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Thread: No Hot Water Pressure...

  1. #1
    DIY Junior Member Chuck Elliott's Avatar
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    Default No Hot Water Pressure...

    A few days ago, I replaced the pressure release valve on my 5 year water heater. The seals in the old valve had worn out. The house is over 200 years old and the pipes are very old as well (don't know the age).

    After bleeding my lines, I noticed I had no hot water pressure going to my kitchen sink. It was the only faucet in the house I had no pressure. I checked the faucet, but nothing was clogging it there.

    I read online that I should wait a few days for the rust and sediment in the line to dry up and then re-bleed the lines again (after emptying the water heater). I did that. After bleeding the lines, I now have no hot water pressure anywhere in the house.

    The cold water pressure is fine throughout the house.

    What could be causing this?

    How can I fix it?

    Thanks!
    Last edited by Chuck Elliott; 12-18-2011 at 03:18 PM.

  2. #2
    DIYer, not in the trades LLigetfa's Avatar
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    Default

    Chances are the HWT has anti-percolation valves and they probably got gunked up with sediment.

  3. #3
    DIYer, not in the trades LLigetfa's Avatar
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    I should stop calling it that and call it what much of the industry does, namely heat trap nipples.

  4. #4
    DIY Junior Member Chuck Elliott's Avatar
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    Do I need to call in a plumber for the heat trap nipples? Or can it be a DIY project?

  5. #5
    Test, Don't Guess! cacher_chick's Avatar
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    If you are capable of removing the piping from the top of the water heater, you are probably capable of removing the heat traps.

  6. #6
    Moderator & Master Plumber hj's Avatar
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    Default

    quote;
    Chances are the HWT has anti-percolation valves and they probably got gunked up with sediment.

    If so, it is probably the ONLY heater in the world with "antipercolation VALVES", (not heat trap nipples which would be something entirely different). Check the water heater valve, it could have broken when you turned it off and then back on.
    Last edited by hj; 12-19-2011 at 05:14 AM.
    Licensed residential and commercial plumber

  7. #7
    Retired Defense Industry Engineer jadnashua's Avatar
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    Gate valves failure mode is to have the gate break off from the shaft of the handle. So, then, you can't really retract the gate. It's possible you have galvanized nipples or heat traps, and those can corrode or the trap valve stick. If you open the drain valve on the tank, does any water come out?
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  8. #8
    DIY Junior Member Chuck Elliott's Avatar
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    Thanks, everyone for responding. Turns out it was just sediment in the lines.

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