Help Identify this Part

[abacus822]

I just purchased this:

KOHLER Canada: K-R13492-4: Kelston® Rite-Temp® pressure-balancing bath and shower faucet trim:

Kohler bath and shower fixture set for updating old bathtub/shower fixtures. I was able to remove the tub spout very easy, it just screwed off. I found a plastic pipe (threaded end) that extended out from the wall and it got very thick as it got closer to the wall (it looked like there was a copper pipe underneath it). I removed this "covering" to find a copper coupling?? underneath. I am really not sure what this piece is and all of the websites I go to for images of "fixtures" do not show me the same shape as the attached image. It appears "dumbell" shaped with a threaded end (which the plastic covering pipe screwed onto) that hooks to the wall pipe and the other end has an O-Ring with a 3/4" opening (this end has no threading inside or out). Please Help!!

I would like to be able to install a .25" nipple coming out of the wall 5" like the instructions indicate but I am not sure how to do it in this case.

Any help on this matter is greatly appreciated.

 

[SlowDrip]

That piece goes inside of your tub spout (it usually comes pre-inserted when you buy a kohler unit), the side towards the wall is threaded to attach to a standard 1/2" MIP (as your picture shows). It should simply unscrew, although from the looks of it it may be gummed up with calcium deposits.

 

[abacus822]

Slow Drip,

Thanks so much for your help! I tried to unscrew it before but it seems very hard to budge and I didn't want to damage an pipes before I knew what it was. I will look into getting something like liquid wrench to help remove it. If you have any suggestions beyond some good old fashion elbow grease please let me know.

 

[SlowDrip]

You are on the right track with getting something to loosen it up, any penetrating oil should do the job. In a pinch even white vinegar will help.