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Author:
dlh (TX)
have a house with a slab leak on a hot line. by-passed it and now have no pressure from any cold faucet in the house but good hot pressure. did not touch the valves at the house just at the meter.
any ideas?
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PLUMBERS "Protecting The Health Of The Nation"
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Author:
caja715 (Non-US)
any chance a faulty faucet is back feeding hot to the cold side? Im guessing by slab leak your not talking infloor heat?
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Author:
Fixitangel (NC)
Did the bypass operation involve jack-hammering the slab? Is there any cold water service besides the heater supply at all? If it's NO pressure, Strange problem. A gremlin came along and closed a valve?
Start at the cold T to the heater and trace it downstream.
Don't forget your glasses.
Edited 1 times.
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Author:
hj
BAack feeding would give hot water instead of cold, but would NOT reduce the pressure in the ocld side. In face, it could increase it.
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Author:
Paul48 (CT)
Sounds like it wasn't the hot leaking, strange as that sounds.
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Author:
Nevada Plumber (NV)
I have been on jobs before that when the main water was turned off, sediment from the bottom of the water heater got into the cold water piping. When the water was then turned back on, it blew through the cold water piping and clogged up the line.
It can happen with a top fed water heater, but is much more likely to happen with a bottom inlet water heater.
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Author:
dlh (TX)
this was not a house i was working on but an aquaintence was. i told him the only way i can see it happening is if they split the lines before going under the house and the cold side got plugged. the guy called me back the next day and said that the cold started working again after his helper turned the heater valve all the way on. i have no clue why that would have been the problem
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PLUMBERS "Protecting The Health Of The Nation"
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Author:
cheleway (TX)
It's either clogged or you've got another slab leak on the cold side. I've seen dozens of slab leaks where lines are running parallel and one get's a leak spraying onto the other, weakening the line.
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