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DuraCirc

Product Description

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.

No more compromises: Best-in-class offering for supreme performance, superior hygiene and simpler service – all in the same pump

  • Optimized for high volumetric efficiency, ensuring cost-effective pump selection and high product quality
  • Hygienic design compliant with global standards, including EHEDG and 3-A
  • Reliable, long-term operation thanks to durable, robust, heavy-duty, all-stainless steel construction
  • Easy to service and maintain with fully interchangeable spare parts
  • High process flexibility and reduced capital costs due to the broad range of model sizes, flow rates and pressures

Pump performance, hygienic design and ease of service are essential to hygienic processes. Yet manufacturers in the dairy, food, beverage, confectionery, and home-personal care industries often must sacrifice one essential to achieve another. Not anymore. The Alfa Laval DuraCirc® circumferential piston pump (CPP) delivers it all – high volumetric efficiency, EHEDG and 3-A conformance, and quick and easy service.

For a cost-effective pump selection offering a broad application scope, the range consists of 13 models, capable of flow rates up to 150 m3/hr (660 gpm) and pressures of 40 bar (580 psi).

Simplify service in terms of complexity and time with user-friendly features including a truly front-loading, self-setting single mechanical seal, use of a single long-life oil lubricant, and external shimming.

How it works

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 typicially 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 pump.

DuraCirc Pump Exploded Cut away 640x360
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