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

Water pressure to showers

Discussion in 'Plumbing and Central Heating' started by Builder2011, 24 Mar 2019.

  1. Builder2011

    Builder2011

    Joined:
    16 Aug 2010
    Messages:
    144
    Thanks Received:
    5
    Location:
    Middlesex
    Country:
    United Kingdom
    Hello and thank you for reading this message.

    Our hot water cylinder has no manufacturer name on it so I cannot find a manual. The system is fed directly from the mains with new gas condenser boiler, cylinder, and container above the cylinder looking like a pressure cylinder. The system feeds 2 first floor showers, a first floor bath, and a second floor shower, and ground kitchen. The hot water pressure is ok but how can the pressure be increased please?

    Thank you.
     
  2. Sponsored Links
  3. Builder2011

    Builder2011

    Joined:
    16 Aug 2010
    Messages:
    144
    Thanks Received:
    5
    Location:
    Middlesex
    Country:
    United Kingdom
    Photos
     

    Attached Files:

  4. oldbuffer

    oldbuffer

    Joined:
    6 May 2010
    Messages:
    1,227
    Thanks Received:
    443
    Location:
    London
    Country:
    United Kingdom
    The hot water pressure will be the lower of the mains water pressure and (about) 3 bar, the latter figure depending on the setting of the combination valve. Measure the mains water pressure as static (pressure gauge on the kitchen or an outside tap, no taps running), and dynamic (gauge attached as before and with another cold mains tap running). You cannot get more than the mains pressure without a substantial amount of work and expense (new main, accumulator).

    Are you sure you mean pressure and not flow rate?
     
    • Thanks Thanks x 1
  5. Builder2011

    Builder2011

    Joined:
    16 Aug 2010
    Messages:
    144
    Thanks Received:
    5
    Location:
    Middlesex
    Country:
    United Kingdom
    OB, thank you for your reply.
    Yes, flow rate as in the water coming out of the showers. Was hoping pressure and flow rate were related.
    When the bath is running, the shower on the floor above has no flow.
     
  6. Madrab

    Madrab

    Joined:
    4 Oct 2012
    Messages:
    7,563
    Thanks Received:
    2,103
    Location:
    East Renfrewshire
    Country:
    United Kingdom
    Pressure is the force that the water exits the outlet at and is key when designing the system, flow is the amount of water that the system can deliver and is just as important when designing. You can only get out what you can put in. Pressure is important when supplying more than one outlet at a time as the available pressure in the system drops in proportion to the number of outlets that are open, it is also important to know if the system pressure can be maintained by the mains.

    As @oldbuffer mentions, you need to know the dynamic pressure and flow available to the hot water cylinder when running multiple outlets, this will determine what the system is capable of delivering before looking into what can be done about it.
     
    • Thanks Thanks x 1
  7. Builder2011

    Builder2011

    Joined:
    16 Aug 2010
    Messages:
    144
    Thanks Received:
    5
    Location:
    Middlesex
    Country:
    United Kingdom
    Madrab, thank you for your reply. Will find out about existing pressure asap.
     
  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