Connection Size B3 inchConnection Size A3 inchERP (Energy Efficiency)NTypeFittings - Valves & GaugesSuitable forWaste Pipe SystemsPack Quantity1Maximum Pressure0.5 barMaterialRubber SealInlet Size4 inDiameter3 inch x 3 inchColourGreySupplier Part NumberVP50PRange DescriptionAir Admittance ValvesBrand NameMcalpine