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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. johndave

    Outdoor stopcock doesn't fully close

    Hi all I'm hoping someone can shine a light on this for me Since our stop tap on the pavement has now been filled with sand for whatever reason, we are relying on our property fitted stopcock (this is outside on our garage wall) Unfortunately turning this to the closed position only reduces...
  2. E

    Broken Stock cock handle .

    Hey all, Looking for some advice. My mother recently had her boiler changed but in the process the water had to be turned on and off as you would expect and the engineer broke of the handle. Luckily it seems you can close the valve with some pliers on the but I don't believe this is best for...
  3. J

    Is this my outside stopcock

    I cannot isolate my toilet water supply for a quick-fix, as the valve/tap is buried beneath tiling by whoever built the place. All other taps in the flat just isolate the kitchen. Is the green switch next to my water meter in this blurry photo a stopcock? It is underwater because there seems...
  4. P

    stopcock won't turn help please thanks

    Hi All Haven't tried my stopcock for a while and it won't turn by hand, tried a cloth over it Any tips to get it moving please Many thanks Phil.
  5. B

    stopcock issue advise please

    Morning everyone, if anyone could please offer advice on this issue it would help me with a massive issue regarding the water supply in my flat. My flat kitchen and bathroom was always on mains supply (no tank supply at all) and the rest of the 5 flats were mains supply to kitchen and water...
  6. king of pipes

    Commercial stopcock key

    Hi chaps I have a as new Ali plug cock key this is a big piece of kit for larger commercial fed type premises pictures available and price if your interested?? Regards kop
  7. J

    Thames Water lead pipes - meter to stopcock liability?

    Hi all. Thames Water lead pipes - meter to stopcock liability? I have had contradicting info. from TW & employees regarding the TW /consumer onus to repair or replace and various dates relating to policy changes. I was denied a free change or repair 5+ years ago. Also been told that near future...
  8. H

    How to replace outside stopcock in a rusty steel pipe

    What’s the correct way to replace a (jammed and leaking) stop-cock in an old and corroded ½ steel pipe without damaging the pipe? The pipe in question is a main water supply pipe for a house and dates from (I guess) the 1970s. It’s from a shared supply for myself and the neighbouring half dozen...
  9. R

    Is this the stopcock?

    Just in the process of buying a 1995 house. Doing a 2nd look around the property to see what needs upgrading, thought I determin where the stopcock for incoming water was. I can only assume that what I managed to picture is the stopcock, it a bit difficult to obtain something better as the...
  10. J

    Water mains trench - bend radius

    I'm looking to replace my water supply. I will be digging the trench on my side myself. I have all the safe dig plans etc and found the guide on the southern water website: Slightly confused by the 750mm minimum from the outside wall. Is this an actual thing? Every stopcock I have ever seen...
  11. K

    Leaking mains stopcock

    The internal stopcock was closed for the first time in about a year as part of a bathroom installation. Now that it's open (I leave it a quarter turn from fully open) it has a slight leak, approx half an egg cup full in 24 hours. Should I get it replaced? Thanks in advance.
    • keith2511
    • Thread
    • america leaking mains stop cock stopcock usa
    • Replies: 2
    • Forum: USA
  12. N

    Old stopcock gland nut – unusual & stuck

    Hi – can’t turn this nut with serrated edges. Tried big pliers & gave stilsons a gentle go – but to no avail. Since brushed it clean & found it’s chewed up a bit. What’s the best tool & process before I damage it further? It’s dripping from spindle when shut off tight but trickling when open...
    • ncdesign
    • Thread
    • gland gland nut nut old stop cock stopcock stuck unusual
    • Replies: 15
    • Forum: Ireland
  13. M

    Fitted new stopcock valve but it's leaking

    Evening all, I've just fitted a genuine stopcock valve but as you can see in the picture water is beading around where the unit is pressed/sealed together? Not sure if I'm able to fix this or do I need another new valve? Many thanks
  14. F

    Humming/vibrating pipes when no water is being used

    Hi Just wondering if anyone could help me please. I am getting loud vibrating/humming noises in the house when I’m not using any water. It seems to be coming from the cold feed and it’s vibrating through the house and you can hear it vibrating the boiler. I felt the pipe where the stop tap...
    • FandM
    • Thread
    • america being humming neighbours no water pipes stop cock stop tap usa vibrating water
    • Replies: 5
    • Forum: USA
  15. D

    Old Welded Mains stopcock leaking

    Looking at the picture attached would you say that this old stop tap can be taken apart and the washer replaced rather than making the job more complicated than it need be. It looks like a really old type of stop tap situated under the kitchen sink flat to the wall with no space around it to...
    • Diezeltruck
    • Thread
    • america leaking mains old stop cock stopcock usa
    • Replies: 7
    • Forum: USA
  16. H

    stopcock being noisy

    My stopcock is located in upstairs airing cupboard. Is it normal to hear water rushing through the pipes. Tried turning it down to no avail
    • Highlandlass
    • Thread
    • america being noisy stop cock stopcock usa
    • Replies: 2
    • Forum: USA
  17. J

    External Stop Valve

    Hi, My external stop valve is located in my rear garden. It is under ground and very old (1970). I am building rear extension and It will be in new extension. My water line is a shared line that provides water to 2 properties before and 1 after my property. I have been trying to locate the...
  18. M

    New Stopcock Fitting

    I am going to be replacing the toilet & sink in our under stairs WC. Whilst I'm there I want to tidy up the plumbing. I want to move the stopcock to a horizontal position (just the one, the other one will be removed). Is it ok to put fittings before the stopcock or should the stopcock be fitted...
  19. J

    Flexible pipe with stopcock.

    Hi All, I'm looking for a flexible water pipe that has a stopcock at one end. I'm looking to connect it to a hot water source found underneath the kitchen sink (see pic) and use it to fill up buckets to wash my car and open and close the flow of water as I please. Is there any sort of pipe...
  20. S

    stopcock found after 30 years!

    My mum has just had a new boiler fitted and we found the stopcock sticking out the plaster behind the old boiler. I have been looking for it for ages so it was quite nice to finally find it. Do you think it is safe to try and turn it after putting some wd40 on it and leaving it for a while?
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