Fernco on Sink Tailpiece to PVC Trap

[Wraujr]

I have a dual kitchen sink, on the non-disposal side I have a 1 1/2 tailpiece that I want to connect to 2" PVC trap. The 2"PVC trap is all solvent weld in combo with disposal drain and wall outlet. There is little room and little flexibility so using a Fernco 1 1/2 x 2 ( P1056-215 / Black w/clamps) would be the easiest install.

This would all be vertical install and above the trap water level. The intent would be to have the tailpiece extend into the 2" PVC so in theory water never really "touches" the Fernco.

Would this be an acceptable practice?

 

[Terry]

Fernco's are fine with water. It works.

 

[Sponsor]

 

[Reach4]

https://www.fernco.com/products/flexible-couplings/stock-couplings#tid-186
I think the Fernco piece you are considering at was made to connect 2 inch pipe to 1.5 inch pipe, and that has an OD bigger than 1.5 inches. A 1.5 inch tailpiece is actually 1.5 inches OD.

I would measure your trap connection end too. I don't know if that end is in tubing size (actual OD) or pipe size (OD is bigger).

 

[Wraujr]

Yes, your are right about carefully checking dimensions. The lower 2" OD PVC is 1 1/2" DWV PVC and the OD of the tailpiece was around 1.5", a little less than the 1.66" OD of 1 1/4" DWV PVC. So the correct Fernco I would try is P1056-150/125 and I expect the tailpiece might be a little loose and this might not work well. Thanks for pointing out the dimensional issues. Will dry fit the parts in the store.....