Unique Mixproof Process

Safeguard process fluids at valve matrices and pipelines using Alfa Laval Unique Mixproof Process valve. This economical version of our premium double seat mixproof valves with seat lift eliminates the risk of cross-contamination. High cleanability, the ability to withstand pressure peaks, and fit-for-purpose components make this valve a great addition to dairy, food and beverage applications. It is available in various sizes to meet your hygienic processing requirements.

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Effecient double seat valve for fundamental mixproof functionality in hygienic applications

  • Get the product safety you need by eliminating the risk of cross-contamination and product loss while ensuring efficient cleaning
  • Enhance the reliability and flexibility of your process setup with proven valve technology tailored to your specific production needs
  • Minimize the risk of unplanned downtime while spending as little time and resources as possible on routine maintenance
  • Minimize your environmental impact with significant reductions in the use of water and CIP media and no spillage or product loss
  • Predefined and available in various sizes that meet your fundamental hygienic processing requirements

The Alfa Laval Unique Mixproof Process is a fit-for-purpose double seat valve with a seat lift function. Based on the proven Unique Mixproof and Unique Single seat valves, it is certified to FDA, 3A and other recognized standards.

The Unique Mixproof Process protects your products, even at high pressures. Its modular design makes it easy to adapt to various applications, capacity requirements and changing needs.

Service is simplified thanks to a maintenance-free actuator and proven seal technology with defined compression that prolongs the time between maintenance intervals. What’s more, enhance sustainability credentials by combining the valve with an Alfa Laval ThinkTop valve control unit for up to 90% savings in water, cleaning media and wastewater costs.


Protect your product

Get the product safety you need by eliminating the risk of cross-contamination and product loss, while ensuring efficient cleaning.

Boost your process

Enhance the reliability and flexibility of your process setup, with proven valve technology that matches the specific needs of your production.

Simplify your service

Minimize the risk of unplanned downtime, while spending as little time and resources as possible on routine maintenance.

Improve your sustainability

Limit your environmental impact, with greatly reduced water- and CIP media consumption and eliminated product loss.


How it works

The Alfa Laval Unique Mixproof Process valve is a normally closed (NC) valve controlled from a remote location by means of compressed air. The valve has two independent plugs and seals to separate the liquids; the space between the seals forms a leakage chamber at atmospheric pressure under every operating condition. Leakage rarely occurs, but  should it occur, the product flows into the leakage chamber and drains through the outlet at the bottom of the chamber for easy detection.

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When the valve is open, the leakage chamber is closed. The product then flows from one line to the other. The well-known radial design of the valve ensures that virtually no product spillage occurs during valve operation.

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Designed to maximize uptime in production, keeping service at a minimum.

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Eliminate unnecessary product loss, thanks to spillage-free operation.

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By adding the intelligence of Alfa Laval ThinkTop, you save up to 90% in water and cleaning media.

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Secure Cleaning-in-Place and product safety with Unique Mixproof

The latest generation of Unique Mixproof valves are designed to provide product safety during hygienic processing. Along the way, they let you improve several other aspects of your operation.

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Close at Hand Catalogue

Alfa Laval's hygienic equipment product catalogue "Close at hand" includes product leaflets, performance curves, links to animations, brochures and lists for ordering purposes.

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Services for hygienic valves

To ensure continuous uptime for your hygienic processes, extend the lifetime of your hygienic valves. With Alfa Laval as your service partner, you have access to our global service network and experts when you need it and local support when it counts. Rely on our broad range of services to optimize your processes – whenever, wherever.

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CAD portal

Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.

 View CAD portal 

Technical articles