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baxi boiler prv leaking and pressure dropping?


 
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RACH3

from United Kingdom

Joined: 12 Jun 2010
Posts: 1
Location: Northumberland,
United Kingdom

PostPosted: Sat Jun 12, 2010 9:42 am Reply with quote

I have recently replaced a radiator and topped up my baxi boiler pressure. Then noticed a leak coming from radiator (only small) and when checked the pressure was at 3.5. I used the prv (red cap) to release the pressure and now the prv is still dripping, not loads but it is causing pressure to slowly drop on boiler! Also there is still a very small slow leak coming from radiator on one side. What is the problem? Do I need to get someone out to sort the prv problem?
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adlplumbing

from United Kingdom

Joined: 09 Dec 2009
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Location: Lancashire,
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PostPosted: Sat Jun 12, 2010 11:11 am Reply with quote

some thing got stuck inside the prv stoping it shutting down properly
could fixed by removing it and cleaning or replacing it not hard job
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RACH3 (12 Jun 2010)
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gas112

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PostPosted: Sat Jun 12, 2010 1:02 pm Reply with quote

Try spinning it a few time muck on the valve seat can sometimes be cleaned off doing that
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RACH3 (12 Jun 2010)
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Benjibalz

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Joined: 04 Aug 2008
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Location: Bath,
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PostPosted: Sat Jun 12, 2010 1:15 pm Reply with quote

Open the filling loop and the prv at the same time to flush mains water through it, should clear any c**p.

Sometimes they just wont stop dripping though and need to be changed.

The prv should normally discharge a 3bar so if the pressure in the boiler was 3.5bar its faulty and needs replacing sharpish.
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RACH3 (12 Jun 2010)
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matt1e

from United Kingdom

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Location: Tyne and Wear,
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PostPosted: Sat Jun 12, 2010 2:21 pm Reply with quote

Benjibalz wrote:

The prv should normally discharge a 3bar so if the pressure in the boiler was 3.5bar its faulty and needs replacing sharpish.


and so does your expansion vessel (or it may just need recharged if your lucky) unless the excess pressure was caused by you putting in to much when you changed the rad

Matt
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