Unique DV-ST UltraPure
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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 many configurations to meet your processes’ exact needs.
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High-quality valve bodies, proven diaphragms, reliable actuators
- Compact, lightweight, hygienic design – high-grade valve bodies and low Ra surface finishes
- Reduced risk of contamination – fully documented, made for aseptic operations with a standard low-ferrite valve body (optional high alloy valve body)
- Reliable, long-life diaphragm – available in high-performance EPDM for continuous steam operation at temperatures up to 150°C
- Flexible, fits-all stainless steel actuators available in slim and high-pressure versions, backed by a five-year warranty
- Easy installation, validation and qualification backed by Alfa Laval Q-doc comprehensive documentation package and service partner network
The Unique DV-ST UltraPure diaphragm valve is available for pneumatic or manual operation. For pneumatic operation, the valves are controlled by actuators that operate at product pressures of up to 10 bar, depending on the valve size, diaphragm material (EPDM, PTFE/EPDM and TFM/PTFE) and actuator selected. There is also a range of easy-to-mount indication and control units from which to choose.
For manual operation, the diaphragm valves are controlled by turning a handle attached to the stem. The handle features standard over-closure protection to help prolong diaphragm life. All steel parts are made of stainless steel or composite material, depending on the handle type.
How does the Unique DV-ST UltraPure work
The standard Unique DV-ST UltraPure consists of a valve body, diaphragm, handle or actuator. In the manual version, a simple turn of the handle pushes the compressor down on the diaphragm, pressing it against the weir of the valve body and closing the valve. You can also use a pneumatic actuator to control the valve. The diaphragm actuator controls the piston’s axial movement, opening or closing the valve, depending on the actuator’s function. The standard all-stainless-steel actuators are available in two versions: the Unique DV-ST UltraPure Slim (SL) for standard duties and the Unique DV-ST UltraPure High Pressure (HP) for more demanding pressures. Both are available as normally closed (NC), normally open (NO), or air/air activated (A/A) valves, as well as in ATEX versions for use in potentially explosive atmospheres.