AlphaFlo®

Description of Pump Expeller

• Horizontal centrifugal slurry pumps mainly have 3 shaft seal options.
• A-Gland Seal B-Mechanical Seal C-Centrifugal Seal
• Slurry pump centrifugal seal consists of an ‘expeller’which is positioned behind the impeller and is separated from the main pumping cavity by ‘expeller ring’. As the pump is running above a minimum speed, the expeller hydraulically seals the shaft by rotating with the impeller, generating a differential pressure gradient that forces the slurry away from the shaft seal and back towards the main volute cavity.
• Hi-Seal (HS1),the update of expeller seal and It features an increased diameter, which results in a larger differential pressure being created when in operation. This higher differential pressure results in a better sealing experience and allows even larger pump sizes to seal effectively.