Bodging a short insert (~2cm) into 28mm pipe

Discussion in 'Plumbing and Central Heating' started by boringoldcodger, 9 Jun 2020.

  1. boringoldcodger

    boringoldcodger

    Joined:
    1 Sep 2014
    Messages:
    119
    Thanks Received:
    25
    Location:
    London
    Country:
    United Kingdom
    The outlet from my cold water tank is a 28mm pipe, the valve (which hasn't been used for ~ 30 years) is jammed. I'd like to replace it with a ball valve (aka lever valve ?) but Peglers website says their valve is 96mm long and the current one is 113mm. I reckon my chances of, ahem, finding (in a skip ?) a short length of 28mm is zero and I don't want to buy 2 metres. In practice I'm going to have to cut a bit out of the pipe and insert something a few centimetres long (the pipe run is over a metre so that's no problem).

    Various ideas:
    a) Use a screwdriver slot isolating valve which I'd hide with insulation, but I can't find a 28mm one.

    b) Use a repair coupling, but again I can't find a 28mm one.

    c) Use a pair of 28mm to 22mm connectors and a short length of 22mm pipe (which I've got).

    d) Use a T connector which has a 15mm branch and use a blanking disc to block the branch; link to a suitable connector:
    https://www.tradingdepot.co.uk/compression-fitting-tee-reduced-branch-28mm-x-28mm-x-15mm

    Currently this is my favourite, if I did this should I point the branch downwards so as to avoid an air pocket ?

    e) Use a suitable Non-return valve; such as (link):
    https://www.tradingdepot.co.uk/brass-spring-loaded-check-valve-c-x-c-28mm


    Any advice or comments gratefully received.
     
    Last edited: 9 Jun 2020
  2. Sponsored Links
  3. footprints

    footprints

    Joined:
    21 Sep 2011
    Messages:
    4,491
    Thanks Received:
    961
    Country:
    United Kingdom
    A photo of the valve in relation to the tank might help, however as long as the valve is jambed in the open position leave it there and fit your new valve further down the line.
     
    • Like Like x 3
    • Thanks Thanks x 1
  4. boringoldcodger

    boringoldcodger

    Joined:
    1 Sep 2014
    Messages:
    119
    Thanks Received:
    25
    Location:
    London
    Country:
    United Kingdom
    Originally I thought of just adding the new valve but, probably for spurious reasons, decided against it. I'll get a photo tomorrow as long as I can get sufficient light in a dark loft.
     
  5. boringoldcodger

    boringoldcodger

    Joined:
    1 Sep 2014
    Messages:
    119
    Thanks Received:
    25
    Location:
    London
    Country:
    United Kingdom
    As feared the light was a problem, I don't know whether this photo is good enough. The tank is really 2 tanks connected together, the right hand one is the inlet and the left hand the outlet.


    cold_water_tank.jpg

    The jammed valve is on the right, as you can see there's plenty of room to add a valve, there's also plenty of pipe to the right of the valve (out of shot). Originally I was going put a ball valve where the outlet pipe passes in front of the gap between the tanks, so that when the valve was off the lever would be between them so it'd be difficult to accidentally knock it on. I then felt that removing the jammed valve would be a neater job and started to tie myself in knots.
     
  6. Nige F

    Nige F

    Joined:
    28 Jun 2005
    Messages:
    21,254
    Thanks Received:
    1,753
    Country:
    United Kingdom
    That's a stopcock there, most likely compression ends - so you could remove it and service "it on the bench" Technically not correct, but a gate valve siezed would not be repairable.
     
    • Thanks Thanks x 1
  7. Nozzle

    Nozzle

    Joined:
    23 Dec 2012
    Messages:
    2,240
    Thanks Received:
    297
    Location:
    Suffolk
    Country:
    United Kingdom
    Take out the old valve, take out the disc/seat, drill out the inners if you have to. You could even back out the gland and just fit a blank instead of the valve spindle/handle. Refit in the pipe. Then, fit the valve you want in series somewhere close by on the same line. There you have it, using the valve body instead of buying a length of pipe.

    Nozzle
     
    Last edited: 10 Jun 2020
    • Thanks Thanks x 1
    • Like Like x 1
  8. boringoldcodger

    boringoldcodger

    Joined:
    1 Sep 2014
    Messages:
    119
    Thanks Received:
    25
    Location:
    London
    Country:
    United Kingdom
    Thanks for both of these I'll try to switch brain on (not always easy). Thanks again.
     
  9. Sponsored Links
  10. footprints

    footprints

    Joined:
    21 Sep 2011
    Messages:
    4,491
    Thanks Received:
    961
    Country:
    United Kingdom
    • Thanks Thanks x 2
  11. Hugh Jaleak

    Hugh Jaleak

    Joined:
    3 Feb 2008
    Messages:
    7,471
    Thanks Received:
    1,762
    Location:
    Northamptonshire
    Country:
    United Kingdom
    Ask on your local Social Media page, someone might have a spare piece of 28mm kicking about. I have some here, but I'm a bit far!
     
  12. polesapart

    polesapart

    Joined:
    27 May 2011
    Messages:
    1,393
    Thanks Received:
    366
    Country:
    United Kingdom
    Or hang around outside your local plumbers merchants and scrounge an offcut from a passing plumber.
     
    • Thanks Thanks x 1
  13. boringoldcodger

    boringoldcodger

    Joined:
    1 Sep 2014
    Messages:
    119
    Thanks Received:
    25
    Location:
    London
    Country:
    United Kingdom
    I've got some relations who live in Potters Bar, I did wonder if they knew Dilalio and if he might have an offcut. However my current favourite idea is Nozzle's suggestion of removing the innards and putting in a blanking cap, that's as long as I don't have to remove the valve and put it in a vice (largely 'cos I ain't got one).
     
    Last edited: 14 Jun 2020
    • Like Like x 1
  14. oldbuffer

    oldbuffer

    Joined:
    6 May 2010
    Messages:
    1,496
    Thanks Received:
    562
    Location:
    London
    Country:
    United Kingdom
    If you are West London, I've got a bit you can have (Ealing).
     
  15. boringoldcodger

    boringoldcodger

    Joined:
    1 Sep 2014
    Messages:
    119
    Thanks Received:
    25
    Location:
    London
    Country:
    United Kingdom
    I've tried to "start a conversation" with you but as I've never done it before I may well have got it wrong.
     
  16. 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

     
Loading...

Share This Page