Three phase suction units with power from 9KW to 13Kw suitable for transferring powdery and granulated products with flow rates till 3000 kg/h. The relief valves is standard assembled on these units. Upon request, versions in stainless steel Aisi 304 are available. B: base version with uncovered motor (visual motor) BF: base model with uncovered motor and with safety filter BIF: base model with uncovered motor, safety filter and electrical switchboard C: model with protected motor CF: version with protected motor and safety filter CIF: version with protected motor, safety filter and electric switchboard CK: version with protected motor and safety filter chamber CIK: version with protected motor, safety filter chamber and electrical switchboard C..K : model with motor in version with HIGH FLOW