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Loss of pressure in upstairs hot water

Discussion in 'Plumbing and Central Heating' started by JayW2019, 20 Oct 2019.

  1. JayW2019

    JayW2019

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    Hi all. First time posting, although I’ve always found this forum really helpful and it’s helped out a lot in the past.
    Anyway...

    Last week I replaced our kitchen mixer tap. While doing this, I shut off the mains supply. There was still a solid trickle of water so I tried turning off the hot water on our Hive, and ran the upstairs taps. This seemed to do the trick and I was able to replace the tap without too much fuss.

    However, since then the hot water upstairs has been much lower, most noticeably when running the mixer shower. The cylinder pressure looked like it had dropped to around 0.5 bars so I topped back up to 2 using the filling loop. This didn’t seem to make any difference though and the showers are still very weak.

    Any suggestions?

    (We’re in a three storey house, around 6 years old. Our system has a cylinder and expansion tank in the first floor airing cupboard and a boiler in kitchen).

    thanks in advance everyone
     
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  3. terryplumb

    terryplumb

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    Bit confusing ,is your hot water cylinder pressurised ? What is the expansion tank feeding ? Or are you referring to an expansion vessel ?
     
  4. JayW2019

    JayW2019

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    I’m probably referring to a vessel. Sorry, I’m a bit clueless in all this. Pic attached.
     
  5. CBW

    CBW

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    What’s the cold like upstairs?
     
  6. JayW2019

    JayW2019

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    I’ve just checked and the cold is running quite slow too.
     
  7. CBW

    CBW

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    Probably going to be your stopcock then. Will it open any more?
     
  8. JayW2019

    JayW2019

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    Aha! Can’t believe I missed that. Yes, it was only part open. Now flowing perfectly. Thanks mate, you’re a star!
     
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