Unique Mixproof Tank Outlet

Trust the Unique Mixproof Tank Outlet to handle the simultaneous flow of product or fluid through the same valve without the risk of cross-contamination in the tank. Mounting the hygienic double seat valve vertically under the tank or horizontally directly on the tank wall at inlets and outlets ensures cost-effective, spillage-free operation. Full valve drainability guarantees easy maintenance and state-of-the-art cleanability while securing flexibility, productivity, and product quality.

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Cost-effective, spillage-free routing of fluids from hygienic piping systems into and out of processing tanks

  • Enhanced product safety due to minimized risk of contamination
  • Maximum yield due to spillage-free routing of fluids into and out of hygienic piping systems and tanks
  • Optimized process efficiency and enhanced cleanability of the critical connections between hygienic pipe systems and tanks
  • Advance alerts for wear parts replacement due to a fully drainable leakage detection chamber that can be cleaned in place
  • Easily adapts to meet specific process requirements

Fill or empty your hygienic processing tanks with the Alfa Laval Unique Mixproof Tank Outlet double seat valves. Two independent plugs and seals, with double lip seals, guarantee safe, hygienic, long-lasting, spillage-free operation and reduce the risk of product contamination.

Maintenance is quick and easy. Simply access what’s needed from one side of the Unique Mixproof Tank Outlet. There are no adjustable components, a maintenance-friendly actuator and built-in leakage detection on all seals.

Use the Unique Mixproof Tank Outlet double seat valve with the Alfa Laval ThinkTop sensing and control units to control fluid handling into and out of the processing tank and onward to the processing line.

How it works

The Alfa Laval Unique Mixproof Tank Outlet is a double seat valve controlled from a remote location by means of compressed air. The valve is a normally closed (NC) valve with two independent plug seals, forming a leakage chamber. In the leakage chamber, there is only atmospheric pressure during every possible working condition. In the rare case of accidental product leakage, fluid will flow into the leakage chamber and be discharged through the leakage outlet.


When the valve is open, the leakage chamber is closed. The product can then flow from the tank to the pipeline. The balanced plug is prevented from closing too The valve can be cleaned to any level (hygienic or high purity) according to the needs of the specific process. There is virtually no product spillage when operating the valve.

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Alfa Laval Unique mixproof valves - replace product-wetted seals

Alfa Laval Unique mixproof valves - replace radial seal

Alfa Laval Unique mixproof valves - replace axial seal

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At your fingertips: Alfa Laval hygienic valves to ensure the most efficient flow of fluids through your process lines. Our ‘Close at hand’ catalogue details everything you need to determine the optimal flow solution for your processes. What you get is no risk of cross-contamination, increased safety, more uptime and cost savings, and greater productivity.

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Save water with ThinkTop

Do something good for the environment and save up to 95% in CIP liquid when cleaning your valves. Innovations like ThinkTop sensing and control units make more efficient use of resources while safeguarding process hygiene. Add ThinkTop to your valves to optimize your processes.

ThinkTop 640x360


Optimize™ by Alfa Laval accelerates your sustainability efforts by enhancing your existing processes. Together we can optimize your processes to accomplish more with less, without straining your operation or budget. Enabling substantial cuts in water, energy, and chemicals consumption to help make your business part of a truly sustainable future.


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