Hello
I'm fairly competent with figuring out most plumbing work in the house, but this has me stumped. My pipes bang a lot... If I open-shut any cold water tap and there's a bong. When the toilets finish filling there's a final bong when the inlet valve close too.
I have a megaflow and it is kept <2bar but regularly drops to 1bar over a couple weeks.. the tundish is always dry.
Thinking that I might have to put in a water hammer arrestor, I thought that I must have an expansion vessel somewhere. I recently discovered it in the loft hidden behind the old disused water tank lying in a tangled mess of pipework on lying on the loft insulation. See attached photos.
I thought that my expansion vessel might be dodgy, but I've given it a good tap and it sounds dull at the water end and hollow at the air end. I gave the Schrader valve a very quick blast and it hissed air, so I think the vessel is fine. It was stamped as manufactured 2006 rated at 4bar.
I can't figure out the pipework though... whether it is in the loop, on a spur and if one of the pipes is a drain for the pressure relief (rated at 3bar).
The gauge here is actually maxxed out. I thought it read 0bar until i realised that the black needle has gone all the way around. Letting the tiny amount of air out of the capillary vent and the gauge did move slightly, so I think that's right.
So many questions....
What the heck is going on with the messy pipework?
Where is the relief valve going to dump out to?
Should that bypass remain closed (as it is) and what is it used for.
Is that pressure reading acceptable? Do I need to bleed something?
(I will find plumber if this starts getting complicated!!)
I'm fairly competent with figuring out most plumbing work in the house, but this has me stumped. My pipes bang a lot... If I open-shut any cold water tap and there's a bong. When the toilets finish filling there's a final bong when the inlet valve close too.
I have a megaflow and it is kept <2bar but regularly drops to 1bar over a couple weeks.. the tundish is always dry.
Thinking that I might have to put in a water hammer arrestor, I thought that I must have an expansion vessel somewhere. I recently discovered it in the loft hidden behind the old disused water tank lying in a tangled mess of pipework on lying on the loft insulation. See attached photos.
I thought that my expansion vessel might be dodgy, but I've given it a good tap and it sounds dull at the water end and hollow at the air end. I gave the Schrader valve a very quick blast and it hissed air, so I think the vessel is fine. It was stamped as manufactured 2006 rated at 4bar.
I can't figure out the pipework though... whether it is in the loop, on a spur and if one of the pipes is a drain for the pressure relief (rated at 3bar).
The gauge here is actually maxxed out. I thought it read 0bar until i realised that the black needle has gone all the way around. Letting the tiny amount of air out of the capillary vent and the gauge did move slightly, so I think that's right.
So many questions....
What the heck is going on with the messy pipework?
Where is the relief valve going to dump out to?
Should that bypass remain closed (as it is) and what is it used for.
Is that pressure reading acceptable? Do I need to bleed something?
(I will find plumber if this starts getting complicated!!)