The Bag dumping station MSCR provides a simple means of introducing sack products and check sieving them into a system. The sack tip and sieve are avaiable in different sizes for ease of cutting and handling of bags. The flip-top powered lid enables ease of opening of the sack tip for access to the screen and cleaning. The sieve unit below has a self-cleaning silicone diaphragm to give a dust-tight closure. The outlet of the station may be connected to mechanical and pneumatic conveyor systems, or simply connected to a mixer inlet or other process equipment.