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Auto Fill Valve?

  • 08-02-2019 10:51PM
    #1
    John.G
    Registered Users, Registered Users 2 Posts: 3,916 ✭✭✭


    Has anyone come across this device which seems to be a auto fill (pressure reducing ) valve which I think most plumbers would not advise fitting and left permanently open.

    https://www.flowflex.com/top-up-mate


Comments

  • #2
    DGOBS
    Hosted Moderators Posts: 3,496 ✭✭✭DGOBS


    Better to have a system that doesn't leak. :cool:

    I wouldn't recommend them, and if you had a serious burst pipe imagine the mess, and your house insurance company may take a certain view of it also.


  • #3
    John.G
    Registered Users, Registered Users 2 Posts: 3,916 ✭✭✭John.G


    DGOBS wrote: »
    Better to have a system that doesn't leak. :cool:

    I wouldn't recommend them, and if you had a serious burst pipe imagine the mess, and your house insurance company may take a certain view of it also.

    Totally agree, if expansion vessels are given the correct pre pressure & filling pressure to give a litre or two reserve then this would reduce the frequency of top ups and the temptation to fit these devices in the first place. I am surprised that some boiler manufacturers, even Grant?, advise that the pre pressure & filling pressure be the same thus ensuring no water reserve whatsoever.

    In fairness to the Top UP Mate, a serious burst pipe will not result in the same amount of flooding as a normal PRV, probably because it admits so little water but this isn't explained in their brochure.

    Edit: the attachment may be of interest and you can do your own "sums".


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