The McAlpine WHB-1 has an internal membrane which opens under water pressure to allow discharge to flow freely, then closes to prevent foul odours or sewer gas from entering the property. <p><p> <strong> Features & Benefits: </strong> <br> <ul> <li> Designed to allow full use of storage space below the basin within the cabinet or furniture. <br></li> <li> The valve allows air to be drawn into the discharge waste pipe when negative pressures occur and eliminates the need for secondary ventilation to the discharge pipework. This allows for greater flexibility in the plumbing design. <br></li> <li> McAlpine self-cleaning waste valves have no water seal, so can never dry out through evaporation or lack of use, as the membrane seal remains closed. <br></li> <li> Overall Height: 62mm <br></li> <li> Valve can be easily disassembled and cleaned. <br></li> <li> KIWA Approved. <br></li> </ul>

Brand Name	McAlpine
Manufacturer Model No	61020258