stop cock

A stopcock is a form of valve used to control the flow of a liquid or gas. The term is not precise and is applied to many different types of valve. The only consistent attribute is that the valve is designed to completely stop the flow when closed fully.

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  1. J

    Replacing bath/tap....Hot water stopcock

    Hi all, I am trying to turn off the taps to the bath as i want to replace bath and tap, i have isolation valve's for both hot and cold (see picture 5)....the cold water isolation valve works great, the hot water one does not fully stop the hot water coming from the tap. So it looks like the...
  2. G

    stopcock not working, what is this?

    Hi just got the keys to my house and found the stopcock is not working, however directly below it there is a really old looking thing could this be another stopcock and if so how do I use it?
  3. B

    Pipe leaking below stopcock, can I put my central heating on?

    I have a small jet of water spurting out of a pipe below the stopcock. Can you please tell me if it will affect my central heating, is it safe to put it on? thank you.
  4. A

    Strange problem - mains water running for 10 secs every few mins

    Hi, Got a strange issue and hoping someone has some ideas please. The other day I needed to switch off the stopcock to work on my toilet. Water was off for an hour or so and since then there is a strange noise every few minutes. It sounds like water running in a pipe and is coming from the...
  5. J

    stopcock and pipework

    Hi all, I'm renovating a property and would like to move the stopcock to a more convenient location but need some advice on the fittings to use. The pipe coming into the house is steel and measures at around 28mm outside diameter (see picture). I'd like to know if 28mm steel pipe sounds...
  6. R

    Leaking new stopcock tap

    Hi I have just replaced a 15mm stopcock tap in my airing cupboard. Fitted it fine with PTFE tap to create a better seal. Once open it leaks from the top of the nut, only a slow one. Any ideas what it can be...? I added PTFE tape to the olive as well as the thread on the unit. Maybe not...
  7. 1

    Replacing stopcock, which size

    Hi, I am looking to change my stopcock to a 22mm version. I am currently getting everything ready for my unvented system and figured I'd get this done whilst I've got the floor up downstairs re piping the bottom central heating ring. The plan is to run the pipe into the adjacent garage which...
  8. D

    Very old stopcock leaking

    I have a very old stopcock that will not shut off the flow I followed some advice to spay with WD and worked the valve..now is leaking and still won't shut off, can the valve be stripped back by unscrewing the square nut, and can a replacement be bought anywhere, I assume it would be easier to...
  9. W

    Can't turn off my water

    Hello, I am trying to turn off the water supply to my Flat so that I can look at fixing the shower (currently dripping, but I believe I know how to sort it), however I have tried turning off what I believed is the main supply, however I still get running water in my flat. If you take a look at...
  10. S

    stopcock v check valve

    hi all, i have recently had a new combi boiler fitted and since then i am plagued with water hammer. i have researched this and some fitters are saying it could possibly be caused by the stop cocks i fitted to isolate various parts of the house and extension. i have read that fitting check...
  11. A

    Leaking external stopcock - South Staffs responsibility?

    Hi there, i'm new to the forum but am hoping somebody could provide some advice on the following problem Have recently purchased an end terrace cottage with a shared water supply. Last night we got back from work to find that we had no water. south staffs eventually agreed to come out and...
    • alex7783
    • Thread
    • code damage external free installation leak leaking low water pressure mains no water pipe pressure redundant south stop cock stopcock supply supply pipe tap test valve water water pressure website work
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  12. S

    Pipe above ceiling or under floor?

    Hi Folks I'm installing a loo in a chaps back passage (fnaar!) which will have a boarded ceiling. He's had someone look at it and they suggested that the pipes should be taken from the kitchen below the ceiling and run across outdoor ceiling and drop into wc. The stopcock etc is by the...
    • smudger
    • Thread
    • above building burst ceiling cold costs floor installation kitchen leak paint pipe pipes stop cock tee tiles tips under underfloor valves wall
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  13. Q

    Who's responsible for this?

    Over the weekend the cold water supply to our house burst at the stopcock on the road outside. Scottish Water were quick to attend and promptly dug up the offending section of pipe, and when we got in tonight the cold water was full of silt for a while until it had run through the system...
    • Quidam
    • Thread
    • boiler burst cold cold water combi combi boiler filter fix hot hot water pipe problem stop cock supply system valve water work
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  14. M

    black alkathene

    hi ive got to change a leaking stop tap which comes off black alkathene mains. Will a 22mm stop tap fit the existing nut off the leaking stop tap?
    • mikegas
    • Thread
    • 22mm adaptor alkathene bits black convert copper drain fitting gas leaking mains merchants pipe price remove stock stop cock tap valve
    • Replies: 13
    • Forum: Plumbing Jobs | The Job-board
  15. M

    changing lead to copper

    HI I have been asked to work at aproperty where the rising main comes up through a cellar into a kitchen above in 1" lead pipe (actually measures .95" OD) The guy wants me to replace the pipe as far down as possible and replace with copper upwards in 22mm to kitchen. i know you can can...
    • mjt
    • Thread
    • 22mm changing connect copper kitchen lead pipe stop cock stopcock supply valve wall work
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  16. T

    no drain off valve....

    just been round a friends house to replace a kitchen tap , no drain off valve on hot or cold anywhere in the house, looked at the feed for the out side tap and it had no stopcock or check valve , just straight into the mains. apparently all the plumbing was done by a very well established...
    • that bloke.
    • Thread
    • check valve cold drain drain down find fitting funny heating hose hot job kitchen leak mains monobloc plumbing stop cock system tap taps valve valves wall water work
    • Replies: 20
    • Forum: Plumbing Jobs | The Job-board
  17. T

    weeping solder joint under drain off level,

    can a solder joint be re-soldered if there is water in the pipe? ive often heard people say it can but ive never tried , ive got a weeping solder joint below the drain off valve.
    • that bloke.
    • Thread
    • drain fitting glue joint level pipe pipes seal solder stop cock temperature test under valve water
    • Replies: 7
    • Forum: Plumbing Jobs | The Job-board
  18. L

    Immersion Heater

    :) Good morning, i have a multi part question if you have a moment to read and possibly comment. I have just replaced the immersion heater on a copper cylinder but i had some problems isolating the cold supply. There is a gate valve which i shut and then using a hose pipe i opened the drain...
    • Leoki
    • Thread
    • cold copper cylinder drain expansion flow heater hose hot immersion immersion heater indirect no water pipe plug screw seal stop cock supply tank taps thermal valve valves water
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  19. K

    Problem stop tap.....i'm stuck !!! With Photo's as always

    right, i have a problem. let me quickly explain. i had been getting bad water hammer, and presumed it was caused by a old vertical peice of pipe, which was capped, and hence full of air. Last week i removed this pipe, but still had the hammer. I found it to be the stop tap where the mains...
    • k13 wjd
    • Thread
    • air always brake brass concrete difficult free hammer install leak mains pipe plumbers problem remove seal sealed stop cock stop tap stuck tap valve vertical water
    • Replies: 8
    • Forum: Plumbing Jobs | The Job-board
  20. W

    "My stopcock has started leaking"

    "Has it? Ah. Oh dear." "It wasn't leaking before you turned it off and on again." "Well they do occassionally start to leak I'm afraid. Especially when they've not been touched for a while or are getting on a bit." "It didn't leak when they fitted our bathroom last year." "No, but it was...
    • WaterTight
    • Thread
    • bathroom costs fix ideal job kitchen lead leak leaking plumber plumbing problem replacement started stop cock stopcock tap washer water work
    • Replies: 11
    • Forum: Plumbing Jobs | The Job-board

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