Just a quick question about isolating valves. In our airing cupboard theres a valve dircetly either side of the CH pump. When you close these valves off, water is still getting into the pump so the valves don't appear to be working.
On the hot and cold feed to the gravity fed shower, again, there is a valve on each one but turning them off doesn't stop the hot and cold going into the shower! (these valves are about 24" from the shower and I've let the shower run to empty the pipes)
The valves in question have a brass body and a red metal wheel tap sort of thing. I'm not sure if isolating valves are the correct name for them, anyway, I've read in the past that these are notoriously unreliable.
Is it possible that I'm getting 4 valves that are'nt working properly here? What sort of life do they have? I'm pretty sure they're about 12 years old and they seem to turning reasonably freely.
On the hot and cold feed to the gravity fed shower, again, there is a valve on each one but turning them off doesn't stop the hot and cold going into the shower! (these valves are about 24" from the shower and I've let the shower run to empty the pipes)
The valves in question have a brass body and a red metal wheel tap sort of thing. I'm not sure if isolating valves are the correct name for them, anyway, I've read in the past that these are notoriously unreliable.
Is it possible that I'm getting 4 valves that are'nt working properly here? What sort of life do they have? I'm pretty sure they're about 12 years old and they seem to turning reasonably freely.