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Alfa Laval Diaphragm Valves: Unique DV-ST UltraPure

The standard Unique DV-ST UltraPure is designed either for manual operation or for Pneumatic operation. The valve consist of a valve body, diaphragm, handle or actuator.

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Unique DV-ST UltraPure

Alfa Laval Unique DV-ST UltraPure diaphragm valves are the natural choice for pharma and biotech industries (as well as other hygiene-focused processes). The compact and lightweight valves comprise a series of base parts including valve bodies, diaphragms, actuators and handles. The choice gives you a multitude of configurations to meet the exact needs of your process. All diaphragms used meet FDA/USP classifications as well as TSE/ADI.

Unique DV-ST UltraPure valve technology
Valve bodies have low delta-ferrite content and defined sulphur content as standard in all forged and block valves. Two-way valves, including the ferrules for clamp-end bodies, are made from a single piece of metal. T- and tank-outlet valves are available machined from block in a multitude of configurations and materials.

The aseptic diaphragm valves are built around a weir-type design and is available with hard or soft compounds from PTFE with EPDM as backing to a pure EPDM diaphragm. They can be operated manually or with pneumatic actuators that come with a range of sensing and control equipment, including control units, position indicators, stroke limiters and valve positioners.

Service and reliability
The valves come with Alfa Laval Q-doc, a comprehensive documentation package that provides full transparency of the entire supply chain. This helps smooth purchasing and installation procedures and facilitates qualification, validation and change control procedures. Based on GDP, Q-doc covers every aspect of biotech and pharmaceutical equipment supply and provides customers with transparent and well-documented quality assurance of the sourced equipment.

Manual operation A simple turn of the handle will push the compressor downwards on the diaphragm, pressing the diaphragm against the weir of the valve body thereby closing the valve Automatic operation The actuator controls the axial movement of a piston, thereby opening or closing the valve depending on the actuator function. 

The valve bodies are available in a wide variety of valve types and configuration options (dimension standards, connections, surface finish and material).

• 2-way

• T

• Tank outlet

• Tandem • Multi-port

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At Liquidyne, we prioritize our commitment to quality and consistency. In 2017 we achieved ISO 9001:2015 Quality Management System certification to ensure we can repeatedly deliver consistently high-quality products and solutions. Being an ISO 9001 facility, together with our USP Class VI Testing, ASME Bioprocessing Equipment (BPE), and EHEDG certification guarantee, we have the methodologies to assure quality. We will quickly and accurately rectify any issues if any of our products are ever in non-conformance.

img ‰ files/ISO_9001_Quality_Management_System_Certified.png ¶ url ‰ iso-certificate ¶ cta ‰ View Certificate ¶ txt ‰ At Liquidyne, we prioritize our commitment to quality and consistency. In 2017 we achieved ISO 9001:2015 Quality Management System certification to ensure we can repeatedly deliver consistently high-quality products and solutions. Being an ISO 9001 facility, together with our USP Class VI Testing, ASME Bioprocessing Equipment (BPE), and EHEDG certification guarantee, we have the methodologies to assure quality. We will quickly and accurately rectify any issues if any of our products are ever in non-conformance. ¶
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