I need to turn off an isolation valve. By the looks of it's a full bore and it's very difficult to turn. I've already partially mashed up the slot that you turn with the biggest screwdriver I have. Could anyone give any hints as to what gauge screwdriver to get for these giants slots or what tool they use?
Isolation valve problem
- Thread starter necronaut
- Start date
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If the slot is mullered and the valve possibly seized or very tight, I would be looking to replace. When they start seizing and causing the screwdriver to slip and damage the slot, you're fighting a losing battle. Only a screwdriver will turn these, as there's not much to grip onto with other tools.
What is the valve feeding?
What is the valve feeding?
L
longdogs
As WS suggests, you are better off replacing it because even if you do manage to turn it off, chances are you won't be able to turn it on again.
N
Newboy
Is there a recess for an allen key in the centre of the slot?
"Ballofix" valves should be turned with an allen key rather than a screwdriver
"Ballofix" valves should be turned with an allen key rather than a screwdriver
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That changed a couple of years back. Now a screwdriver slot.
No allen key, just the slot. I have a new one, slot is just as massive. It's very difficult to turn, even with my biggest screwdriver. I may need to get a chiseldriver or something. Already slighty shagged the new slot.
Full-bore Isolation valve
Full-bore Isolation valve
That was a cheap valve.
Andy
Andy
i think it was about £5.50 so not that cheap
It's for a shower feed so really needs to be full-bore
Go for the biggest screwdriver that will fit the slot, and you can try to turn the thing either way. If you replace it, do go for a full bore one.
John
John
The full bore valves are usually really tight to turn, every one I've fitted has been the same.
As everyone has said, needs to the biggest screwdriver with no play and the largest handle for leverage
As everyone has said, needs to the biggest screwdriver with no play and the largest handle for leverage
Get a full bore with a lever.
If the valve will be visible, remove the lever and keep nearby to operate the valve with. No screwdrivers needed.
http://www.screwfix.com/p/pegler-ball-valve-blue-15mm/11085
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