Hello Plumbers
I’ve replaced a 540mm high cast iron rad with 740mm high, like for like but still a 20mm valve extension was required.
All was ok until I've spotted a v small leak (like 1 drip per hour) between the valve nut and extension piece.
So I suspect I just need more PTFE + compound...
The majority of joints on my central heating system are threaded, apart from a few that are push fit.
However, the drain cock is a soldered fitment, so the question is - why is this soldered (unless on some older BSP systems) when a threaded joint is suitable for everything else?
Just seems...
I have three problems but will post separately.
Drained system yesterday and am left with a leaky drain cock.
400 ml in 16 hours so need to fix.
The pipework this one is attached to is boxed in, as you can see from photo.
I am not familiar with the innards of drain cocks but anyway I will have...
Below my Boiler I have a Pressure Relief Valve which vents to the outside and a drain cock (see image)
The drain-cock is dripping and requires a new washer
If I release this drain cock
Will it just drain down until the Expansion Tank pressure drops to 0bar until no more water flows
Or
Will it...
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