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Dry Screw Vacuum Pump 
Industrial Vacuum Pumping Solutions & Systems
Industrial Vacuum Pumping Solutions & Systems
Screw Vacuum Pump Unit (2).jpg
Screw Vacuum Pump Unit (1).JPG

China Industrial Screw Vacuum Pump Unit - Suppliers & Factory for Enhanced Vacuum Solutions

The Screw Vacuum Pump Unit is a cutting-edge solution combining a Rotating Vane Pump and an LGB Oil-Free Vane Pump, specifically designed for high-performance vacuum applications. The LGB vane pump serves as the pre-stage pump, creating the essential pre-vacuum needed for the Rotating Vane Pump to operate efficiently as a booster pump. By integrating additional stages of the Rotating Vane Pump in series, the ultimate vacuum capacity can be significantly enhanced, achieving one order of magnitude increase with each stage. As a leading manufacturer and supplier in China, our factory is dedicated to delivering high-quality vacuum pump units that meet the diverse needs of our clients. Experience superior vacuum performance and reliability with our innovative Screw Vacuum Pump Unit
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    Product Characteristics

    01

    High pumping speed

    Pumping capacity 70L/S - 20000L/S

    02

    Energy saving

    Motor power 5.5KW - 180KW

    03

    Oil-free and water-free dry operation

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

    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

    Product Details

    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 in the JZJLG vacuum unit series?
    A
    The limiting pressure refers to the lowest achievable pressure the vacuum unit can reach under ideal conditions. Units with ≤1 Pa are suitable for standard high-vacuum applications, while units with ≤0.1 Pa are designed for more demanding processes requiring ultra-high vacuum levels, typically using a three-stage pump configuration including a middle pump.
    Q
    What is the difference between the two-stage and three-stage pump configurations in the JZJLG series?
    A
    Two-stage configurations (main pump + pre-stage pump) achieve a limiting pressure of ≤1 Pa, which is sufficient for most industrial vacuum applications. Three-stage configurations (main pump + middle pump + pre-stage pump) achieve ≤0.1 Pa, providing deeper vacuum levels for more precise or sensitive processes such as advanced material processing or research applications.
    Q
    How should I select the right JZJLG vacuum unit model for my application?
    A
    Selection should be based on your actual process requirements, including the required vacuum extraction rate (L/S), the target limiting pressure, gas release characteristics, condensation of non-condensable gases, and how intake pressure changes over time. It is recommended to perform detailed process calculations or consult with our engineers, referencing the operating conditions of existing equipment when available.
    Q
    What is the vacuum extraction rate range available in the JZJLG standard series?
    A
    The standard JZJLG series covers a vacuum extraction rate ranging from 70 L/S (model JZJLG70-1) up to 2500 L/S (model JZJLG2500-4.2), allowing customers to select a unit that matches the specific throughput demands of their production process.
    Q
    What is the total motor power range for the JZJLG vacuum unit series?
    A
    The total motor power ranges from 7 KW for the smallest model (JZJLG70-1) to 48 KW for the largest standard model (JZJLG2500-4.2). Choosing the correct model ensures energy efficiency while meeting your vacuum performance requirements.
    Q
    Are custom configurations available beyond the standard JZJLG series listed in the table?
    A
    Yes. The table represents the recommended standard series. Because actual production conditions vary — including differences in intake gas composition, pressure fluctuations, and process-specific requirements — custom configurations can be designed and calculated based on your specific working conditions to ensure optimal performance and reliability.

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