Circumferential piston pumps
Alfa Laval circumferential piston pumps provide the perfect combination of high efficiency, superior hygienic performance, and easy maintenance. Perfectly suited for hygienic applications, these pumps serve the dairy, food, beverage, confectionery, and home-personal care industries, delivering reliable operation and consistently high-quality results.
Alfa Laval Circumferential Piston Pump Product Leaflets
How does a circumferential piston pump work?
A pair of winged rotors or pistons rotate in the pump casing around the circumference of the channel. This continuously generates a partial vacuum at the suction port as the rotors unmesh, causing fluid to enter the pump. The movement of the rotors transports the fluid around the channel. The re-meshing of the rotors generates pressure, displacing the fluid at the discharge port. The direction of flow is reversible.
Alfa Laval DuraCirc® Circumferential Piston Pump
The revolutionary Alfa Laval DuraCirc® is the first circumferential piston pump that delivers the perfect balance of durability, reliability, high efficiency and superior hygienic performance. Combined with a broad range of flow rates and pressures along with capabilities for simple service, DuraCirc keeps your processes up and running.
How does the DuraCirc® circumferential piston pump work
The DuraCirc® construction features two rotors, housed within a pumping chamber, known as a rotorcase, with each rotor located on a shaft held rigidly within a gearcase. The two rotors are timed via timing gears in the gearcase, which along with shimming, ensures no rotor or rotor case contact. Rotor/shaft drive is typically provided via geared electric motor.
Due to the close internal running clearance within the pumping chamber, the rotation of the rotors continuously generates a partial vacuum in the suction port of the pump as the rotors unmesh. This results in a localized pressure drop, which allows fluid to enter the pump. The fluid is then transported around the channel by the rotor wings; the pressure generated as the rotor wings re-mesh forces the fluid out of the discharge port of the circumferential piston pump.
Alfa Laval DuraCirc® Aseptic Circumferential Piston Pump
The Alfa Laval DuraCirc® Aseptic is a revolutionary circumferential piston pump for aseptic applications. It delivers the perfect balance of durability, reliability, high efficiency and superior hygienic performance. Combined with a broad range of flow rates and pressures along with capabilities for simple service, DuraCirc® Aseptic keeps your processes up and running.