The Evolution Aqua 3/8 inch BSP Mini Ball Valve Air Fitting are suitable for use with the Evolution Aqua EazyPod and Nexus filters, these Evolution Aqua 3/8 inch BSP Mini Ball Valve Air Fitting have 2 female 3/8 inch BSP screw threads which will accept the Evolution Aqua 3/8 inch BSP Male Stud Connector Air Fittings (sold separately).
Once these connectors are fitted a Evolution Aqua 12mm air tube can be pushed in to produce an air tight seal.