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Tim Lamb[_2_] Tim Lamb[_2_] is offline
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Default Looking for a leak

In message , Roger Hayter
writes
Tim Lamb wrote:

In message , Mr Pounder Esquire
writes
John Rumm wrote:
So far all the normal tricks don't seem to be doing it!

Short version:

There is a leak somewhere in my central heating system - its losing
pressure regularly, and needs topping up with at least a couple of
litres a day.

Snip. Not being rude.
I was losing water. The loop valve was not turned off properly, even though
it looked okay.


Further news on my leak.

Isolating the floors showed the leak was upstairs! Slight wet patch
showing below the manifold cover.

Water drip from the *plumber fitted* mixer valve! Basically the threaded
spigot on the valve was too short to seal against the fibre washer
inside the 22mm coupler. The joint was garmed up with plumbers mait.

Agricultural solution plus lots of ptfe tape...... we'll see how it
goes.

Could you just saw a few mm off the nut?


You were right. The agricultural solution failed once the hot water
reached the manifold.

I have shortened the coupler by turning off the spanner flats.
Fortunately I have a set of *Mole* grips with curved jaws which were a
good fit on the remaining body. More mait and it was running OK last
night.


--
Tim Lamb