This screw feeder will feed product at a specified rate, typically for batching or mixing finite amounts of material into receivers or hoppers. STANDARD FEATURES Perfect for small to medium feed rates for food, pet food and plasticsModular system that can be adapted to different upstream sourcesReversible with rear drain port for easy product changeoversClean design allows for easy dismantling and cleaning of internal partsRobust air purge seal and outboard bearingMinimize surfaces and components for compact and clean deviceMotor is mounted on a hinged mount plate that swings away for access to bearing, seal and removal of the screwPositive shaft location with no galling of screw quill shaft when removing and replacingZero clearance for minimum air usageSeal element rotates with the shaft to minimize wear surfacesBearing and shaft seal can be left on shaft when screw is removed for cleaningAir purge solenoid pre-mounted to drive flange assemblyOptional shut off valves for 3", 4" and 6" feeders