For volumetric feeding applications, the Tuf-Flex Series Feeders handle a wide variety of fine powders, flakes, granules, chips and pellets. Designed with a unique form of agitation, they are manufactured with a Tuf-Flex vinyl hopper that is agitated on the exterior by two alternating paddles. The paddle action gently massages the material down into the metering screw, eliminating ratholing and bridging, while conditioning material into a consistent bulk density. The helix flights are filled uniformly, resulting in high accuracy. Models are available in sizes accommodating feed rates from .000017 to 280 cu ft/hour.