Hi all, i've been doing a bit of DIY plumbing, mainly fitting a new bath and sinks.
The first time I turned the water off, hot & cold, I turned off the mains, then turned off the gate valve supplying the hot water cylinder from the cold water tank. I ran the cold water for a bit and it stopped very soon, as expected. I actually ran a bath with the hot water, and I understood this was normal as it was emptying the hot water cylinder. But when the pressure died down there was always a little bit of hot water trickling out the taps, and if I closed the taps then the pressure would build up until I opened the hot tap again and quite soon it would return to a trickle.
Now i've turned all the water back on again, and everything is working fine. But since then i've had to turn the water off again to do some other work. So i've repeated the above - turn off mains, turn off gate valve supplying cylinder - but this time, and every other time since, when I run the hot water tap to drain the cylinder, it only runs for a few seconds before returning to that constant little bit trickling out - as though the cylinder doesn't have any water in it.
So, two questions really:
1) Why is the cylinder not draining anymore?
2) Why is there a constant trickling, and how do I stop it completely?
Been losing a bit of sleep over this one!
Thanks in advance!
The first time I turned the water off, hot & cold, I turned off the mains, then turned off the gate valve supplying the hot water cylinder from the cold water tank. I ran the cold water for a bit and it stopped very soon, as expected. I actually ran a bath with the hot water, and I understood this was normal as it was emptying the hot water cylinder. But when the pressure died down there was always a little bit of hot water trickling out the taps, and if I closed the taps then the pressure would build up until I opened the hot tap again and quite soon it would return to a trickle.
Now i've turned all the water back on again, and everything is working fine. But since then i've had to turn the water off again to do some other work. So i've repeated the above - turn off mains, turn off gate valve supplying cylinder - but this time, and every other time since, when I run the hot water tap to drain the cylinder, it only runs for a few seconds before returning to that constant little bit trickling out - as though the cylinder doesn't have any water in it.
So, two questions really:
1) Why is the cylinder not draining anymore?
2) Why is there a constant trickling, and how do I stop it completely?
Been losing a bit of sleep over this one!
Thanks in advance!