CONTAINED TRANSFER OF MATERIALS

摘要

A coupler assembly (6) for use in the transfer of powdered material from a container such as a bag or bottle comprises an active valve assembly (8) having an active valve and docking part and a passive valve assembly (7) which comprises a passive valve and a complimentary docking part, the two docking parts enabling the two assemblies to be secured together such that both the passive valve and active valve can be opened to provide a passage for powder through both valves. The coupler assembly further includes a spigot (9) that is movable between a first position in which it allows the active valve (8) to close with the spigot (9) on the opposite side of the active valve (8) to the docking part which engages the passive valve assembly (7), and a second position in which the active valve (8) is held in an open position and the spigot (9) provides a passage for material passing through the passive valve (7) to flow through the active valve (8) whilst substantially preventing exposure of at least part of the active valve (8) to any of the flowing material.