Diaphragm valves

Alfa Laval diaphragm valves are aseptic inline valves to shut off, divert and/or regulate the fluid flow through hygienic, high-purity and aseptic processing lines. Manually or pneumatically operated, these compact, lightweight valves are easy to configure to suit virtually any process requirement, including sterile and ultra-hygienic processes for biotech and pharmaceutical applications.

DV ST Ultrapure diaphragm valve

Proven, high-performance diaphragm valves for demanding aseptic processes

  • Ensure high-quality, contaminant-free products due to hermetic design and aseptic diaphragm technology
  • Save time and money with compact, lightweight, easy-to-install valves from two-way to customized valve clusters
  • Increase performance with purpose-built valves with minimal deadlegs and maximum drainability and cleanability
  • Increase performance and reliability whilst reducing downtime due to optimized valves and the use of high-grade and long-lasting materials
  • Ease qualification and change control procedures with Alfa Laval Q-doc documentation package for full traceability of all product contact parts

Get contaminant-free performance across all the hygienic and high-purity industries, including the food, personal care, biotech and pharmaceutical industries with Alfa Laval diaphragm valves.

Design purpose-built two-way or multiport diaphragm valves to meet your exact requirements. Selection is simple, flexible and easy. All high-grade, ATEX-compliant components are compatible and engineered to safeguard product quality and process efficiency, reliability and economy.

Choose from hard and soft membranes, various valve bodies, pneumatic actuator or manual handle, diaphragm materials, connections and also various surface finishes and materials, including corrosion-resistant alloys. Then add the valve sensing and control units to suit your exact process requirements.


How does diaphragm valves work?

Alfa Laval diaphragm valves have two modes of operation: manual operation using a handle and automatic operation using a pneumatic actuator.

For manual operation, simply turn the handle to lift the compressor upwards. This moves the diaphragm away from the weir of the valve body, thereby opening the valve. Turning the handle in the opposite direction pushes the compressor downwards onto the diaphragm, pressing the diaphragm against the weir of the valve body and closing the valve.

For automatic operation, a pneumatic actuator controls the axial movement of a piston, thereby opening or closing the valve, depending on the actuator function.



Get the full overview                                                                                                                              


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.