McAlpine 1-1/4″ Space Saver Basin Waste Trap Self Closing WHB-1

Description Designed to allow full use of storage space below basin The internal membrane opens under water pressure and then closes to form seal Prevents foul odour or sewer smells entering the building The valve allows air to be drawn into the waste pipe when negative pressures occurs Eliminates the need for secondary ventilation to the pipework Allows for greater flexibility in the plumbing design No water seal, will not dry out through lack of use or evaporation Easily cleaned without having to disassemble the pipework Overall height 62mm To service simply remove the split pin at the front of the valve, take out the plug and membrane and clean in hot soapy water. Reassemble and relocate the split pin in the slot provided.