Rotary lobe blowers used to increase the flow rate of primary vacuum pumps when they are operating close to their minimum suction pressure. They are normally used in series with a primary vacuum system to achieve high levels of vacuum. It can be supplied with or without internal by-pass valve. TECHNICAL FEATURES: suction flow rate from 200 to 16,000 m3/h; without lubricants in contact with the aspirated fluid; without sliding of parts or wear; reduced maintenance costs, reliability, silence; high efficiency; possibility of sucking gases and vapours; executions in special materials (Stainless Steel, Hastelloy, Bronze, Aluminum etc.); internal linings for special applications; mechanical or labyrinth seals; with or without by-pass incorporated in the pump casting; possibility of special execution with magnetic drive.

TECHNICAL FEATURES: suction flow rate from 200 to 16,000 m3/h; without lubricants in contact with the aspirated fluid; without sliding of parts or wear; reduced maintenance costs, reliability, silence; high efficiency; possibility of sucking gases and vapours; executions in special materials (Stainless Steel, Hastelloy, Bronze, Aluminum etc.); internal linings for special applications; mechanical or labyrinth seals; with or without by-pass incorporated in the pump casting; possibility of special execution with magnetic drive.