radiator valve leaking

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30 Nov 2009
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I've got a leak coming from a radiator valve spindle (see picture). It used to leak if the radiator was turned off but lately it's been leaking slightly all the time. I've been told by a plumber friend that all i need to do is tighten the gland nut but this won't budge and i'm reluctant to use alot of force.

Part of the problem is that the hexagonal nut (i'm guessing it's this) at the bottom is only 2mm deep so i can't get much of a grip of this - any ideas how to move it and whether this is the solution?

 
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Not all rad valves have gland nuts - in fact most of them don't. I assume the leak is coming up the spindle?
A valve with a gland nut will have 2 hexagons - the upper one being the gland and the lower one holding the insert into the valve housing.
If yours only has the lower hexagon the valve needs renewing, but if you do have a gland, you can tighten it - but its often best to undo it and pack it with ptfe tape first. Make sure you're certain of what you have!!
John :)
 
ok - that makes a lot of sense - and thanks for the speedy reply. If you look at the picture there's two hexagonal nuts, one just under where i pointed to the leak (that's the one i thought was the gland nut) and another at the bottom which is a bit more obvious in the picture. Like i said i couldn't make the top one budge.

Given that the valve probably needs replacing anyway would you recommend this to a novice DIYer?
 
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