Stop Valve Caps
- Thread starter bolo 2
- Start date
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What do you actually want to do? Those valves are designed to interrupt the flow of whatever so are effectively capping the supply pipe already
I know that, but since they both start leaking the moment I turn the screw, I want to cap them just for safety sake before removing the radiator.
If they are leaking from the screw they are goosed and need chucking out (those valves are not really suitable for heating pipe use anyway).
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i have used these in the past ,
www.screwfix.com
when i changed a radiator and the valve did not turn off correctly,
But i assume you will remove the isolation valve and be left with the pipe and olive and fitting
which I have also used
so this may do
www.screwfix.com
you may get just the ends , as you wont need the screw fitting or olive , as they will still be on the pipe
may need a bit of PFTE tape around the olive - may not - but worth having just in case
Flomasta Compression Blanking Nut 15mm - Screwfix
Order online at Screwfix.com. Blanking compression nut. FREE next day delivery available, free collection in 1 minute.
when i changed a radiator and the valve did not turn off correctly,
But i assume you will remove the isolation valve and be left with the pipe and olive and fitting
which I have also used
so this may do
Flomasta Brass Compression Stop Ends 15mm 2 Pack - Screwfix
Order online at Screwfix.com. Stop ends. FREE next day delivery available, free collection in 1 minute.
you may get just the ends , as you wont need the screw fitting or olive , as they will still be on the pipe
may need a bit of PFTE tape around the olive - may not - but worth having just in case
I know that too and they will be as and when my plumber is in the area and comes to do my jobs.
And I also know that since another diynot member told me when the same type of valve was mentioned by me in a previous thread.
What I really want to know is whether the required caps are universal fitting and if so, where can I order them from?
Do you mean as a replacement for the valve? If so then (as a temporary) JG 15mm pushfit stopends are ideal. You'd need to remove the olive from the supply pipe first though.
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Half inch BSP blanking cap nut and washer ,available from Screwfix and any plumbers merchants.
I don't think you can rely on the thread being standard. Often, a fitting from one manufacturer will not fit on the captive nut from an old fitting.
So you have to get the old olive off, and fit a new nut and olive.
Perhaps you will be lucky.
The exception is washing machine taps, enich have a standard thread on the outlet.
I think you want a blanking disc.
www.screwfix.com
So you have to get the old olive off, and fit a new nut and olive.
Perhaps you will be lucky.
The exception is washing machine taps, enich have a standard thread on the outlet.
I think you want a blanking disc.
Flomasta Brass Compression Blanking Disc Caps 15mm 2 Pack - Screwfix
Order online at Screwfix.com. Blanking disc 15mm. FREE next day delivery available, free collection in 1 minute.
Same problem I have.
Don’t know how I missed your post but just glad I found it second time round. I don’t have the expertise to remove the valve leaving the olive and nut! So I simply want to shut the valve, cap it (with your suggestion), and open it again to stop the leak at the screw. If I did remove the valve and flood the place, I wouldn’t know how to stop and my life wouldn’t be worth living! The pipes are microbore! Thank youBut i assume you will remove the isolation valve and be left with the pipe and olive and fitting
which I have also used
so this may do
Flomasta Brass Compression Stop Ends 15mm 2 Pack - Screwfix
Order online at Screwfix.com. Stop ends. FREE next day delivery available, free collection in 1 minute.
the image shows the flow direction, BUT to be honest doesnt mean anything - seen those fitted wrong way round, and ONLY a diyer helping a few people
so the pipe and olive will fit inside the valve - how are you going to move that out , to get the stop cap on ?
what does it feed???
Also the other side when removed - may drain whatever its connected to
so the pipe and olive will fit inside the valve - how are you going to move that out , to get the stop cap on ?
what does it feed???
Also the other side when removed - may drain whatever its connected to
I think you should have mentioned that they are microbore in the first post.
I am not a plumber but would recommend that you ask your plumber to fit lever valves rather than those awful ball fixing valves.
If you do temporarily use end caps, make sure that you have rubber washers in them. As a decorator, in the past, I have had to use use more than one washer in the end cap because the internal thread on the end cap was longer than the thread on the valve.
Last edited:
Should have mentioned I did get some rubber inserts with the cap itself , but i did add some washers too
I would have had I known that they were.
In a previous thread, it was suggested that valves shouldn’t have been used at all. I would imagine that the plumber will be using solder joins when he reconnects.
I think the plumber will know that.
Thank you for your input.
If they are connected to CH pipework to a radiator then you really need to get someone in to remove them and install proper fittings. They are not designed to be installed onto CH and will get worse of time, I have come across these on CH system before and they just leak constantly from the valve.
Get them removed before they get to that point.
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