Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-28-2006, 10:15 AM   #1
reluctant handyman
 
diggitydog's Avatar
 
Join Date: Aug 2006
Location: Minneapolis, MN
Posts: 20
Rewards Points: 10
Default

leaking p-trap after replacing


Hi,

I'm a DIY kind of guy that does light projects around the house. This weekend I replaced a p-trap in a bathroom that had a cracked nut. It is a heavier 2 piece black PVC 1 1/2" trap which is a little different than the white plastic ones I'm used to. I simply purchased a new 2 piece p-trap and mated the old male treaded portion of the trap (which is cemented in place to the outgoing pipe) to the new female portion of the trap which includes the new nut.

When I tightened the nut and turned on the water, the trap began to leak at the joint of the old and new sections. Aren't these supposed to be universal? They seem like they should mate up without any problem.

Am I supposed to apply putty to the joint where the groove lines up with the wedge on the other piece? It seems to me that that type of wedge joint should seal with compression only, but I'm not sure. Again, I'm not too familiar with using 1 1/2" black PVC and the joint in the trap is new to me. Any other ideas as to how I can stop this leak?

Thanks,
Dave

diggitydog is offline   Reply With Quote
Old 08-28-2006, 05:39 PM   #2
Home Improvement Guy
 
ron schenker's Avatar
 
Join Date: Jan 2006
Location: ontario, canada
Posts: 351
Rewards Points: 250
Default

leaking p-trap after replacing


I'm not a plumber butt, the "black pvc" is actually "ABS" and should work ok if you threaded it on properly(no cross threads)
I'm curious as to why you didn't replace the old P-trap with an original type pvc one.
You could try to wrap some teflon tape around the threads for a better seal
I'm sure a plumber will chime in soon

ron schenker is offline   Reply With Quote
Old 08-28-2006, 06:19 PM   #3
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Rewards Points: 1,000
Default

leaking p-trap after replacing


Apply some pipe dope to the threaded part, should fix the leaking.
Ron The Plumber is offline   Reply With Quote
Old 08-29-2006, 10:31 AM   #4
reluctant handyman
 
diggitydog's Avatar
 
Join Date: Aug 2006
Location: Minneapolis, MN
Posts: 20
Rewards Points: 10
Smile

leaking p-trap after replacing


Ron Schenker and Ron the Plumber,

Thank you both for your replies.

Thanks for the clarification on the ABS. Being a complete novice I assumed all plastic was classified as PVC.

I replaced it with the ABS because that is what was previously there. I simply went to the home improvement center and matched up the 1 1/2 ABS trap with the one I brought from home.

I had already tried the teflon tape on the threads and that did not work. There was also no cross threading. I tried the connection several times with various amounts of tape and compression. Everytime, it continued to leak.

What did work is the TFE universal thread dope. I applied the dope to the male "wedge" portion of the 2 piece trap, not the threads. This time, when the male wedge slipped into to the female groove of the other piece, whatever gap was previously there, filled with dope.

So far no leaks!

Thanks again for your replies,
Dave
diggitydog is offline   Reply With Quote
Old 08-29-2006, 07:51 PM   #5
The Flying Toolbox
 
handypilot's Avatar
 
Join Date: Jul 2006
Location: Appleton, WI
Posts: 28
Rewards Points: 25
Default

leaking p-trap after replacing


Quote:
Originally Posted by diggitydog
I had already tried the teflon tape on the threads and that did not work. There was also no cross threading. I tried the connection several times with various amounts of tape and compression. Everytime, it continued to leak.
For future reference, Teflon tape works well for some fittings, but not plastic. Always use pipe dope for plastic connections. Now that you've found TFE pipe dope, you won't use anything else...it's good for all applications!

Last edited by handypilot; 08-29-2006 at 10:51 PM.
handypilot is offline   Reply With Quote
Old 11-21-2011, 01:20 PM   #6
Newbie
 
Join Date: Nov 2011
Location: Oregon
Posts: 2
Rewards Points: 10
Default

leaking p-trap after replacing


I have had this problem several times with new ABS p traps. I tried tape on the threads, pipe dope, severe tightening and what finally worked was Teflon tape not on the threads but on the cone shaped part that fits in the groove. I`ve learned that is where the sealing occurs, not at the threads. What a relief when it finally stopped leaking.
philodog is offline   Reply With Quote
Old 11-21-2011, 09:55 PM   #7
Developer by Day
 
Join Date: Feb 2008
Location: Harrisburg, PA
Posts: 33
Rewards Points: 25
Send a message via AIM to KevinACrider
Default

leaking p-trap after replacing


Wow, you bumped a 5 year old thread. But I'm glad you did, I have this EXACT problem right now! The nut is wrenched tight and it still leaks. Once I get it off I want it done for good. What is the best solution for sealing up the groove area?
KevinACrider is offline   Reply With Quote
Old 11-22-2011, 12:14 AM   #8
Newbie
 
