expansion tank

Hello, I live in a two floor semi with a gravity fed conventional gas fired boiler (Potterton Kingfisher MF). The boiler is fed cold water from the loft water reservoir tank (which also feeds the cold water taps in the bathroom). There is an expansion vessel attached to this cold water feed to...

Hi all, I need to replace a 3/4" union valve lockshield with a 1/2" on a bathroom heat leak radiator. Usually I bung the header tank, release pressure, and quickly swap the valves over. However, as its an old school heat leak setup I'm unsure if I need to adopt a different approach due to the...

Hi, I have just had an oil heating system fitted which is a 36KW Grant Vortex Blue Combi with built in 25L expansion tank. I am trying to work out if I need an additional expansion tank (I have an additional 25L BOSS vessel that I could use if necessary). I have quite a large bungalow and have...

hi, my expansion tank overflow has been dripping, i didnt get round to fixing it. now the drip has turned into an icicle, hence stopping the water escaping. the ball valve is fully submerged (i also noticed a rainbow like colour in parts of the tank as if there was something oily ??) im...

I have a boiler (Worchester Greenstar Danesmoor System Utility 18/25) which is plumbed to a large Akvaterm cyclinder. When the system is cold, the pressure gauge on the expansion vessel reads 0.75 bar. When the system has been running for a while the vessel gauge reads anywhere between 1.5 bar...

I moved into a 1980's house a few weeks ago. The house has a Ideal Heat 30 boiler in kitchen with cylinder in airing cupboard and tanks in loft. Under boiler there are 3 motorized valves, 2 for heating and 1 for HW. The 2 heating valves are wired together into stat (as there arent seperate zones...

I noticed water coming out of a light socket on floor below where water tank and expansion vessels are. Looking in the cupboard it was obvious to see the silver flexi hose that connects one of two expansion vessels was leaking and judging by the amount of water on the floor it had for a day or...

Hello everybody, I am experiencing an annoying and on-going problem with my central heating, and I was wondering if somebody could help me understanding a bit more of what's going on! A bit of background: -Type of system: Vented system, with F/E tank in the loft, combined feed and vent...