DuraCirc

A Alfa Laval DuraCirc® revolucionária é a primeira bomba de pistão circunferencial que oferece o equilíbrio perfeito entre durabilidade, confiabilidade, alta eficiência e sanitariedade máxima. Combinada com uma grande variedade de vazões e pressões com características de manutenção simples, a DuraCirc mantém os processos ativos e em funcionamento.

Chega de compromissos: a melhor opção da categoria com performance absoluta, sanitariedade máxima e serviços mais simples – tudo na mesma bomba

  • Otimizada para alta eficiência volumétrica, garantindo uma seleção de bomba econômica e alta qualidade do produto
  • Projeto higiênico compatível com padrões globais, inclusive EHEDG e 3-A
  • Operação confiável e de longo prazo graças à construção durável, robusta, resistente e totalmente em aço inoxidável
  • Fácil de consertar e manter com peças e sobressalentes totalmente intercambiáveis
  • Alta flexibilidade no processo e custos de capital reduzidos por causa da grande variedade dos tamanhos de modelos, das vazões e das pressões

A performance da bomba, o desenho higiênico e a facilidade de manutenção são essenciais para os processos higiênicos. Ainda assim, os fabricantes dos setores de laticínios, alimentos, bebidas, confeitaria e higiene e limpeza muitas vezes devem sacrificar um elemento essencial para conseguir outro. Não mais. A CPP (Circumferential Piston Pump, Bomba de pistão circunferencial) Alfa Laval DuraCirc® oferece tudo – alta eficiência volumétrica, conformidade com EHEDG e 3-A, além de serviços rápidos e fáceis.

Tendo em vista uma seleção de bomba econômica e com amplo escopo de aplicação, a linha consiste em 13 modelos, com capacidade para vazões de até 150 m3/h (660 gpm) e pressões de 40 bar (580 psi).

Simplifique os serviços em termos de complexidade e tempo com características amigáveis ao usuário, inclusive um selo mecânico único verdadeiramente de carregamento frontal e autoajustável, além do uso de um único óleo lubrificante de vida útil prolongada e calços externos.

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

 

Supreme Performance

Designed with close pump head clearances, the DuraCirc® CPP pump 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


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

 

Superior Hygiene

The all-stainless-steel DuraCirc® 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

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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 maintence 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

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DuraCirc® product brochure

Discover how the DuraCirc® offers Supreme Performance, Superior Hygiene and Simpler Service.

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Easy condition monitoring for hygienic pumps

The Alfa Laval CM monitors the operating condition of rotating equipment, such as pumps

Como funciona

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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.

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