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Resealing Bottle Trap Vs Bottle Trap

Discussion in 'Plumbing and Central Heating' started by self builder 123, 23 Jan 2009.

  1. self builder 123

    self builder 123

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    Hi

    I understand that a resealing bottle trap is designed so that the water in the trap can not be "pulled" due to syphonic action.

    What actually makes a bottle trap resealing ?

    How does the design differ to a standard bottle trap ?

    Cheers
     
  2. kevplumb

    kevplumb

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    its got an air admittance valve on the outlet :idea:
     
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  4. self builder 123

    self builder 123

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    Hi Kevplumb

    MacAlpine make a Silentrap which has an air admittance valve on the outlet, however they also make a resealing trap.

    How does the resealing trap work ?
     
  5. TicklyT

    TicklyT

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    It looks to me as if they have made the 'bottle' section larger so a partial vacuum can't pull enough water out of the trap to break the seal.
     
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