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Very little water flow from any ‘hot’ tap in the house

Discussion in 'Plumbing and Central Heating' started by bri160356, 18 Dec 2015.

  1. bri160356

    bri160356

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    Very little water flow from any ‘hot’ tap in the house i.e. bath tap, bathroom sink tap and kitchen tap; just a slight flow that stops after a minute or so. Been working fine but virtually stopped flowing this morning.

    The house has a conventional vented CH system with a cold water storage tank in the loft and a hot water cylinder (with immersion heater) in the airing-cupboard.

    The 22mm outlet feed pipe from the loft tank to the hot water cylinder isn’t blocked at the loft tank end; had a thin copper rod down a few inches and a had wriggle about ,but no joy.

    Any thoughts where the most likely blockage point will be? I’m assuming (maybe wrongly) that debris of some description has entered the system.

    All advice gratefully received.

    Edit: title wording corrected
     
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  3. HERTS P&D

    HERTS P&D

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    Air lock.

    See below:



    Andy
     
  4. stardanny

    stardanny

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    Have you check the gatevalve is fully open?

    Possible ran out of water at loft tank so there is airlock.

    Daniel.
     
  5. bri160356

    bri160356

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    Hi, the gate valve between the loft tank and the hot water cylinder hadn't been touched prior to the problem but it appears to be functioning properly anyway.

    If it is an air-lock,.... then where-abouts in the pipework run would such an air-lock likely be?
     
  6. bri160356

    bri160356

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    OP here; many thanks for the replies..

    I’ve just found out that the loft water tank also supplies the ‘cold feed’ to the bathroom power-shower; .....so maybe the loft tank did run dry and an air-lock has been introduced ??
     
  7. TCCHeating

    TCCHeating

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    In your first post it says edit: fixed

    Did you not fix the problem? I'm a bit confused as to whether you still have a problem

    If not fixed you need to push the air lock out with mains pressure. Have you watched the video posted?
     
  8. bri160356

    bri160356

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    The word ‘fixed’ was introduced by the mods; as soon as I saw it I thought it would cause confusion. o_O

    I left a footnote on my thread starter to say that I’d misspelt a word in the thread title; the mods fixed my ‘title’ mistake and overwrote my footnote with the word ‘Fixed’....; done with every best intention but maybe not the 'mods' best choice of word to be honest!

    To answer your question my friend,...not fixed as yet. I’ve watched the video; ...to reiterate ,I’ve just found out that the loft water tank also supplies the ‘cold feed’ to the bathroom power-shower; .....so maybe the loft tank did run dry and an air-lock has been introduced ??

    Will regroup tomorrow a.m. Thanks for your reply.

    P.S. edit: just noticed that the mods have just this minute removed the word ‘fixed’. :LOL:
     
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