DuraCirc®

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.

DuraCirc® circumferential piston pump

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.

.

Close at Hand catalogue

Close at hand brochure

 

The hygienic equipment product catalogue "Close at hand" includes product leaflets, links to animations, brochures and lists for ordering purposes.

Find an Alfa Laval product

CAD portal

CAD.jpg

 

 

The Alfa Laval CAD portal is an essential platform for downloading detailed product information, 2D drawings and 3D product models.

Visit the CAD portal

 

DuraCirc_Performance_medium.jpg

Engineered for durability, reliability and efficiency to extend the boundaries of your performance

 

Supreme Performance

Designed with close pump head clearances, the DuraCirc® circumferential piston pump(CPP) maximizes volumetric efficiency and process yield. Thirteen models offer a wide performance envelope with a flow rate capability up to 150 m3/hr (660 gpm) and operating pressures up to 40 bar (580 psi). This makes optimal pump sizing and selection easy, thereby reducing capital costs and increasing process flexibility.

 

Based on a robust, reliable design, DuraCirc® features include:

  • Advanced port and pump-head geometry, providing a very low NPSHr characteristic. This significantly reduces cavitation risk and maintains pump and media integrity whilst increasing process flexibility in challenging applications 
  • Long-life, heavy-duty bearings, supporting rigid shafts located in a solid stainless steel gearcase, which reduce shaft movement and allow close pump-head clearances. This minimizes pump-head contact and ensures process uptime
  • A modular seal design, which makes seal conversion easy without requiring re-machining or additional flush housings, should the process application change
  • An optional retrofit port, the DuraCirc® Uni-Fit, enabling easy, direct replacement of existing circumferential piston pumps from both Alfa Laval and other brands, without requiring pipework modification in existing process systems


DuraCirc_Hygeine_medium.jpg

Safely meets industry hygienic demands, assuring  the integrity of your processes and
the quality of your products

 

Superior hygiene

The all-stainless-steel DuraCirc® circumferential piston pump is certified to meet global standards for hygienic design, including EHEDG and 3-A. In contrast to many other circumferential piston pump brands, the DuraCirc® provides both excellent cleanability and high volumetric efficiency.

Features that reduce the risk of contamination include:

  • Profiled, product-wetted elastomers that are FDA-compliant and have a defined compression, thereby eliminating crevices and dead zones
  • A robust gearcase with optimally positioned heavy-duty bearings that support large diameter shafts, which minimize pump-head contact, thereby reducing the risk of media contamination
  • An all-stainless steel construction suitable for hygienic washdown, ensuring a cleaner environment
  • Long-lasting, FDA-compliant gearbox lubricant
  • Optimized seal design with faces fully immersed in the pumped media for higher cleaning efficiency

DuraCric_Service_medium.jpg

Innovative design features make maintenance faster and easier, increasing uptime in your operations

 

Simpler Service

Increase process uptime and make service faster and easier with innovative DuraCirc® design features. Perform standard maintenance procedures quickly and simply, without requiring gearbox disassembly, component re-work, or complex pump re-build procedures. Features include:

 

  • A truly front-loading, self-setting, single mechanical seal for fast, in-situ seal replacement, without having to remove the pump from the process line
  • Quick, easy replacement of rotors or rotor case in the unlikely event replacement is required
  • Easy-to-access, external shimming outside the rotorcase instead of inside the gearbox
  • Fully interchangeable spare parts
  • Long-life bearings, offering tens of thousands of hours of operation
  • A single, long-life, FDA-approved gearbox lubricant with an extended 3,000-hour change interval
.

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 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 circumferential piston pump.

DuraCirc circumferential piston pump exploded cut away
.

Enhance pump uptime and efficiency with condition monitoring

Discover how Alfa Laval’s advanced condition monitoring system can optimize your pump performance and give you peace of mind. Reduce the risk of unplanned downtime and save costs with real-time monitoring and proactive maintenance.

Analytics Monitor
.

360° Service and maintenance videos

How to change the single seal service kit
How to change the flushed seal service kit
How to change the double seal service kit
How to change the O-ring seal kit
How to change the flush O-ring seal kit
How to change the gearbox elastomer kit
How to disassemble and assemble the wet-end

You might also be interested in…

Food Logic

Alfa Laval's hygienic equipment combines high performance with gentle handling to preserve sensitive ingredients. Keeping up with the food industry trends and addressing four key challenges; supplying food products to consumers at a competitive price, getting the most from raw materials, reducing waste and emissions, and delivering safe and hygienic food products.

food logic 640x360
.

Subscribe near Newsletter

Stay updated on important sustainability issues and opportunities in your industry and processes!

Subscribe today

Animations

Visit the animations site and take a look inside a product to see and understand how it works. 

View animations 

Thinking ahead, technical articles

2b672282-9ebf-4a83-8961-8a962fae322c.jpg

Thinking ahead - Technical articles and white papers on hygienic equipment

Find all articles