VT Corp offers Flap-Gate Feeder Gravity Flow Packer. VT Corp has obtained ISO 9001:2000 certification. Flap-Gate Feeder Gravity Flow Packer is a gravity feed packer specifically for granular products like sugar, chemicals, plastic, sponge iron, food grains etc. Gravity Flow Packer is equipped with redispensing feature. Flap-Gate Feeder Gravity Flow Packer supplies special lining of hopper to suit material characteristics like corrosive / abrasive etc.