Looks like a drain down point, they sometimes have an O ring on them
boiler will need to be drained and the plug removed and resealed
That picture is deceiving and I think that's the fill vave assy leaking and there is a modified fill loop kit for that.Was the pic taken looking up underneath boiler?
I new you'd be there mickyg but what took you so long
Many thanks for all the advice and help everyone.
The leak has stopped and all is bone dry, a gas fitter friend said he had a lot of these in the last few days, brought the bar pressure up to 1.5 and all is fine for the moment... no drip and more importantly no water gushing out when the heating is turned on!
I'll get the mod done though to make sure we don't get this problem in the future. Funny thing is the rads are MUCH hotter now that they were before this leak occurred. I wonder if there may have been an air lock in the combi?
Seems to me that this is a daft design by Glow worm in the first place. Why the hell have a valve where water can escape (or be drained) and put it where it can cause a flood. Couldn't they have capped it or attached a pipe like the overflow I ask myself.
ads are MUCH hotter now that they were before this leak occurred
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