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Thread: swapping out an anti-vac valve on VBM Super

  1. #1
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    swapping out an anti-vac valve on VBM Super

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi All,

    Ive had a search through the forum to see if I can locate a how to for replacing an anti-vac valve on the VBM.

    so far, no success which leads me to 2 possible conclusions:

    1) it really is as simple as it looks - unscrew, throw away, screw in replacement.

    or

    2) You fool! only qualified engineers with 20 years + advanced boiler maintenance should even considder attempting such a feat (and they best be well paid up on their life insurance before trying)

    so... which is it?

  2. #2
    A_M
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    Re: swapping out an anti-vac valve on VBM Super

    Neither..

    1: Unscrew, clean up any scale and toss away the old O-ring

    2: Replace o-ring, screw back in.

    PS. Use a tea light casing to make a neat little spill catcher, if you do not already have one ;)

    Quote Originally Posted by 7A455F4F495E4D2C0 link=1279543981/0#0 date=1279543981
    You fool! only qualified engineers with 20 years + advanced boiler maintenance should even considder attempting such a feat (and they best be well paid up on their life insurance before trying)
    Only if ya start touching any thing electrical... The moment ya do... Then get it tested before powering back on.



  3. #3
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    Re: swapping out an anti-vac valve on VBM Super

    Thanks for the swift response AM.

    from what youve written, its only a case of replacing the o-ring and not the entire valve? :o

    or is that just a cost saving interim step to try to fix any issues without going the whole hog?

  4. #4
    A_M
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    Re: swapping out an anti-vac valve on VBM Super

    Quote Originally Posted by 4C7369797F687B1A0 link=1279543981/2#2 date=1279545322
    Thanks for the swift response AM.

    from what youve written, its only a case of replacing the o-ring and not the entire valve? *:o

    or is that just a cost saving interim step to try to fix any issues without going the whole hog?
    Depends on what the issues are..

    In many cases, it is just a clean that might be required..

    OR


    http://coffeesnobs.com.au/YaBB.pl?num=1226636581/4#4


    For a close up of a Anti Vac valve... http://coffeetime.wikidot.com/vacuum-breaker

  5. #5
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    Re: swapping out an anti-vac valve on VBM Super

    unless your haqppy to take off and put on a few times til you get it right, id just buy a whole new anti vac valve. like you say, unscrew and put the new one on. it might havve copper washer, or you might need some plumbing tape or pipe sealant.

  6. #6
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    Re: swapping out an anti-vac valve on VBM Super

    Quote Originally Posted by 5D727B796E517D727D7B79717972681C0 link=1279543981/3#3 date=1279589367
    For a close up of a Anti Vac valve...http://coffeetime.wikidot.com/vacuum-breaker *
    Now THAT is exactly what Ive been looking for! Thank you kindly.

    ... and if id known it was also called a vacuum breaker i probably could have found this without bothering you :-[



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