Three phase vacuuming units with powers till 2.2Kw, suitable for the transferring of powdered and granulated products with flow rates till 700 kg/h. In these models there is NO breathing valve; the connection to the vacuum hose is of Ø50mm. B: basic model with uncovered motor (visual motor) BF: basic model with uncovered motor and safety filter BIF: basic model with uncovered motor, safety filter and electric box C: model with motor housing CF: model with motor housing and safety filter CIF: model with motor housing, safety filter and control box CK: model with motor housing and safety filtering chamber CIK: model with motor housing, safety filtering chamber and control box