Sulzer - Volute Style Barrel Pump

The volute style barrel pump is a radially split, multistage pump designed for high-pressure oil production and high-temperature refinery applications. Its construction includes opposed impellers to balance axial thrust and a dual volute inner case for extended service life. The axially split inner case ensures rotor balance during installation, while various barrel closure methods, such as twistlock and bolted designs, facilitate maintenance. This pump is widely used in oil refineries, water injection, hydrotreater charge, and ethylene shipping, offering reliable performance in demanding environments. Key features include a double suction first-stage impeller for low NPSHa conditions and cartridge design options for rapid repairs.