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    DVS Screw-Type Dry Vacuum Pumps
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    Product introduction:
    DVB™ Roots pumps offer pumping speeds ranging from 350 to 9000 m3/h.
    Roots pumps are excellent devices for moving very large quantities of gas, so they are used to greatly extend pump performance. This allows for much faster pumping speeds and deeper vacuum levels.
    The gear box and bearing area in our Roots pumps are separated from the gas pumping chamber. Because the rotors operate contact-free, dry operation is assured. Operating at relatively low pressures, the roots pumps are not exposed to the same concentrations of corrosive process. They can be safely employed for low and medium vacuum applications in the in the manufacture of chemicals, petrochemicals, plastics, semiconductors and coating as well as food processing, vacuum furnace applications and many other general applications in industry.
    They are designed to be used in conjunction with rotary-piston, liquid ring, rotary pumps to increase pumping speed at working pressures and shorten pump down time significantly.
    We design and manufacture standard for you, as well as custom solutions for your specific application. Our specialists would be pleased to assist you in designing your vacuum system.
    With our reliable products, our decades of experience and our know-how, we stand ready to provide you with the optimum solution for your low and medium vacuum needs.

    Features and advantages:
    ● Mechanical shaft seal offers improved life and serviceability
    ● Exact helical timing gears are quieter, stronger ; mounted on drive end to reduce torque
    ● Five mechanical seals for option that can almost make sure no leakage for booster.
    ● Vertical gas flow configuration to reduce risk of loss of balance due to liquid entrapment.
    ● Rugged proven design and construction for durability and heat absorption, higher operating pressure
    ● Rotors and shafts are cast integrally and larger shaft diameters and reduces risk of impeller breakage
    ● Special impeller manufacture which is dynamically balanced to minimize vibration and noise
    ● Unique impeller design for high volumetric efficiency

    ◆ Metallurgy
    ◆ Chemistry and process
    ◆ Semiconductor processing
    ◆ Oil drying and de-gassing
    ◆ Pharmaceutical freeze drying
    ◆ Vacuum distillation
    ◆ Vacuum impregnation
    ◆ Packaging industry
    ◆ Thin-film technology
    ◆ Electron beam welding
    ◆ Simulation chambers
    ◆ Load-locks
    ◆ Steel degassing



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