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Author:
ericsandstone (TX)
Delta valve installed. The symptom is handle letting cold out results in small leak from showerhead. As handle moved toward hot, more water comes out of shower. This is with spout to shower plunger in tub position.
Tried flushing through shower arm sans showerhead. Nope.
Took cartridge out, flushed housing, examined cartridge, housing for debris. Zilch and...Nope.
Applied plumbing grease to all rings. Nope.
A dripping spout is what led to this man buying a new valve.
This house just got all new piping. Galvanized gone. Pex in.
Noticed hose bib nearest where the water supply comes in runs with strong pressure.
Thoughts amongst our crew:
Bad new valve.
Two Water heaters need expansion tank/s.
Whole house pressure reducing valve.
Edited 2 times.
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Author:
steve (CA)
Is there Pex installed between the valve and the tub spout? If yes, what diameter Pex?
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Author:
bsipps (PA)
That sounds like the issue
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Author:
bernabeu (SC)
1/2 PEX = 3/8 nominal IPS (due to the internal fittings) resulting in 'back pressure' to the shower head
y'all need to repipe spout as per manufacturer's directions
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
bruceb3 (MI)
It should have 1/2" copper between the valve and spout. More rigid and not restricted. As a side nte, you should use silicone grease on rubber and plastic parts. Yellow plumbers grease should only be used on metal to metal parts. Yellow plumbers grease is a petroleum product and will break down rubber o-rings and seals. Silicone grease wont affect them.
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Author:
hj (AZ)
You had incompetent plumbers who do NOT know how to follow the manufacturer's instructions, since they ALL say NOT to use PEX, or CPVC between the valve and the spout.
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Author:
ericsandstone (TX)
Thank you. Both items very good to know.
Edited 1 times.
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Author:
ericsandstone (TX)
It just keeps getting more interesting.
When I mentioned the finding about restricted area of pex between spout and valve, manufacturer instructions and all; one of the higher ups came back with -
"We've never had this back pressure before from any other repipe jobs using 1/2" pex between spout and valve."
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Author:
bernabeu (SC)
a workmanlike, aka proper, PEX supply tube bath valve install:
note the COPPER attached to the fixture top AND bottom for proper flow and 'rigidity'
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
Edited 1 times.
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Author:
ericsandstone (TX)
I like it. Done right.
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Author:
packy (MA)
"'rigidity'" ???????
a copper elbow at the tub spout ??
must (i repeat) must be a drop eared 90 screwed to a piece of wood!!
in my humble opinion..... shoemaker job..
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Author:
bernabeu (SC)
correct ... as usual
BUT
pic for example only
==============================================
"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
ericsandstone (TX)
I prefer to drop a drop ear at both the showerhead arm snd spout locations eith a 2 x 4 as the backer for rigidity.
Edited 1 times.
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Author:
bernabeu (SC)
==============================================
"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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