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Tribune HE pressure relief valve

Discuss Tribune HE pressure relief valve at UK Plumbers Forums; The pressure relief valve on my Tribune HE tank was releasing copious amounts of water onto my outside path, I have renewed the valve. Initially the valve worked ok with ...
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    Default Tribune HE pressure relief valve

    The pressure relief valve on my Tribune HE tank was releasing copious amounts of water onto my outside path, I have renewed the valve. Initially the valve worked ok with no water being released, but now after some 6 weeks the new valve is doing the same, there is a constant flow from the outlet onto my path. The valve that is passing water is the large valve on the side of the tank, the other 2 valves are not passing.

    Does anyone have an answer to this problem, could the new valve be faulty? Or, is there a fault elsewhere in the system?

    The system is 3 years old in a new build house.

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    Default Re: Tribune HE pressure relief valve

    Well the pressure release valve is a safety fitting,installed to protect the unit,pipework and you,the valve is a temperature and pressure release valve and if operated ,it will of done so for a reason other than a fault in its self,so could be cylinder over heating,mains pressure to high,expansion vessel re-priming ect
    If maintained the right hands,by a qualified person,these are safe units,if messed about with by others can cause damage and injury,would suggest you get someone in who knows the system and unit to repair and adjust safely

    imho

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    Default Re: Tribune HE pressure relief valve

    exactly as puddle has said, also unvented cylinders are supposed to have a 12 month annual inspection.
    If the TPRV is letting by then there is a fault do not just change it for another one get a proffesional in to find the fault Unvented cylinders make extremley good bombs just look on you tube under mythbuster unvented cylinder!!!!!!!!!!!!
    if its not dangerous Im not doing it
    im not here to be helpfull! How am I doing?

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    Default Re: Tribune HE pressure relief valve

    Hi, I am working on another cylider with the same problem, check the charge in the expansion vessel, should be 3 bar, see if you can feel how heavy it is becuse it may be full of water and there is a risk the weight will cause it to fall off the wall and maybe break the toilet like the one I'm repairing. You can no longer but the PRV seperately, you have to by the pressure reducing valve assembly which now incorporates the PRV. You might be able to salvage the old PRV if you clean it with a descaler while holding it open. You have to have an unvented cylinder ticket to work on these as if they go wrong they can be very dangerous.

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    Default Re: Tribune HE pressure relief valve

    Hopefully the OP has had someone who knows what they're doing to sort this by now.
    The only thing I'd suggest soaking in descaler is the twit who suggested it ! It's a safety device ffs.
    unguided1 likes this.

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    Default Re: Tribune HE pressure relief valve

    Quote Originally Posted by BLOD View Post
    The only thing I'd suggest soaking in descaler is the twit who suggested it ! It's a safety device ffs.
    totally agree BLOD people who follow this advice need shooting. with the superheated steam that will result.
    GSR?want gas safety or boiler repair advice?we will check out that your genuine via the gas safe website,so please don't be offended when we ask for your details. diyers, bodgers, odd job people and have a go heroes need not apply

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    Default Re: Tribune HE pressure relief valve

    OK, according to the Tribune service instructions if the PRV is passing you are supposed to remove it and check the seat for damage, if there is any evidence of damage to the seat then you are supposed to replace the PRV, but a damaged seat does not make the valve dangerous it only causes a nuisance by passing water. Assuming the seat is undamaged and is only being held open by a deposit of calcium or grain of sand, how does removing the deposit then make the PRV dangerous? As long as the valve re-seats after cleaning there shouldn't be a problem, sometimes just holding the valve open for a few seconds will clear the cause of the problem. I know this works safely, because I have cleaned several PRV's on boilers over the years without any problems what so ever. Also bearing in mind the PRV is now part of a unit that costs over £70 +vat + fitting, an attempt at re-seating the valve seems worth while to me, especially as the system is only 3 years old. I still suspect that the expansion vessel has lost its charge.

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    Default Re: Tribune HE pressure relief valve

    Sorry casaco, but I stand by what I said and do not think people should be advised to "salvage" safety devices on an open forum.

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    Default Re: Tribune HE pressure relief valve

    I agree with BLOD on this one
    if its not dangerous Im not doing it
    im not here to be helpfull! How am I doing?

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    Default Re: Tribune HE pressure relief valve

    When it comes to safety it should always be replace rather than repair.

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    Default Re: Tribune HE pressure relief valve

    Where's the danger, the expansion vessel has probably lost it's charge, the PRV is doing it's job, they only fail to safe not to danger, if the spring breaks you lose pressure, if they don't seat you lose pressure, the only thing that can hold them closed would be if they froze up or deliberate sabotage. Still can't see any danger in attempting to re-seat the PRV if the seat is undamaged, bearing in mind the chap said it was a new one anyway.

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    Default Re: Tribune HE pressure relief valve

    if the chap said it was a new one any way, first of all who replaced it secondly if it is a replacement and the expansion vessel is ok there must some other fault on the system, why didnt the plumber who worked on it originally find the fault and why has he got another plumber in when the origanal plumber should be putting his work right??
    if its not dangerous Im not doing it
    im not here to be helpfull! How am I doing?

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