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Minimum pressure to operate a toilet fill valve

Discussion in 'Plumbing and Central Heating' started by Fallout, 28 Jul 2020.

  1. Fallout

    Fallout

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    Does anyone no roughly the minimum pressure required to operate a toilet flush valve? Thanks
     
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  3. denso13

    denso13

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    A flush valve? No pressure is required, the mechanism lifts and the cistern empties into the pan. Not sure what you mean.
     
  4. terryplumb

    terryplumb

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    Trick question .title refers to fill valve and content of post refers to flush valve.
    Answer to both is not very much, roughly !!
     
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  5. Fallout

    Fallout

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    Sorry I ment a fill valve.
     
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  7. Fallout

    Fallout

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    Would 0.2 bar do it?
     
  8. denso13

    denso13

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    Yes, low pressure ones would work.
     
  9. Fallout

    Fallout

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    Thanks its a grohe concealed cistern one, any idea if these are low pressure? I'll ring technical tomorrow.
     
  10. Madrab

    Madrab

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    A lot of the valves are low pressure by default and then you either insert or remove a filter/reducing insert supply dependent.
     
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