Join Date: Nov 2011
Posts: 22
Rewards Points: 10
Default

leaking p-trap after replacing


Rectorseal tplus2
Service plumber is offline   Reply With Quote
Old 11-22-2011, 06:00 AM   #9
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,863
Rewards Points: 2,374
Default

leaking p-trap after replacing


Always run you finger over the mating surfaces before you install---occasionally there id a burr or bit of casting flash---scrape that off with a knife and you avoided a leak.
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is online now   Reply With Quote
Old 11-22-2011, 09:31 AM   #10
Developer by Day
 
Join Date: Feb 2008
Location: Harrisburg, PA
Posts: 33
Rewards Points: 25
Send a message via AIM to KevinACrider
Default

leaking p-trap after replacing


Mike, I did make sure there were no burrs, but I think the joint just did not make a solid seal all the way around. I have a very small drop on the inside of the P and was hoping I could use plumbers putty, some caulk or some other sealant to put in between the joint to fill any voids. I only want to do this once, and with whatever material I use being permanent, I need to do it right the first time.

Service Plumber, I will look into the Rectorseal T+2 and see what I can find.
KevinACrider is offline   Reply With Quote
Old 11-22-2011, 10:39 AM   #11
Newbie
 
Join Date: Nov 2011
Location: Oregon
Posts: 2
Rewards Points: 10
Default

leaking p-trap after replacing


Hi Kevin
Anytime I find a solution to a problem that has driven me crazy I post it online to appropriate forums so others searching for a solution to the same problem might come across it. My way of adding to the wonder of the internet. If you haven`t already done so try the teflon tape on the joint. I wrapped it six times or so around the cone shape and didn`t put anything in the groove. It worked instantly for me on two different sinks that were leaking. Let us know if it worked.
philodog is offline   Reply With Quote
Old 11-24-2011, 10:40 AM   #12
Developer by Day
 
Join Date: Feb 2008
Location: Harrisburg, PA
Posts: 33
Rewards Points: 25
Send a message via AIM to KevinACrider
Default

leaking p-trap after replacing


I appreciate your suggestions, I am just hesitant to go with the teflon tape solution as I fear it may not prove the test of time. I've had great success with teflon tape on threads but I think there has to be a better way.

I talked to a local plumber who suggested filling the notched half with sillicone sealant before putting it back together and letting it fully set before running waer through it. Any thoughts or opinions on this or would plumbers putty be a better route to go?
KevinACrider is offline   Reply With Quote
Old 11-24-2011, 10:54 AM   #13
moderator
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: North Idaho
Posts: 7,037
Rewards Points: 2,260
Default

leaking p-trap after replacing


Quote:
Originally Posted by KevinACrider View Post
I appreciate your suggestions, I am just hesitant to go with the teflon tape solution as I fear it may not prove the test of time. I've had great success with teflon tape on threads but I think there has to be a better way.

I talked to a local plumber who suggested filling the notched half with sillicone sealant before putting it back together and letting it fully set before running waer through it. Any thoughts or opinions on this or would plumbers putty be a better route to go?
I have the best luck with a teflon based pipe dope. Apply a coating to the mating surfaces- to help fill any small voids. And a small amount to the male threads- for lubrication, helps break the friction while tightening. When testing for leaks use hot water and tighten nut if it drips. If trap still drips - buy a new one.
TheEplumber is online now   Reply With Quote
The Following 2 Users Say Thank You to TheEplumber For This Useful Post:
ben's plumbing (11-24-2011), KevinACrider (11-27-2011)
Old 11-24-2011, 11:42 AM   #14
Member
 
Join Date: Oct 2011
Location: pa
Posts: 4,437
Rewards Points: 2,188
Default

leaking p-trap after replacing


yes yes teflon pipe dope on the two surfaces.....and a big yes test with hot water because it causes it to expand if small leak tighten up if still leaks ....replace trap......
ben's plumbing is offline   Reply With Quote
The Following User Says Thank You to ben's plumbing For This Useful Post:
KevinACrider (11-27-2011)
Old 11-26-2011, 01:05 PM   #15
Member
 
Join Date: Aug 2011
Location: Washington, DC area
Posts: 83
Rewards Points: 75
Default

leaking p-trap after replacing


Compression fittings never work for me, long-term. It's better to get one of those rubber P-traps that just hose-clamp to the drain pipes.

huesmann is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ball valve leaking bwall Plumbing 10 12-31-2012 07:25 PM
Leaking Condenation Trap - Bryant falcon HVAC 9 04-01-2009 06:17 PM
water leaking from pressure balance spool lauralyn1 Plumbing 16 08-13-2007 04:50 PM
Attic A/C Unit Condensate Trap bardad1022 HVAC 3 06-25-2007 07:30 PM
leaking bathtub mikeynholly Plumbing 1 02-11-2007 01:50 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.