Help please its driving me mad!

[plumben]

Hi so are you saying I don't need a prv as its not going to solve the problem what I actually need is shock arrestors fitted to every appliance and toilet that causes the bang?

Usually its one outlet causing the problem not all of them, sometimes it can be a ball valve that the washer is going on

 

[wiggers]

Myself mate I would start at the stopcock put a new one on there about £7 this is highly likely the culprit. My company own 18000 houses and worked on thousands of them have never fitted a shock arrest or yet!
Failing that wc fill valve or ball valve in CWSC in loft ?
Give these a try I'm sure it will resolve the issue
Good luck

 

[JACKY]

I went to a customer a while back that had the exact problem, he was a bit of a diy expert and had clipped the washing machine hose under the sink unit, i pulled the hose out of the clips and the banging noise stopped instantly. Always make sure your WMhoses have plenty of space for movement.

 

[Darren]

Myself mate I would start at the stopcock put a new one on there about £7 this is highly likely the culprit. My company own 18000 houses and worked on thousands of them have never fitted a shock arrest or yet!
Failing that wc fill valve or ball valve in CWSC in loft ?
Give these a try I'm sure it will resolve the issue
Good luck

Thanks for the advice, I'm waiting for the PRV to arrive but in the meantime I'll change the stopcock, can you explain how this could be the cause, it's not leaking or seized.

Cheers.

 

[Darren]

Quick update whilst house is quiet and no water being used, I've isolated washer at ball valve and dishwasher at ball valve flushed offending toilets and I still get 1 bang as they finish filling. I've opened these ball valves back up and turned my stopcock down to where I have just enough flow to use showers and fill cisterns back up in reasonable time and the bang has gone? I'm thinking it's not advisable to leave this stopcock nearly closed so is it still pointing to a faulty stopcock that needs changing or is it a PRV I need after all? Sorry for all the questions, I will replace what ever needs to be replaced but no point in spending a fortune if there is one fix.
Thanks,
Darren.

 

[plumben]

New stop tap is where I would start

 

[Darren]

New stop tap is where I would start

Cheers that's what I'll do.

 

[Darren]

New stop tap fitted all lines drained and filled back up.... Still got the bang?

 

[Darren]

New stop tap fitted all lines drained and filled back up.... Still got the bang?

Fitted new stop tap but still have this one clunk when each toilet stops filling the cistern, washing machine, dishwasher and pressure washer shut off. If I close the stop tap a little it stops but toilets take a while to fill and if anyone turns a tap on showers and taps upstairs turn to a dribble.

 

[Tonycane]

Any sudden stop in flow will resonate through a faulty valve. I would be ruling out each toilet fill valve one by one, do you have isolators fitted at each toilet? If so turn them all off and try to replicate the clunk. Do you have a combi or gravity hot water system?