arm. You have the slip joint nut/gasket for the trap arm that could be causing stress on the P-trap nut/gasket that was leaking due to that geometry. Had you cut more off the pipe, after you glued the adapter on the shorter pipe you would have a longer trap arm that was part of the trap assembly. That would provide a little more flexibility in the trap assembly joints. Adding a thicker gasket isn't necessarily a bad thing, but again it really shouldn't be required if the assembly is installed properly.

Actually, the thicker gasket is required at that junction per the manufacturer, and the arm is quite long. It goes in 3/4 of the length of the adapter/pvc pipe.

 

[MicEd69]

Oops, the joint you circled as leaking doesn't have a gasket. I don't know what I was thinking. I guess when you said you installed a thicker gasket, I didn't think it through. The joint circled seals on the beveled shapes of the trap arm and the P-trap "U". If you installed a gasket there, you may have trouble in the near future.

But if you meant that the leak was coming from the trap arm to adapter fitting and that you installed the correct gasket there to fix the leak, everything is good.