Auger valve uses screw feed principles

NORDSON EFD 794-TC Series auger valve uses screw feed principles combined with precision time and pressure controls to dispense accurate, repeatable amounts of particle-filled materials such as thermal interface materials and other highly abrasive pastes. Product provides a more robust, long-lasting solution for abrasive materials and other aggressive particle-filled materials than most existing auger valves on the market.

click here for more info