Mcalpine VP100E 110mm Air Admittance Valve Black

Ventapipe 100 Internal /External with dual-fit synthetic rubber finger seal outlet for 4"/110mm pipe
Fits 4"/110mm soil pipe
Dual fit synthetic rubber finger seal outlet
A1 rated
Can be installed above or below the flood level of connecting appliances.
Air flow capacity of 40 l/s
Incorporates a stainless steel mesh in the air intake
Complies with BS EN 12380:2002
McAlpine recommend that Air Admittance Valves be installed internally within the building.
Range of Temperature: -20C to +60C