McAlpine Ventapipe 50 Air Admittance Valve for 3in and 4in p

For use in above ground drainage systems to provide a means of ventilation under conditions of reduced pressure when ventilating pipes are terminated inside buildings. For use in above ground drainage systems Enables ventilating pipes to be terminated inside the building thereby avoiding roof penetration Allows greater flexibility when installing additional appliances to existing drainage systems Ventapipe eliminates problems of freezing associated with external pipes Is suitable for use with either plastic or metal pipes Air flow capacity is 8.9 l/s BS EN 12380:2005