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mains

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  1. Stefromthewirral

    Double Check Valve on incoming mains

    Hi all, I have two questions that I'm looking for advice on please? 1. I've been asked to fit a double check valve on a new incoming main. I only did my water regs last year and this wasn't stipulated in the reg's? Has this now changed or did miss something? The property in Cheshire. The main's...
  2. M

    Noisy mains (like hammer)

    Hi guys/girls , can any body help? , i have a loud water hammer noise ,(like a fog horn) mainly at night,( when nothing is on) (and normally occurs twice within 30 seconds of each time) i have ;;; turned heating off , reduced pressure/ increased pressure, i have checked and replaced ball cocks...
  3. W

    Help Required : Mains Water Leak Under Sink

    Hello, I am hoping someone on this forum may be able to offer me some advice. I had a big water leak this morning from the mains water supply into the house, under the sink. The leak occured before the shut off tap that i could have used to turn the water off internally and had to turn the...
  4. S

    Blocked plate heat exchanger: heating waterway or mains waterway?

    Hoping someone can help diagnose whether the blocked plate head exchanger in my mum’s combi boiler is down to the heating waterway or mains waterway. Issue is that she only gets around a basin’s worth of hot water before the tap runs cold. No issue with water pressure from tap, and central...
  5. M

    Gas mains upgrade sizing

    Hi gas gurus, Job come through today I went round to price. 3 flats being fully converted, Gas Meter downstairs (on ground floor had gas) service come in approx 1 inch steel and then has ecv on. Customers had British gas round to fit new meters in each flat and was told he'll need a gas...
  6. PDS

    Harleqin Heatstream 200L Direct Mains Pressure Hot Water Storage Tank 200Dir

    Hi All, I’m fitting my first Harlequin unit next week and would appreciate any advice or tips you guys may have. The installation guide recommended either an expansion vessel or shock arrestor, what would be the preferred unit? Thanks in advance.
    • PDS
    • Thread
    • hot water mains pressure tank water
    • Replies: 2
    • Forum: Bathroom Advice
  7. D

    Low mains water pressure

    Hello, Bought my house 3 years ago, a 50 year plus detached house on the coast of north west England. Lots of heating and insulating projects to do over the next couple of years. So I though I'd join this forum so I can find out some good ideas while getting my house up to scratch. Currently I...
  8. J

    Low flow rate in outside and mains cold tap only. Mains pressure combi system

    Hi, We have been in our house for just over two years, we have always had low pressure in our downstairs cold tap (mixer tap), hot is fine, and also in our outside tap, this branches off the main cold line before it hits the cold side of the tap. (please see images, cold is the right side...
  9. V

    Should I attempt to mains flush my CH system?

    I just moved into my new flat and the boiler is probably around 20 years old. It's a sealed non-condensing Valliant Turbomax VUW 242 and on it's last legs. Just got the circuit board replaced with a refurb off eBay while I save some pennies. The system is a mix of 15mm and microbore copper...
  10. Stants

    Mains stopcock stuck

    Hi I have a mains stopcock that’s stuck open ( similar as in pic ) it will not turn by hand to close so my plan was this, ive squirted some WD40 into the end where the round part meets the main body I was then going to take handle off and use a spanner to try and move it but before I try this...
  11. O

    Mains water upgrade ....

    hi lads, I would like to pick your brains please. Who is allowed to upgrade the mains from footpath to the basement? Am I allowed to do it myself? I have done many times in Europe and would do it if I was allowed to undertake the works. Attached is a picture Thank you for your advise
    • Old Account
    • Thread
    • mains water
    • Replies: 15
    • Forum: Bathroom Advice
  12. M

    Can i use a ball lever as mains stopcock

    Hi, Is it OK to use a ball lever as a mains stopcock? ive read a few old threads but none of them seem to have definitive answer! also can you use plastic / push fit off a mains stopcock or does it have to be copper?
  13. G

    Joining 32mm mdpe pipe to the mains at the meter

    I've had a 32mm mdpe water pipe put in from my house to the meter which is inside the boundary of my house .How do I join it to the meter ?
  14. Harrytb

    mains water in - what is this fitting ?

    Hi was clearing under my house, noticed the mains water in has a leak from some strange blue fitting. No markings on it. What is it? Do I need it? Where can I get a replacement if I do Thanks Harry
  15. P

    Connecting to internal mains suppy

    Hello, I need to get a mains feed to a new toilet system, as i live in a bungalow with solid floors the easiest way is to run new pipes from the loft area. With that in mind I have a mains fed water tank in the loft so is it ok to tap into the mains pipe, just before the the water tank to feed...
  16. K

    Mains cold and hot (other pipes) run too close to each other

    Hi, I have just noticed that the hot and cold pipes (and the gas) run to close to each other as shown in the attached photos. This the 1st floor joists. Blue: mains cold to boiler and kitchen downstairs Red: hot from boiler to 1st floor bathroom Yellow: gas to boiler The rest are...
  17. D

    Incoming mains 3bar flow rate 16litre permin

    3bed house 2 shower 2sink 11rads What size combo boiler please
  18. A

    Double-check valve on mains boiler fill

    Hi, I need to pressurise the central heating system and the mains cold water pressure is sufficient. Would a double-check valve on the branch to the boiler be considered sufficient to separate the closed heating loop from the domestic water system? Thanks
    • Al_Lora
    • Thread
    • boiler mains valve
    • Replies: 12
    • Forum: Boilers
  19. J

    Incoming mains black plastic pipe to 15mm copper

    Hi. Have a mid 1980’s house with the mains water coming in from underground via a black plastic pipe, of which the external diameter is 27mm. There does not appear to be any markings on it, but maybe some faint green. This goes into a 15mm copper pipe via a stop tap with compression...
  20. D

    15mm Soft Copper Pipe for above ground mains

    Hi, Are there any current regs prohibiting the use of 15mm and 22mm soft copper coils for an above ground domestic water supply? I've been given half a coil of 15mm soft copper which is coated in blue plastic and it would be perfect for outdoor tap installs as it's flexible and would require few...
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