On 05/07/2010 15:31, Tom wrote:
Hi All,

The instructions with this towel rad merely said use PTFE tape around
the tread of the value tail when screwing this into the rad.

But I can't stop it leaking (slow drip) - it purely replies on the
thread of the valve tail to keep it water tight - there is no flange
for the tail to but up onto. The blanking plug and bleed valve at the
top don't have this issue as they have rubber seals that sit between
them and the rad itself. this isn't possible with the valve tails.

I've tried leaking compound - no luck, it still leaks - slowly drips
actually.

Any suggestions as to what might solve this?

Thanks, Tom

These things are *meant* to seal on the threads, and usually do! The
tail is slightly tapered, and should go tight at a certain point without
needing a positive end stop - but you need the right amount of PTFE tape
to ensure that this happens. I find that gas grade tape - which is
slightly thicker - is far better than the standard stuff. Make sure you
wrap the tape the *right* way round the tail, so that it isn't forced
out when you screw the tail in. If all else fails, use liquid PTFE - but
that shouldn't really be necessary.
--
Cheers,
Roger
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