Unique Mixproof

Alfa Laval Unique Mixproof valves enable simultaneous flow of two products or fluids through the same valve without risk of cross-contamination thanks to their double seat valve design. Their exceptional spillage free operation is compliant with most hygienic standards.

Safe and efficient flow management

Long-lasting, spillage-free operation and minimal risk of product contamination thanks to state-of-the-art double-seat design.
Safe and hygienic operation with added protection of double lip seals
Easy and fast maintenance due to top-loaded design
Ease of operation – no adjustable components, a maintenance-friendly actuator and built-in leakage detection on all seals
Cost effective – a single Unique Mixproof valve can often replace two or more other types of valves

The modular concept of these shut-off valves enables you to tailor them to your specific requirements and only pay for features and capabilities you need. You get the full benefit of the Unique Mixproof valves by combining them with Alfa Laval ThinkTop v70 sensing and control units.

Construction

The unique mixproof valve concept is based on a series of base components, including valve body, valve plug, actuator and cleaning options and accessories that support a wide range of applications. Using these components, you can build a Unique mixproof valve to match your exact process requirements.

To facilitate maintenance, the Unique mixproof valve also features leakage detection holes that provide advance notification of wear or damage to static o-rings. Operators can visually inspect the valve at any time without having to disassemble it.

Operating principle

The Alfa Laval Unique mixproof valve is a normally closed (NC) valve that is controlled from a remote location by means of compressed air.

To separate the two liquids, the valve has two independent plug seals. The space between the two seals forms an atmospheric leakage chamber. In the rare case of accidental product leakage, the product flows into the leakage chamber and is discharged through the leakage outlet.

When the valve is open, the leakage chamber is closed. The product can then flow from one line to the other without spillage. The valve can easily be cleaned and protected against the effects of water hammer according to the specific requirements of the process and the configuration of the valve. (There is no product spillage during valve operation).

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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 High Alloy

Unique Mixproof High Alloy valve is developed and designed to suit tough applications within dairy, food, beverage, personal and home care applications. Products with high level of chloride, chemicals or low pH demand high grade alloy equipment to improve corrosion resistance.

Unique Mixproof UltraPure

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 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 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 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 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.