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

Water Pipes

Discussion in 'Plumbing and Central Heating' started by 79diz, 30 Nov 2020.

  1. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    Hi

    Im not sure if anyone can help I recently had to replace some outside water pipes on my nans house, the original pipes were really old and very small black ones. Changing them has helped with the water pressure in the house a little bit (before it was awful) because her house is in the counryside, the main road pipe in the road is also an old style one, is it possible to contact your local waterboard to see if they will chnge it for her to improve the water flow? Does anyone know the rules on this?

    Thanks in advance
     
  2. Sponsored Links
  3. denso13

    denso13

    Joined:
    22 Jan 2007
    Messages:
    4,707
    Thanks Received:
    1,043
    Country:
    United Kingdom
    You could make contact and ask but the legal minimum they need to supply is quite low anyway. They won't do it just for the sake of it.
     
  4. Hugh Jaleak

    Hugh Jaleak

    Joined:
    3 Feb 2008
    Messages:
    7,102
    Thanks Received:
    1,653
    Location:
    Northamptonshire
    Country:
    United Kingdom
    Have you changed the pipework up to the property boundary? If pressure remains poor, then check the statutory minimum the Water supplier is obliged to provide, if it's above that then as said, unlikely they'll do much. Are the neighbouring properties experiencing the same issue?
     
    • Like Like x 1
  5. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    Thanks for replies, Im just getting used to this site, I havent changed all the pipe to the house due to there being a path in the way, im going to try and go under the kitched and then report back, I will also try to add some pictures. Thanks again.
     
  6. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    Sorry for the dealy here is some pictures

    I had to replace the stopcock recently due to the last one breaking. This is nearest the hedge facing the edge of the properties boundry (so nearest to the road).
     

    Attached Files:

  7. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    We had to get the connector to fit the samller black pipe u can see at the bottom on this pic this is the conector you can just see on the last pic I put up). We are now facing towards the house. It then goes into the old brass conector, again the black pipe going up we got another conector to fit the new blue pipe which goes just to the outside tap, the other side at the bottom brass conector did continue to be a small black pipe but because ive left it mud has fallen on it, this continues towardsthe house but I havent dug further yet. As it might be difficult because of the concrete steps and path maybe?
     

    Attached Files:

  8. Harry Bloomfield

    Harry Bloomfield

    Joined:
    30 Dec 2018
    Messages:
    5,661
    Thanks Received:
    813
    Country:
    United Kingdom
    The black is an older install than the more modern blue pipe. Both look adequately sized, larger will not normally help the flow. Pressure and flow are two entirely separate values to assess.
     
    • Thanks Thanks x 1
  9. Stivino

    Stivino

    Joined:
    11 Oct 2006
    Messages:
    3,167
    Thanks Received:
    323
    Location:
    Midlothian
    Country:
    United Kingdom
    Pressure and flow are different but, they are related.
     
    • Thanks Thanks x 1
  10. Sponsored Links
  11. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    Yeah the plan is to install a more modern pipe, but we need to get to the house, I will dig a bigger trench and get back to you. Is it OK to be doing this, this time of year, re water freezing etc?

    I will try and measure the pressure too. Thanks for input.
     
  12. Harry Bloomfield

    Harry Bloomfield

    Joined:
    30 Dec 2018
    Messages:
    5,661
    Thanks Received:
    813
    Country:
    United Kingdom
    It's an awful lot of work to do, without first diagnosing whether there is or is not an issue with the pipes - unless you like digging? Check the pressure and flow as a first step.
     
    • Thanks Thanks x 1
  13. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    OK yes, I did install all the blue pipe which helped a bit. For the flow or pressure I did this system.....(I slso found out by looking inside the property that the main pipe goes into the bathroom that is on the ground floor in the middle of the house, this is why I wanted to dig the whole further as most prpoerties as you will porbably know, have the water going into the kitchen).

    "Aim water in to a bucket FULL for 10 seconds. Measure how many litres come out in this time, 'see' how solid the flow is - does it gush?! What happens if someone sticks their thumb over the flowing pipe end - is it powerful? Almost or actually impossible to stop the flow? Times' the number of litres x 6 to get 'litres per minute'."

    These are the readings I got for each point.

    Kitchen 7.8ltrs

    Outside Tap 9ltrs

    Bathroom (bath tap) 12.6ltrs ( I tried this several times as couldnt believe it was so much more)

    Is this the pressure or the flow?

    There is only one stopcock on the whole property near the hedge in the pictures above, I havent tested that yet as unsure if I should take aprt again.
     
  14. 79diz

    79diz

    Joined:
    15 Jun 2010
    Messages:
    26
    Thanks Received:
    1
    Location:
    London
    Country:
    United Kingdom
    Here are the pics of the bigger trench now going to the house. When looking at thehouse, to give you an idea, of the three large windows, the middle one is the bathroom where the pipe goes in. The one to the right is the kitchen. I was hoping the pipe would go along the garden and then go down under the path but it looks like it goes down under the path near the kitchen all the way along to the bathroom.
     

    Attached Files:

  15. Hugh Jaleak

    Hugh Jaleak

    Joined:
    3 Feb 2008
    Messages:
    7,102
    Thanks Received:
    1,653
    Location:
    Northamptonshire
    Country:
    United Kingdom
    I dont think piecemeal replacement is going to achieve very much, the whole installation is governed by the bore of the smallest section of pipework. I'd be breaking into the pipework at the boundary, see what pressure and flow figures you get there. If these are not substantially different to those you're getting in the house, then you're wasting your time doing anymore.

    Ask the neighbours if you can check their flow/pressure rates, again, if these are not substantially different, then the issue may well lie in the supply to the area, unless its below the statutory minimum, unlikely the Water Company will do much.
     
  16. oldbutnotdead

    oldbutnotdead

    Joined:
    11 Jan 2013
    Messages:
    3,989
    Thanks Received:
    801
    Location:
    Durham
    Country:
    United Kingdom
    Your measurements give the flow. The additional info you need are the static pressure (water pressure with no draw on the system) and dynamic pressure (pressure with full draw). Big pressure drop generally indicates a restriction in the pipework.
    On that subject, if the water main enters at the bathroom then the bath tap would usually give the best flow....
     
Loading...

Share This Page