McAlpine Re-sealing Bottle Trap With 75mmm Water Seal – 1 1/4″

• 1 1/4″ connection
• 75mm Water Seal
• Fits all 1 1/4 inch plastic pipe to BS EN and BS EN 1329-1:2000, metric or imperial copper pipe or lead pipe
• Incorporates Multifit connection ensuring a secure seal is made between the pipe and fitting wall using the internal multifit and friction washers
• Manufacturers Code – McAlpine A10R

Operation of a resealing bottle trap

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 bypass columns thus breaking the syphonic action. The difference between an anit-syphonic trap and resealing trap is that the air is drawn through the inlet of the trap and not through the non-return valve. This gives the advantage of simplicity with no mechanical action ensuring retention of adequate water seal even under extreme syphonic conditions. The need for secondary ventilation is also eliminated.