Double seal valves

Alfa Laval double seal valves are cost-effective mixproof valves that safely handle the simultaneous flow of two different products or fluids through the same valve without the risk of cross-contamination. These standardized top-loaded pneumatic valves are ideal for hygienic applications that require additional safety, leakage detection and Cleaning-in-Place (CIP) across the dairy, food, beverage, home-personal care and many other industries.

Alfa Laval SMP

Safe, reliable and economical mixproof valves for safe separation of two different products in piping systems of hygienic and aseptic processes

  • Safely isolates two process fluids or a process fluid and cleaning media without the risk of contamination
  • Increases both operational and product safety due to self-draining design
  • Produces higher quality products at lower costs using aseptic double seal valves to secure your process
  • More uptime secured through fully maintainable actuator for precision valve control
  • Low maintenance due to few, yet durable, moving parts and a top-loaded design that provides easy access for disassembly and service

Maximize product safety and process reliability while minimizing costs and contaminant risks with Alfa Laval double-seal valves. Handle both process and CIP fluids at the same time with ease. A great alternative to double-seat mixproof valves, these standardized, cost-effective double shutoff valves come in hygienic and aseptic models and are available in a variety of valve body configurations as shutoff valves.


How does a double seal valve work?

Alfa Laval double seal valves are controlled by means of compressed air from a remote location. The valve is fitted with two pneumatic normally open (NO) valves – a leakage detection valve and a CIP valve. The valve plug has two seals; the space between these seals forms a leakage chamber under atmospheric pressure. The leakage detection valve discharges any product leakage to the leakage chamber. The leakage chamber may be cleaned by supplying a CIP system into the leakage detection valve. The double seal valves are insensitive to water hammer in the product line above the plug.



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Close at hand catalogue about valves

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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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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Grow your business. Optimize your fluid handling systems – sustainably

Make your processes more efficient and more sustainable while achieving regulatory compliance and ensuring your business thrives. With Sustainable Optimization from Alfa Laval, you can save up to 80% in energy savings as well as 90% in water savings and cleaning media, while minimizing waste. Good for people. Good for planet. Good for profitability.

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Bring your sustainability strategy to life

Get more energy and water savings and reduce emissions from your hygienic processing lines. Our monthly newsletter, near, brings you stories about how Alfa Laval can support you in improving environmental performance across the dairy, food, beverage, home-personal care and pharmaceutical industries. What’s good for people and planet is good for your business too.