1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Uneven Pressure

Discussion in 'Plumbing and Central Heating' started by johnberman, 10 Mar 2014.

  1. johnberman

    johnberman

    Joined:
    26 Feb 2014
    Messages:
    19
    Thanks Received:
    0
    Location:
    Surrey
    Country:
    United Kingdom
    I did post before but was not very clear so here goes. Have moved into a new house and the plumbing is like this.

    Boiler in kitchen, immersion heater first floor, massive tank in loft which seems to have cold water in it and small tank in loft with hot water in it.
    Central heating and hot water and cold all work as expected.
    It's the shower that's the issue, if in the bath I get the mix right and then lift the plunger for the shower the water is cold, so you virtually have to turn off the cold but then the pressure out of the shower head is awful. It seems like the cold water pressure overwhelms the hot ? I can't seem to find a way to reduce the cold pressure in bathroom ?

    Does this make sense, is this a known problem ? Oh and how do I fix it.

    Regards
    John B
     
  2. Sponsored Links
  3. steve32

    steve32

    Joined:
    23 Nov 2008
    Messages:
    841
    Thanks Received:
    164
    Location:
    Essex
    Country:
    United Kingdom
    The small tank in loft should be cold it is the heating expansion tank.
    You may have pumping over this needs sorting.

    You will have to run a 22mm pipe from the cold water storage tank in the loft to the bath/shower mixer you need to have balanced supplies for it to work.
     
  4. johnberman

    johnberman

    Joined:
    26 Feb 2014
    Messages:
    19
    Thanks Received:
    0
    Location:
    Surrey
    Country:
    United Kingdom
    Err is this a stupid thought, I understand the need for the balanced supply, if I had a tap under the bath on the cold water supply could I simply use that to reduce the cold flow, as its the cold that's a higher pressure than the hot

    John B
     
  5. Hessles

    Hessles

    Joined:
    4 Mar 2014
    Messages:
    28
    Thanks Received:
    0
    Location:
    West Midlands
    Country:
    United Kingdom
    Is the cold to the bath tap mains pressure?
     
  6. johnberman

    johnberman

    Joined:
    26 Feb 2014
    Messages:
    19
    Thanks Received:
    0
    Location:
    Surrey
    Country:
    United Kingdom
    Yes It mains pressure and so much more fierce than the hot, hence in the shower its like a competition and COLD WINS

    John B
     
  7. steve32

    steve32

    Joined:
    23 Nov 2008
    Messages:
    841
    Thanks Received:
    164
    Location:
    Essex
    Country:
    United Kingdom
    No you need a tank fed cold supply
     
  8. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  9. Sponsored Links
Loading...

Share This Page