Isolation valve that connects cold supply to kitchen sink tap?
- Thread starter DJSwift
- Start date
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They are notorious for leaking out of the slotted screw part. Make sure the nuts are nipped up properly and that it's not leaking from them and put a dab of silicone onto and around the slotted screw! (When in open position obviously!
If it's a cheap service valve then yes they will often leak through the gland seal when turned. It may stop when turned back on again. If not then a new one is required. You can bodge it, but do it correctly for the future.
It doesnt seem to be leaking from the screw though. Where the pipe for the cold supply enters the isolation valve is where it is leaking (appears to be) and then when i turn the valve, it stops!.
So the question is, can an isolation valve leak if on ? and not leak if in the stop position ? Or maybe the pipe that goes in is slight loose ? Is there a seal or olive inside one of these connectors ?
the biggest issue is, I cannot find the mains to stop the water completely. Outside on the driveway is a hole with a water meter in it. Plus a plastic tap thing which is written STOP and TAP. I tried all kinds of positions and it does not stop the water flow :S
So the question is, can an isolation valve leak if on ? and not leak if in the stop position ? Or maybe the pipe that goes in is slight loose ? Is there a seal or olive inside one of these connectors ?
the biggest issue is, I cannot find the mains to stop the water completely. Outside on the driveway is a hole with a water meter in it. Plus a plastic tap thing which is written STOP and TAP. I tried all kinds of positions and it does not stop the water flow :S
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?? Can you send a photo?
Is it one of the Surestop products that has been fitted as your main stop cock is inaccessible?
http://www.surestop.co.uk/owners/ss-15-rpl/
Is it one of the Surestop products that has been fitted as your main stop cock is inaccessible?
http://www.surestop.co.uk/owners/ss-15-rpl/
Also, it shouldn't be, but are you sure the tap is not tank fed? Do you have a tank?
The ISO valve may just need the bottom nut nipped up if it's weeping, if it's a compression fitting. If so then there will be an olive in there.
If the tap just keeps spinning and doesn't screw down tight then it's probably a 1/4 turn tap at the water meter, turn the tap so the head of the valve is 90deg to the direction of the pipe run.
If the tap just keeps spinning and doesn't screw down tight then it's probably a 1/4 turn tap at the water meter, turn the tap so the head of the valve is 90deg to the direction of the pipe run.
Don't over tighten the nuts 
hold body of valve with grips
hold body of valve with gripsDIYnot Local
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