A quick-cleaning feature has been added to a rotary valve that feeds powders or pellets volumetrically from a hopper into the feed throat of a compounding extruder.
A quick-cleaning feature has been added to a rotary valve that feeds powders or pellets volumetrically from a hopper into the feed throat of a compounding extruder. The rotary valve from Coperion, Ramsey, N.J., has been redesigned with sides that hinge open. The motor is attached to one side plate and the feeding vanes to the other. Both swing out, providing easy access for material changes. It comes in aluminum, stainless steel, or specialty steel for abrasion resistance and in sizes from 6 to 20 in.