Unique Mixproof

Las válvulas de doble asiento mixproof de Alfa Laval permiten el flujo simultáneo de dos productos o fluidos diferentes a través de la misma válvula sin riesgo de contaminación cruzada.

Unique Mixproof Valve

Cost effective mixproof valve

Alfa Laval Unique mixproof valves feature two independent plugs, which means that a single Unique mixproof valve can often replace two or more valves of other types.

Exceptional spillage-free operation 

A state-of-the-art double-seat design provides long-lasting, spillage-free operation thus minimizing the risk of product contamination. The use of double lip seals provides added protection to ensure safe and hygienic operation.

Easy valve to maintain and clean

Unique mixproof valves feature a top-loaded design, making maintenance fast and easy. It also features no adjustable components, a maintenance-friendly actuator and built-in leakage detection on all seals. Unique mixproof valves meet most hygienic standards and can be supplied with the optional SpiralClean cleaning system.

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You get the full benefit of using Unique mixproof valves by combining them with Alfa Laval ThinkTop and ThinkTop Basic valve sensing and control units.

Valve clusters - customized flow solutions 

We are specialists in providing pre-built valve clusters customized to meet specific, individual requirements.
Our expertise helps ensure you the most efficient flow management, using as few components as possible and dealing effectively with key issues that include thermal cycling, cleanability, drainability and flow control.
Alfa Laval valve clusters can be supplied pre-assembled and pre-tested as well as fully wired and with all the necessary pneumatic tubing, junction boxes and control panels pre-connected.
This means you can bring even complex installations online as quickly as possible, saving time and avoiding lost revenue associated with on-site troubleshooting and downtime. 

For more information, please refer to Documentation and to the Selection Guide.

For cost-effective alternatives to the Unique mixproof valve range, Alfa Laval also offers standard SMP mixproof valves. 


Product Benefits

  • Cost effective
  • Minimizing the risk of product contamination
  • Making maintenance fast and easy


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Unique mixproof valve range

The Alfa Laval Unique mixproof valve concept provides modular solutions that you can easily tailor to your specific requirements. This means you only pay for the exact features and capabilities you really need. To make selection easier, a series of Unique Mixproof valve versions is available.


Unique Mixproof UltraPure

Unique Mixproof UltraPure valve Unique Mixproof UltraPure valve is devolved and designed meet the stringent demands of the biotech- and pharmaceutical industries. This valve solution ensures a higher degree of plant flexibility resulting in optimized plant efficiency without compromising product safety. Customers have several options to fit individual needs; e.g. higher alloys to improve corrosion resistance. Like all our UltraPure equipment, Unique Mixproof UltraPure comes with the Alfa Laval Q-doc documentation package.


 Unique Mixproof Basic

Unique Mixproof Basic valve Unique Basic has the basic components that provide significant safety and leakage detection. It features an actuator without seat lift and unbalanced plugs.


Unique Mixproof SeatClean

Unique Mixproof SeatClean valve Unique SeatClean is the choice for standard installations that handle products with solids. Seat lift during normal cleaning procedures cleans the plugs and seats. A balanced lower plug eliminates the risk of mixing products by pressure shock or when the pressure in the pipe is high.

Unique Mixproof HighClean

Unique Mixproof HighClean valve Unique HighClean meets your processing needs when dealing with sticky products. SpiralClean ensures thorough cleaning of the spindles, upper and lower plugs and in the leakage chamber. With balanced upper and lower plug, the configuration of this valve protects against the effects of high pressure and water hammer.

Unique Mixproof UltraClean

Unique Mixproof Ultraclean valve Unique UltraClean meets the highest demands for hygienic processing of sticky products, products with high content of solids, or applications that require close-to-aseptic conditions. It features an actuator with integrated seat lift, balanced upper and lower plugs and SpiralClean.

Cómo funciona


El concepto de la válvula Unique Mixproof se basa en una serie de componentes básicos, que incluyen el cuerpo de la válvula, el tapón de la válvula y el actuador, así como opciones de limpieza y accesorios compatibles con una amplia gama de aplicaciones. Con el uso de estos componentes, es posible construir una válvula Unique Mixproof que coincida con sus requisitos exactos de proceso.

Para facilitar el mantenimiento, la válvula Unique Mixproof también cuenta con orificios de detección de fugas que proporcionan notificación anticipada de desgaste o daños en las juntas tóricas estáticas. Los operadores pueden inspeccionar la válvula visualmente en cualquier momento sin tener que desmontarla.

Principio de funcionamiento

La válvula Unique Mixproof de Alfa Laval es una válvula normalmente cerrada (NC) que se controla desde una ubicación remota mediante aire comprimido.

Para separar los dos líquidos, la válvula cuenta con dos tapones y sellos independientes. El espacio entre los dos sellos forma una cámara de fugas atmosférica. En el raro caso de que se produzca una fuga accidental de producto, este fluye a la cámara de fugas y se descarga por la salida de fugas.

Cuando la válvula está abierta, la cámara de fugas está cerrada. Luego el producto puede fluir de una línea a la otra sin vertidos. La válvula puede limpiarse y protegerse contra los golpes de ariete fácilmente según los específicos requisitos del proceso y la configuración de la válvula. (No se produce ningún vertido del producto durante el funcionamiento de la válvula).

State-of-the-art horizontal mixproof valve

Based on the well proven and exceptionally versatile principle of the Unique Mixproof valves, this horizontal mixproof tank valve features many of the same components, such as the actuator, yoke and seals, and therefore the same spare parts. This provides the benefits of easy serviceability and low total cost of ownership.

Alfa Laval Unique Mixproof Horizontal Tank Valve, can be fitted with any level of sensing and control. It is as standard supplied with seat lift, which enables handling of two different products at the same time, or safe handling of one product while seat-lift cleaning operations are being conducted in the other portion of the valve – all without any risk of cross-contamination. The double tangential design of the valve body ensures full drainability, especially when the valve is mounted at the bottom of a flat-bottomed tank.

Vídeos de servicio y mantenimiento de 360°

Válvulas antimezcla Unique Mixproof de Alfa Laval: sustitución del sello axial

Válvulas antimezcla Unique Mixproof de Alfa Laval: sustitución del sello radial

Válvulas Unique Mixproof de Alfa Laval: sustitución de los sellos bañados por producto