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I am replacing a leaking shower (cartridge no longer available!) with another shower that we are otherwise not using. The replacement shower valve (concealed thermostatic) has feed inlets pointing upwards, as the feeds were originally coming from above. The new feeds are coming from below, so I...

Nah - 18 litres, so a pretty big one. Straight off the mains, with other feeds to other cold water taps and to the boiler itself, all off the same pipe. Great info on the WRAS approval - I bet it isn't (I'll check). I'll remove it if not. At least it's now easy to remove, now I know to turn off...

Thanks for the responses. I "bit the bullet" and drained the system. Then I found out what an idiot I was - not for the first time. Turns out this particular expansion vessel is not attached to the heating system (in my defence, the pipework is a bit of a mess due to lots of extensions to the...

Hi John, They should do - they are standard tyre pumps that I use successfully to pump up the tyres on the van ok :) I've just tried removing the inner core of the valve completely - same result, so I am guessing either the entire schrader valve is buggered, or there's a blockage somewhere?

The pressure in my CH system has been fluctuating a bit more than usual recently, so thought I'd check the pressure in the expansion vessel. Reading was zero. No water leaking from schrader valve, and "pinging" the side of the vessel sounds hollow, so I'm thinking the diaphragm may be ok...

Thanks very much @Iddy ! Couldn't quite work out what you were getting at, but checked the wiring, and your explanation also led me to the following thread: https://www.diynot.com/diy/threads/need-help-understanding-my-s-plan-wiring.516302/ which talks about the same issue in more detail. Turns...

Nice, thanks - will check. It looked ok when I first looked, but with your explanation I can have a closer check. Will report back - thanks

Question for the assembled mega-brain... I am trying to get my head around the heating system in our recently purchased home. I'm a fairly competent DIYer, not a heating engineer, and I know not to mess with anything I don't understand, so at the moment just seeing how it all works. Our home was...