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China Industrial Screw Vacuum Pump Unit - Oil-Free Solutions from Leading Suppliers and Factory

The Screw vacuum pump unit is designed with a main Rotating vane pump and an LGB oil-free vane pump as its pre-stage pump, making it an ideal choice for high-performance applications. The primary role of the vane pump is to create the essential pre-vacuum required for the Rotating vane pump to operate efficiently. As a leading booster pump, the Rotating vane pump enhances the vacuum unit's performance significantly. With every added stage of the Rotating vane pump in series, the ultimate vacuum capacity can increase by one order of magnitude. This advanced vacuum solution is manufactured by top-quality China suppliers and produced in our state-of-the-art factory, ensuring reliability and excellence for various industrial applications

    Product Characteristics

    01

    High vacuum

    Ultimate vacuum ≤ 1Pa

    02

    Oil-free and water-free dry operation

    Oil-free and water-free dry operation, environmentally friendly and emission reduction, 100% solvent recovery;

    03

    Independently manufactured

    Independently manufactured, with over 40 vacuum-related patents, rated as a national high-tech enterprise and a science and technology enterprise, has passed ISO9001 quality management system certification

    04

    Foryou vacuum pump customer cases

    Tsinghua University, WANGWANG Food, Hainan Coconut Tree, Coca-Cola, Fuyao Glass Industrial Group, Longliqi Industrial, Adolph Cosmetics, Changhong Chemicals, Chengdu Aircraft, China National Petroleum, Hengyi Caprolactam, Yufeng New Materials, Asia Pharmaceutical Group, Xintianyuan Pharmaceutical, Yuekang Pharmaceutical Group, Deliangfang Pharmaceutical, Yanjing Beer, Baiwei Beer, Chinese Academy of Sciences, Huayuan New Energy, Zunxin Innovation Energy, etc., 200+ specialized industries and 10000+ customers. The top players in multiple industries are using Foryou vacuum pumps.

    Product Parameters

    Unit Model Limiting Pressure (Pa) Vacuum Extraction Rate (L/S) Main Pump Middle Pump Pre-stage Pump Total Motor Power (KW)
    JZJLG70-1 ≤1 Pa 70 ZJP70 — LGB50 7
    JZJLG150-2 150 ZJP150 — LGB80 10.5
    JZJLG150-1 150 ZJP150 — LGB120 14
    JZJLG300-1 300 ZJP300 — LGB200 22.5
    JZJLG300-2A 300 ZJP300 — LGB150 19
    JZJLG300-2B 300 ZJP300 — LGB120 15
    JZJLG600-2 600 ZJP600 — LGB200 26
    JZJLG150-2.1 ≤0.1 Pa 150 ZJP150 ZJP70 LGB50 10
    JZJLG300-2.1 300 ZJP300 ZJP150 LGB120 18
    JZJLG600-2.2 600 ZJP600 ZJP300 LGB150 26.5
    JZJLG1200-2.2 1200 ZJ1200 ZJP600 LGB200 37
    JZJLG2500-4.2 2500 ZJ2500 ZJP600 LGB200 48
    Explanation

    The table represents the recommended standard series. Due to the varying working conditions in actual production applications, the intake gas and pressure will undergo many changes. Therefore, during the selection process, calculations should be conducted based on the actual vacuuming process, gas release process, condensation of non-condensable gases, changes in intake pressure over time, etc., or the selection should be made by referring to the usage conditions of existing equipment.

    Frequently Asked Questions
    Q
    What does the limiting pressure (≤1 Pa or ≤0.1 Pa) mean for these vacuum units?
    The limiting pressure refers to the lowest pressure level that a vacuum unit can achieve under ideal operating conditions. Models rated at ≤1 Pa are suitable for standard high-vacuum applications, while models rated at ≤0.1 Pa are designed for ultra-high vacuum processes requiring more precise and deeper vacuum levels, typically incorporating an additional middle pump stage.
    Q
    How do I select the right JZJLG vacuum unit model for my application?
    Selection should be based on your actual process requirements, including the required vacuum extraction rate (L/S), the target working pressure, the nature and volume of intake gases, gas release rates, and whether non-condensable gases are present. It is recommended to perform detailed process calculations or consult with an engineer, referencing the working conditions of existing similar equipment.
    Q
    What is the role of the main pump, middle pump, and pre-stage pump in the vacuum unit system?
    In a multi-stage vacuum system, the main pump (e.g., ZJP or ZJ series) handles the primary high-vacuum pumping. The middle pump acts as an intermediate booster to extend the vacuum range. The pre-stage pump (e.g., LGB series) serves as the backing pump, maintaining the outlet pressure required for the upstream pumps to operate efficiently. Together, they achieve a deeper and more stable vacuum.
    Q
    Why do some models with the same vacuum extraction rate have different total motor power ratings?
    Models with the same extraction rate (e.g., 300 L/S) may use different pre-stage pump configurations (e.g., LGB200, LGB150, or LGB120), which have different motor power ratings. The choice of pre-stage pump depends on the specific process gas load and operating conditions, resulting in varying total motor power consumption across configurations.
    Q
    Are the specifications in the table fixed, or can configurations be customized?
    The table represents a recommended standard series based on common industrial applications. Since actual working conditions — such as gas composition, pressure variation over time, and process-specific requirements — can vary significantly, custom configurations are available. Users are encouraged to consult with the manufacturer to tailor the vacuum unit to their specific process needs.
    Q
    What industries or applications are JZJLG vacuum units typically used for?
    JZJLG vacuum units are widely used in industries that require high or ultra-high vacuum environments, such as metallurgy, chemical processing, pharmaceutical manufacturing, electronics, coating and thin-film deposition, vacuum heat treatment, and scientific research. Their multi-stage pump design makes them suitable for applications with large gas loads and demanding vacuum requirements.

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