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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Vaillant VCW GB 242E Over pressure valve leaking
Vaillant VCW GB 242E Over presure valve leaking - when the heating is
off and the pressure is set to 1 bar - The over pressure 'saftey valve' is leaking slightly .. ie the system pressure is slowly dropping and the there is a slow 'drip' from the vent pipe out side .. I see the valve appears to be part of the boiler - can be un-screwed - leaving the housing behind .. Question is ... can it be serviced ? or is it a sealed unit ? if you unscrew the 'insert' do you also need to remove the housing to change it ? Just need a idea before I make a start ! Tnx G , |
#2
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Vaillant VCW GB 242E Over pressure valve leaking
On Thu, 18 May 2006 06:44:17 -0700, Graham wrote:
Vaillant VCW GB 242E Over presure valve leaking - when the heating is off and the pressure is set to 1 bar - The over pressure 'saftey valve' is leaking slightly .. ie the system pressure is slowly dropping and the there is a slow 'drip' from the vent pipe out side .. I see the valve appears to be part of the boiler - can be un-screwed - leaving the housing behind .. Question is ... can it be serviced ? or is it a sealed unit ? if you unscrew the 'insert' do you also need to remove the housing to change it ? Just need a idea before I make a start ! You would replace this with one from a boiler spares shop (real or online). The VCW is almost unique in having a 22mm discharge pipe on a boiler. I've never had to replace one of these valve yet and there are a lot of VCWs around. -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards |
#3
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Vaillant VCW GB 242E Over pressure valve leaking
In message .com,
Graham writes Vaillant VCW GB 242E Over presure valve leaking - when the heating is off and the pressure is set to 1 bar - The over pressure 'saftey valve' is leaking slightly .. ie the system pressure is slowly dropping and the there is a slow 'drip' from the vent pipe out side .. I see the valve appears to be part of the boiler - can be un-screwed - leaving the housing behind .. Question is ... can it be serviced ? or is it a sealed unit ? if you unscrew the 'insert' do you also need to remove the housing to change it ? 1/ Are you sure that it's the pressure valve leaking ? 2/ if so, you could try opening it - give it a good blast, you could have some crap on the seating 3/ You really should have enough grey matter to answer regarding replacement or repairability, it's the sort of thing that should be obvious to anyone with a clue -- geoff |
#4
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Vaillant VCW GB 242E Over pressure valve leaking
In message .uk, Ed
Sirett writes On Thu, 18 May 2006 06:44:17 -0700, Graham wrote: Vaillant VCW GB 242E Over presure valve leaking - when the heating is off and the pressure is set to 1 bar - The over pressure 'saftey valve' is leaking slightly .. ie the system pressure is slowly dropping and the there is a slow 'drip' from the vent pipe out side .. I see the valve appears to be part of the boiler - can be un-screwed - leaving the housing behind .. Question is ... can it be serviced ? or is it a sealed unit ? if you unscrew the 'insert' do you also need to remove the housing to change it ? Just need a idea before I make a start ! You would replace this with one from a boiler spares shop (real or online). The VCW is almost unique in having a 22mm discharge pipe 22mm? Are you sure? Mine was 15mm -- geoff |
#5
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Vaillant VCW GB 242E Over pressure valve leaking
Lol well the jive is .. not having seen the inside of the valve - it
would be nice to know if the replacement consists simply of the removable part that can be un-screwed from the main housing .. or am in for the bigger job of letting go the vent pipe as well ..if its simply a needle valve then its possible it may be 'cleaned' Tried a few times to clear - by pressurising the system and venting .. no joy .. still have a slow drip from the vent pipe out side .. the 22 mm is the valve housing . o/p pipe is 15 mm |
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