I have a mystery part that has sprung a leak! It's attached to the central heating system near the boiler. The system is very old with a back boiler in the lounge.
Hi The part in your photos is an old safety valve. these are no longer used, and can be removed. I can't be sure from the photo, but I suspect it's 3/4 so could be replaced with a 3/4 BSP brass plug.
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by diy_monkey » Fri Nov 15, 2013 8:35 pm 
by cassin10 » Tue Dec 03, 2019 10:06 pm
