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HELP!!!! INCREDIBLY NOISY PLUMBING

 
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MCLEOD52



Joined: 11 Sep 2003
Posts: 2
Location: SCOTLAND
PostPosted: Thu Sep 11, 2003 9:51 pm    Post subject: HELP!!!! INCREDIBLY NOISY PLUMBING Reply with quote
Sad

Frequently when running hot water pipes start to rattle and making loud droning noises. If the cold water is turned on this will stop or if pressure is adjusted either way it will stop but always eventually returns. Our system works from mains pressure (ie no cold water tank in loft). Please help it is driving us mad!!!!!
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thescruff
Moderator


Joined: 03 May 2003
Posts: 4619
Location: Bath
PostPosted: Thu Sep 11, 2003 9:59 pm    Post subject: Reply with quote
Got any plastic ball valves? if so trace it back to them.

A worn tap will also cause virbration problems.

scruff. Cool
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MCLEOD52



Joined: 11 Sep 2003
Posts: 2
Location: SCOTLAND
PostPosted: Fri Sep 12, 2003 12:48 pm    Post subject: Reply with quote
Where do you find plastic ball valves and what do they look like.
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thescruff
Moderator


Joined: 03 May 2003
Posts: 4619
Location: Bath
PostPosted: Fri Sep 12, 2003 1:25 pm    Post subject: Reply with quote
I don't suppose your cylinder is an "ariston" by any strange coincidence,

We have a similar problem on another forum, below is a reply from Ariston that may be worth checking out.

Hi all, thought you may like to know the response from Ariston. I have not tried the suggested cure but will let you know.

"The problem you mention is a standard one when the mains supply pressure is not very good. The expansion vessel which accompanies the cylinder is pre-pressurized at 3.5 bar on the basis that that would be the usual charge pressure in the cylinder. If the mains pressure is significantly lower, when the cylinder first discharges the 'expanded' pressure i.e. when used first thing in the morning etc., the expansion vessel and the pressure reducing valve letting water into the cylinder 'fight' giving rise to the juddering noise. The cure is to let the excess air pressure out of the expansion vessel, i.e. drop the charge pressure from 3.5 bar to about 1/4 bar above the mains pressure".


A ball valve is the thing the water comes out of in the Wc cistern.

scruff. Shocked
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Dan Robinson
Moderator


Joined: 07 Sep 2003
Posts: 310
Location: North London & Herts & A1 Corridor
PostPosted: Fri Sep 12, 2003 8:39 pm    Post subject: Reply with quote
It will probably be a worn ball valve on the cold water storage tank in the attic.

Alternatively the old water mains pipe connected to the sotorage tank needs additional support.
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thescruff
Moderator


Joined: 03 May 2003
Posts: 4619
Location: Bath
PostPosted: Fri Sep 12, 2003 9:03 pm    Post subject: Reply with quote
Oooops he ain't got one mate.

scruff. Embarassed
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Dan Robinson
Moderator


Joined: 07 Sep 2003
Posts: 310
Location: North London & Herts & A1 Corridor
PostPosted: Fri Sep 12, 2003 9:07 pm    Post subject: Reply with quote
DoH!!!!!!!!!!


Sorry missed that bit... it has been a week from hell...

My bad...
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