Details

Resealing Bottle Trap

Resealing Bottle Traps are an alternative to Anti-Syphon Traps (Silentraps) and may be used in similar circumstances.

Operation

When the Trap is subject to syphonic conditions the automatic hydraulic action allows air to be drawn through the inlet of the Trap and through the by pass columns thus breaking the syphonic action. On cessation of syphonic conditions the remaining water falls back to reseal the Trap. The Silentrap ventilates by drawing air through a Non-Return Valve whereas the Resealing Trap ventilates by drawing air through the inlet of the Trap and through the water seal.

Advantages

  • The simple non-mechanical action ensures retention of adequate water seal even under extreme syphonic conditions.
  • Eliminates the need for secondary ventilation.
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Anti-Syphon Traps (Silentrap)

Operation

Whenever syphonic conditions develop, the negative pressure causes the Valve to rise, allowing air to be drawn into the discharge pipe. The pressure is thereby neutralised before it can have any effect on the water seal within the Trap. On cessation of the syphonic action, the Valve closes, making the Silentrap air and watertight.

Advantages

  • The major advantage of the Silentrap over Resealing Traps is that because the air is drawn through the Valve and not through the water seal, gurgling is eliminated and a much quieter discharge is ensured.
  • Eliminates the need for secondary ventilation.
  • Silentrap Valves are available on a wide range of Bottle, Tubular and Bath Traps.
  • Silentraps allow for greater flexibility in plumbing design.
  • The products below simply show that the Silentrap Attachment is available on Bottle, Tubular and Bath Traps.
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Multifit Connections

  • Most McAlpine Trap Outlets and Fittings have Multifit Connections.
  • Multifit Connections suit all plastic waste pipes to BS EN 1451-1-2000 and BS EN 1329-1:2000, copper pipe (metric or imperial) and lead pipe.
  • The moulded Internal Sleeve of the Connection, centres and supports the pipe. The Multifit and Friction Washers ensure a secure seal is made between the pipe and the wall of the Fitting. When the compression nut is turned hand tight the best possible mechanical joint is complete.
  • If a plastic pipe is undersize, or out of shape, the end may require to be warmed to enable it to be pushed over the internal sleeve.
  • For technical reasons, it is not possible to manufacture Multifit Connections on all traps and fittings. Where Multifit is not provided the description Universal is applied. The only difference being that Universal does not have an Internal Sleeve within the Trap or Fitting.
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