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 Tub drain slip joint stuck
Author: DaveTu (FL)

Hi.

New to this forum, but really need some help here....doing a home project for the wife...replacing old cast iron tub with new tub, redoing entire bathroom....I have broken up the old cast iron tub and am trying to replace the drain piping now....will be installing a cast iron claw foot tub....I need to get the old drain piping out....I have removed the tar, dug out some dirt...and have gotten the PVC slip joint nut loose but I cannot budge the brass pipe going down into the slip joint...I have tried using pipe wrenches and afraid I am going to break something that I will really regret...any secrets like heating the brass slightly or using TNT or ???? really need help on this one....not a plumber,,just trying my best....thanks pic below

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 Re: Tub drain slip joint stuck
Author: dlh (TX)

your pipe wrench is around the riser from the trap. if that is where you have been trying to get the waste/overflow out then that is your problem.

it is most likely just stuck really good from all the years of use and expansion and contraction of the materials

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PLUMBERS "Protecting The Health Of The Nation"

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 Re: Tub drain slip joint stuck
Author: DaveTu (FL)

I agree....like I said,,,the nut just above the pipe wrench is loose, and I want to take out the metal piece above to replace with new....but it wont budge and I am afraid that I will break the PVC stuff below....any suggestions....thanks

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 Re: Tub drain slip joint stuck
Author: dlh (TX)

nope. it should come out by twisting and turning while pulling up. it just might take a few tries

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PLUMBERS "Protecting The Health Of The Nation"

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 Re: Tub drain slip joint stuck
Author: DaveTu (FL)

Yes...agree again.....thanks for the input....I guess I'll just keep trying...

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 Re: Tub drain slip joint stuck
Author: hj (AZ)

The outside of the brass tubing has corroded and expanded which has made it too tight to come out easily. If it will not turn, which is probably the case, you can unscrew the tee from the tubing, and then very carefully cut the tubing out of the PVC riser.

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 Re: Tub drain slip joint stuck
Author: DaveTu (FL)

thanks for that input....I will take a look at that.....not sure of how to cut the tubing out of there....but it all helps.....will def. give it a try....

thanks again.

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 Re: Tub drain slip joint stuck
Author: hj (AZ)

Cuting it out would be easier if it were a metal pipe instead of PVC, because you could damage the PVC if you do not do it carefully and properly.

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 Re: Tub drain slip joint stuck
Author: HytechPlumber (LA)

Do you know if the new tub will work with the existing drain pipe location ?

You are doing right by not placing any heavy force on the pvc pipe.

You may have to dig down another 6" or so to see if you can find an area to cut the PVC pipe where you can glue a new adapter or coupling, (or both)

It would be better to do a controlled cut than breaking the pipe further down.

Sometimes when installing a new tub the pipe may need to be located a few inches more away from the wall. If that were the case than you may have to dig it down futher to install a couple st. 45's on the riser.


"Plan your work" then "Work your plan."


......................... Good Luck

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 Re: Tub drain slip joint stuck
Author: AW Plumb (SC)

Hytech said it best.. dig it down a little bit further and cut the pvc a little lower (if there is enough riser from the trap).. First I would cut the brass off a couple of inches above the top of the adapter, then put my tape inside the pipe to see how deep the the riser is.. if you have enough room go ahead and lop off (using fine metal blade in reciprocating saw OR cable saw) the section with the old brass tub drain.. Or you could continue to wiggle and grunt trying to wrestle it out.. either way, Best of luck!

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