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

Hot/Cold water pipe lost a little bit pressure over 4 weeks - normal?

Discussion in 'Plumbing and Central Heating' started by loveextasy, 2 Jan 2016.

  1. loveextasy

    loveextasy

    Joined:
    4 Nov 2015
    Messages:
    10
    Thanks Received:
    0
    Country:
    United Kingdom
    Hi,

    I have recently replaced a conventional boiler with a combi one about 2.5 months ago, and was a little bit worried about leaking when changing from low to high pressure system.

    And I used the 4 weeks' of holiday to test it - by turning off the mains water supply 4 weeks ago, and check if the water from tap is as powerful as it should (what I believe is, even the mains is off, the pressure from the tap should be as powerful as usual at first instance, then reduced to some level of low pressure flow).

    Unfortunately when I came back today and turned the tap with mains still off, the tap flow is already low pressure, as of about 1-1.5 seconds later from what I'd expected.

    I am just wondering if anyone knows it is normal, or does it means of anywhere leaking in my house that is too little or hidden to be found?

    Thanks a lot!

    Regards.
     
  2. Sponsored Links
  3. Dan Robinson

    Dan Robinson

    Joined:
    1 Jul 2007
    Messages:
    56,034
    Thanks Received:
    9,420
    Location:
    Hertfordshire & London
    Country:
    United Kingdom
    Any chance of getting this in English?
     
    • Like Like x 2
  4. Daveydub

    Daveydub

    Joined:
    18 Oct 2013
    Messages:
    1,676
    Thanks Received:
    568
    Location:
    Gloucestershire
    Country:
    United Kingdom
    What?
    ????
     
    • Like Like x 1
  5. TCCHeating

    TCCHeating

    Joined:
    4 Mar 2013
    Messages:
    2,883
    Thanks Received:
    710
    Country:
    United Kingdom
    Eh?
     
    • Like Like x 1
  6. Daveydub

    Daveydub

    Joined:
    18 Oct 2013
    Messages:
    1,676
    Thanks Received:
    568
    Location:
    Gloucestershire
    Country:
    United Kingdom
    The clue may be in the name I suppose
     
    • Like Like x 1
  7. HERTS P&D

    HERTS P&D

    Joined:
    9 Apr 2010
    Messages:
    13,102
    Thanks Received:
    2,022
    Location:
    Hertfordshire
    Country:
    United Kingdom
    So you lived in your house with no water for a month?

    Has anyone mentioned the 'smell'

    Andy
     
  8. loveextasy

    loveextasy

    Joined:
    4 Nov 2015
    Messages:
    10
    Thanks Received:
    0
    Country:
    United Kingdom
    I'm sorry I'm not a native Engilish speaker.....hope I can get it described as much as I could, but seems I failed :(
     
  9. MrGassafe

    MrGassafe

    Joined:
    26 Oct 2009
    Messages:
    116
    Thanks Received:
    21
    Location:
    Surrey
    Country:
    United Kingdom
    Mmmmmm. 1st wind up of 2016 perhaps?
     
  10. Sponsored Links
  11. loveextasy

    loveextasy

    Joined:
    4 Nov 2015
    Messages:
    10
    Thanks Received:
    0
    Country:
    United Kingdom
    Hi,

    Thanks for your reply.

    No, I actually went on holiday 4 weeks ago, and turned the mains off on the day I left, and tested the tap's pressure today when I got back home with mains still off....and the tap's pressure is not as strong as when the mains is on.

    I did another test by turning the mains back on again, waiting for the water to fill in the pipe, then turn the mains off again, and tested the tap's pressure, and the immediate pressure from tap is strong....

    Hope this makes sense though

    Thanks again!
     
  12. TCCHeating

    TCCHeating

    Joined:
    4 Mar 2013
    Messages:
    2,883
    Thanks Received:
    710
    Country:
    United Kingdom
    Sounds like your stop tap isn't fully turning off
     
  13. Daveydub

    Daveydub

    Joined:
    18 Oct 2013
    Messages:
    1,676
    Thanks Received:
    568
    Location:
    Gloucestershire
    Country:
    United Kingdom
    I think that you are saying that with the stop-tap off, when you open a tap you get a little spurt of water and then flow stops. This is due to a bit of air, compressed in the pipework, forcing water out of the tap when opened. That this air is still not present after 4 weeks should not alarm you. It may have been absorbed or lost through taps, ball valves, connections. The fact that a tap (etc) does not drip water does not mean that it will hold air for 4 weeks.
     
  14. loveextasy

    loveextasy

    Joined:
    4 Nov 2015
    Messages:
    10
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks TCCHeating

    I think the water should be continue to come out from the tap if the mains stop isn't fully off? In my case the pressure is decreasing and after about 10-15 seconds there'll be no water coming out.
     
  15. TCCHeating

    TCCHeating

    Joined:
    4 Mar 2013
    Messages:
    2,883
    Thanks Received:
    710
    Country:
    United Kingdom
    Perfectly normal then.
     
  16. loveextasy

    loveextasy

    Joined:
    4 Nov 2015
    Messages:
    10
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks very much! That's exactly what I mean! And your answer gives me a big relief :D Actually what I see from the tap is I get a spurt of water, then the water pressure is decreasing as it come from the loft tank and decreasing, and finally no water after 10-15 seconds.

    Sorry I may be too worried about the potential of leaking when changing to high pressure system, and did not know that there is air in the pipework....I thought it is only water in the pipework.....

    Anyway, thanks again for your answer and gives me a big relief :)
     
  17. Dan Robinson

    Dan Robinson

    Joined:
    1 Jul 2007
    Messages:
    56,034
    Thanks Received:
    9,420
    Location:
    Hertfordshire & London
    Country:
    United Kingdom
    Dōitashimashite
     
Loading...

Share This Page