Issue With Water Abruptly Shutting Off!

 
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Old 12-07-2017, 10:56 PM   #1
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Issue With Water Abruptly Shutting Off!


Hi fellow Plumbers. I ran across an issue today that I am at a loss of words for. The issue is that half of the house has low hot water pressure and the other half is fine. This is also poly pipe.

When I turn on the hot water on the left side of the house (ie. kitchen sink, bathroom faucet, shower), it runs fine for about 7 seconds and then gets hit with a small shock and hot water flow is reduced to a third. The 7 seconds is further reduced if I keep turning it off and on. After a few immediate on and offs, itís all low water pressure until leave it off for a few minutes.

The right side of the house works completely fine. Itís almost like something is clogged in the pipe on the left side. The water is all coming from the same water heater.

Any ideas!?!?! Iíve been pulling my hair out.
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Old 12-08-2017, 07:56 AM   #2
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Re: Issue With Water Abruptly Shutting Off!


Pro advice starts at tree fiddy !

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Old 12-09-2017, 11:07 AM   #3
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Re: Issue With Water Abruptly Shutting Off!


Draw a plan/diagram of your hot water pipes, the issue is After they split right and left, and BEFORE they split further on the bad side.

If it is "Pex" look closely at the distribution plenum(s)

WAGs 1.0 A bad check valve
2.0 some type of plastic Foreign matter in the hot pipe.....
3.0 A bad pressure regulator?
4.0 A partially crushed or KINKED(poorly installed, here is big money ) pipe that collapses when water flows/ pressure drops.

You could temporary install a garden hose (Hot water rated) if you hook it to a hot sillcock(Laundry faucet?,) between a sink or shower faucet with a hose adapter, then turn on the hot water at that sink, and see if all other fixtures flow "normally"

Good luck,

Post back please with the answer......

Last edited by Fouthgeneration; 12-09-2017 at 11:14 AM.
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Old 12-09-2017, 11:57 AM   #4
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Re: Issue With Water Abruptly Shutting Off!


Quote:
Originally Posted by Tcnjay View Post
Hi fellow Plumbers.
Sounds like you should hire a plumber

I can think of more than a few things. Backflush the system into a bucket, map it out, test every faucet in the house, start visually inspecting the system. Start asking questions to the builder/plumber. Is this a new house? Was work recently done to it? Was everything working fine, then all of a suddenly this became an issue?
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Old 12-09-2017, 01:47 PM   #5
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Re: Issue With Water Abruptly Shutting Off!


Quote:
Originally Posted by kirkdc View Post
Pro advice starts at tree fiddy !
It's almost 2018, Shouldn't we consider a price increase?
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Old 12-09-2017, 04:41 PM   #6
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Re: Issue With Water Abruptly Shutting Off!


bladder on a bang cartridge blown & being sucked into main feed?
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Old 12-09-2017, 08:25 PM   #7
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Re: Issue With Water Abruptly Shutting Off!


Pipe wall delamenation.

Tom
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Old 12-09-2017, 10:11 PM   #8
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Re: Issue With Water Abruptly Shutting Off!


I'd order a colonoscopy
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Old 12-10-2017, 10:31 AM   #9
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Re: Issue With Water Abruptly Shutting Off!


Quote:
Originally Posted by B.Johnson View Post
It's almost 2018, Shouldn't we consider a price increase?
Tree fiddy plus expenses
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Old 12-10-2017, 11:20 AM   #10
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Re: Issue With Water Abruptly Shutting Off!


TJBNWI: I think you meant "de-lamination" the composite tube of the pipe separating into its components, 'De-lamentation', removal of grief? Or 'delamenation' the end of a country being pitiful?
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Old 12-10-2017, 11:52 AM   #11
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Re: Issue With Water Abruptly Shutting Off!


Quote:
Originally Posted by Fouthgeneration View Post
TJBNWI: I think you meant "de-lamination" the composite tube of the pipe separating into its components, 'De-lamentation', removal of grief? Or 'delamenation' the end of a country being pitiful?
If I get a vote I'm going with delamenation. Can we make it a poll?
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Old 12-10-2017, 12:04 PM   #12
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Re: Issue With Water Abruptly Shutting Off!


Quote:
Originally Posted by Fouthgeneration View Post
TJBNWI: I think you meant "de-lamination" the composite tube of the pipe separating into its components, 'De-lamentation', removal of grief? Or 'delamenation' the end of a country being pitiful?
Wow---somebody does read my posts. I had to close the spell check to pull that off.

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Old 12-10-2017, 01:14 PM   #13
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Re: Issue With Water Abruptly Shutting Off!


It's really a pretty good post as I've run into these types of situations in the past.

You really have to play detective, eliminate things and isolate it.

It could be several things as well, not just one.
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Old 12-13-2017, 10:32 AM   #14
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Re: Issue With Water Abruptly Shutting Off!


Update everyone! I went up into the attic and see that the line coming from the water heater splits. One line goes to the middle of the unit (working bathroom) and the other feeds the left side of the unit (clogged side). It goes down into the ceiling from the attic so I am unsure where it starts to T to each fixture. There are 3 fixtures involved with the clog side. A bathroom (faucet and shower) and a kitchen sink.

I did find out additional detail through messing with it.

1) I hear a thud sound coming from behind the bathroom sink when the clog happens.
2) If I leave any fixture on after the clog happens, the other 2 fixtures work fine. It seems like the clog traps the object so it doesnít block the rest.

I am planning on getting a thermal camera to see how the piping is laid out in the unit so I am not randomly opening up ceilings and walls. Any other suggestions to solving this problem?
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Old 12-13-2017, 10:49 AM   #15
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Re: Issue With Water Abruptly Shutting Off!


Any access panels?

Last edited by kirkdc; 12-13-2017 at 11:17 AM.
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Old 12-13-2017, 10:55 AM   #16
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Re: Issue With Water Abruptly Shutting Off!


No access panels. The bathroom and kitchen are separated by a common wall. On the kitchen side are the cabinets which I would hate to start tearing down.
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Old 12-13-2017, 11:01 AM   #17
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Re: Issue With Water Abruptly Shutting Off!


What type of water lines do you have ? copper, galv? etc ?


BTW, I'm no licensed plumber-man so proceed with caution.
-------------------------------
you quoted :
1) I hear a thud sound coming from behind the bathroom sink when the clog happens.
2) If I leave any fixture on after the clog happens, the other 2 fixtures work fine. It seems like the clog traps the object so it doesn’t block the rest.
----------------------


1. The thud is just a line banging around due to pressure changes. Sometimes lines don't get archored down properly when installed or then bang off of the holes that were bored out in the studs.

2.Interesting. Hmm. The plot thickens. Is this YOUR house ? or a HO ?

Last edited by kirkdc; 12-13-2017 at 11:30 AM.
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Old 12-13-2017, 11:24 AM   #18
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Re: Issue With Water Abruptly Shutting Off!


Right I agree. Could not be the problem area. The piping is the old pex/quest piping.

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