An item that does exactly what it says it will, the McAlpine Air Admittance Valve is a valuable addition to any of your bathroom fixtures and fittings.
McAlpine VP50 Ventapipe 50 Air Admittance Valve with 2" Universal Outlet
Ventapipe 50 with 2" universal outlet
Can be used with: 2" pipe
Complies with standard: BS EN 12380:2006
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 in accordance with BS EN 12056-2:2000