Screw doser consisting of a spiral mounted on a shaft positioned inside a cradle which, thanks to its rotation, allows the treated product to move forward. Cryogenic dosers are equipped with an insulating chamber around the cradle filled with expanded polyurethane, which guarantees thermal insulation at very low temperatures. This type of doser is designed and built according to the Customer's requirements, both in size and materials. Construction in special materials (AISI 316, Hastelloy) is also available and, on request, construction for Atex classified areas.
