15-07-2015, 08:21 AM
(15-07-2015, 08:08 AM)Paul_13 Wrote: I just may know it as being something else that's all. I was a bit tired writing that response last night.
If its been dripping intermittently out of the relief valve it's either faulty or there's too much pressure building up in the cylinder
Yes I agree it does seem like too much pressure, which seems to be because of a reduced air gap at the top of the tank so the water can't expand enough when being heated. But I'm not too fussed by losing a small amount of water outside, though my neighbours overflow is next to mine and his doesn't drip. But could that also cause the delay? As I can't find anything about the delay at all which either makes me think it's normal or a rare occurrence lol.
I was wondering/speculating if it could cause a vacuum effect inside the cylinder, like leaving the rad cap on when draining coolant on the car for example, until the pressure drops enough to allow the correct gap and then the water shoots out of the tap and all over the floor/wall/myself/etc...
That could be complete crap though, it just makes sense in my mind lol, but as I say can't seem to find any info on that.As for the relief valve, is it normal to just move a quarter turn and then snap back inwards or does that sound faulty? I was expecting it to have a lot of resistance and have to hold it open whilst spring pressure tried to pull it back to it's original position? Not seen a relief valve like this before as we had a different system at home - one with no pressure at all lol.