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Hi all, I am trying to put TRVs on my radiators. I've got 10mm pipes so I've bought Drayton TRV4 with the included 10mm reducing olive (whatever it's called, it looks like this http://www.screwfix.com/p/reducing-set-15-10mm/70435). I'm assuming it acts like an olive and no other olive is...

Hi all. I have some corrosion on the isolation valves for my central heating pump. I'll change the valves but I was wondering if it was a sign of something more serious. e.g. I was worried there might be an electrical fault in the pump causing current to flow to the earthed pipes and causing...

Hi all, I have a 20 year old gravity fed system in a house I moved into last year and the other day my honeywell V4073A 3 port valve got stuck with its lever all the way to the left and no central heating. I moved it all the way to the right "manual open" without latching it and after the...

Hello all, As you can probably tell I'm an absolute novice and I've already broken the golden rule of forums by not searching first but I have to go to work in a few minutes. I have a gravity feed+expansion boiler system with a hot water tank and a non-condensing boiler that's probably...