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12-28-2012, 04:47 PM
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#1
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Junior Member
Join Date: Apr 2011
Posts: 28
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Hot water/heat caused plastic plumbing connecting sink drain to un-couple
Hi guys,
I turned the water heater on just the other day to notice half an hour later, water pooling up under the sink area then while drying the water, found that the plumbing that connects the sink drain's immediate next pipe has come uncoupled (possibly due to hot water or heat or a combination of the two)
What type of bonding substance should I use? On tv i see them coat plastic plubming in some sort of "liquid cement" then couple the piping together to achieve a permanent seal.
-JF
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12-28-2012, 05:16 PM
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#2
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Moderator Emeritus
Join Date: Oct 2012
Location: Cape Coral, Florida
Posts: 4,796
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JF,
I am assuming your talking about a smooth PVC or CPVC plastic union.
If it's gray pipe, I believe its CPVC and white pipe is PVC. It should say on the side also if you have a long enough length.
You need to clean it the best you can and then go to any big box and get the correct gluing compund.
They also sell a primer, I recommend that especially since it was lightly bonded before.
Just tell the guy or gal in the plumbing department that you have white or gray piping and they'll point you to the correct bonding/primer products.
Best regards,
Doug
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Cape Coral, Florida
2021 Toyota Tundra SR5, 5.7 V8
2022 Jayco 240RBS
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12-28-2012, 05:34 PM
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#3
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Junior Member
Join Date: Apr 2011
Posts: 28
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Its stark black if im not mistaken i'll try and take some pics and show you guys whats going on down there.
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12-28-2012, 06:14 PM
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#4
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Senior Member
Join Date: Jul 2010
Location: Central NY
Posts: 203
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If it is black, it should be ABS Pipe. Still should be able to pick up glue and cleaner at any hardware or home Improvement store.
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12-30-2012, 06:46 PM
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#5
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Senior Member
Join Date: Dec 2010
Location: Central PA
Posts: 1,236
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The RV plumbing in all 3 of my campers has been black.
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No I am NOT retired. I work full time.:D
Tracy from Central PA
2010 Jayco 17Z Ex-Port
2004 Ford Explorer V8 with the tow package
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Nights Camping 132 - Nights Camping in My Z 102
2011 Camping Stats
Nights Camping 107
2012 Camping Stats
Nights camping 133 - Nights camping in my Z 128
2013 Camping Stats
Nights Camping 66 Nights
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12-30-2012, 07:17 PM
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#6
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Senior Member
Join Date: Apr 2012
Location: Edmonton, Alberta Canada
Posts: 267
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Hot water/heat caused plastic plumbing connecting sink drain to un-couple
If it is ABS then the proper thing to use is Teflon tape. That will help seal the connections better and help them from coming loosened. I believe it is the vibration from going down the road. I just check mine every once in a while and give the collar a little hand snugging.
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Jeff
2012 Toyota 4-Runner SR5
2012 Jayco Jay Feather Ultra Lite 228
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12-30-2012, 07:55 PM
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#7
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Moderator Emeritus
Join Date: Oct 2012
Location: Cape Coral, Florida
Posts: 4,796
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I agree if its a threaded connection.
I thought it was a union, pics would help. :-)
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Cape Coral, Florida
2021 Toyota Tundra SR5, 5.7 V8
2022 Jayco 240RBS
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12-30-2012, 07:55 PM
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#8
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Member
Join Date: Dec 2012
Posts: 72
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Quote:
Originally Posted by Jayco 228
If it is ABS then the proper thing to use is Teflon tape. That will help seal the connections better and help them from coming loosened. I believe it is the vibration from going down the road. I just check mine every once in a while and give the collar a little hand snugging.
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Yep the connections on my old TT would work themselves loose just from travel even with teflon tape on them , just a good hand snug every trip or so.
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01-02-2013, 11:42 AM
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#9
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Senior Member
Join Date: Jun 2012
Posts: 195
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My drain pipe under the kitchen sink was loose last year (it dripped into the Rubbermaid containers for leftovers that we conveniently keep there) and I assumed it was just the vibrations and bumps that caused it to work loose. I just check it every so often to make sure it's tight.
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01-02-2013, 12:37 PM
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#10
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Senior Member
Join Date: Sep 2010
Location: New York
Posts: 2,210
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If you are talking about the p-trap pipe connection to the actual sink drain pipe you do not glue that. There is a flange that slides on the drain pipe in between the nut and p-trap that will seal upon tightening.
Unscrew the nut completely with a bucket underneath to catch the water. Apply two or three complete wraps of teflon tape on the threads and tighten it down. That should solve the drips.
If there is a leak further down the line in the drain where straight pipe and fittings with no threads are creating a connection then you need to use glue. I use the purple PVC primer and glue.
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