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2BV Series Water Ring Vacuum Pump
2BV Series Water Ring Vacuum Pump
2BE Series Water Ring Vacuum Pump
2BE Series Water Ring Vacuum Pump
2BW Water Ring Vacuum Pump Closed-Loop Unit
2BW Water Ring Vacuum Pump Closed-Loop Unit
FORYOU Air-Cooled Self-Circulating Water-Ring Vacuum Pump Unit
FORYOU Air-Cooled Self-Circulating Water-Ring Vacuum Pump Unit
High-Speed roots Vacuum Pump Operation
High-Speed roots Vacuum Pump Operation
FORYOU Air-Cooled roots Vacuum Pump
FORYOU Air-Cooled roots Vacuum Pump
Industrial Screw Vacuum Pump Unit
Industrial Screw Vacuum Pump Unit
Roots water ring vacuum unit
Roots water ring vacuum unit
Dry Screw Vacuum Pump 
Dry Screw Vacuum Pump 
Industrial Vacuum Pumping Solutions & Systems
Industrial Vacuum Pumping Solutions & Systems
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China Suppliers Factory Screw Water Ring Vacuum Pump Unit for Enhanced Pre-Vacuum and Boosting Performance

The Screw Water Ring Vacuum Pump Unit is a highly efficient vacuum solution developed for various industrial applications. Designed with a robust Screw pump as the primary component, this unit also includes 2BV or 2BE water ring pumps as essential pre-stage pumps. The water ring pump efficiently creates the necessary pre-vacuum, enabling the Screw pump to function optimally as a booster pump. With each additional stage of Screw pumps connected, the ultimate vacuum level of the unit can improve by an entire order of magnitude. As a leading manufacturer in China, our factory provides top-quality vacuum solutions that cater to the needs of diverse industries. Partner with us, your trusted suppliers, to enhance your operations with our advanced vacuum technology
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    Product Characteristics

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    Product Parameters

    Product Details

    Unit model

    Pump model

    Draw rate

    L/S

    Absolute vacuum

    Pa

    Total power

    KW

    Main pump

    Pre-stage pump

    JZJ2B30-1

    ZJP30

    2BV5110

    30

    267

    5.5

    JZJ2B70-1

    ZJP70

    2BV5111

    70

    7

    JZJ2B150-1

    ZJP150

    2BV5131

    150

    14

    JZJ2B300-2

    ZJP300

    2BV5161

    300

    19

    JZJ2B300-1

    ZJP300

    2BE1 202

    300

    26

    JZJ2B600-2

    ZJP600

    2BE1 203

    600

    44.5

    JZJ2B600-1

    ZJP600

    2BE1 252

    600

    52.5

    JZJ2B70-2.1

    ZJP70

    ZJP30/2BV5110

    70

    25

    7

    JZJ2B150-2.1

    ZJP150

    ZJP70/2BV5111

    150

    10

    JZJ2B300-2.1

    ZJP300

    ZJP150/2BV5131

    300

    18

    JZJ2B600-2.2

    ZJP600

    ZPJ300/2BV5161

    600

    26.5

    JZJ2B1200-2.2

    ZJ1200

    ZJP600/2BE1203

    1200

    55.5

    JZJ2B1200-2.1

    ZJ1200

    ZJP600/2BE1252

    1200

    63.5

    JZJ2B2500-2.1

    ZJ2500

    ZJ1200/2BE1303

    2500

    133

    JZJ2B5000-4.1

    ZJ5000

    ZJ1200/2BE1303

    5000

    176

    JZJ2B70-2.1.1

    ZJP70

    ZJP30/ZJP30/2BV5110

    70

    0.5

    8.5

    JZJ2B150-2.2.1

    ZJP150

    ZJP70/ZJP30/2BV5110

    150

    10

    JZJ2B300-2.2.1

    ZJP300

    ZJP150/ZJP70/2BV5111

    300

    14

    JZJ2B600-2.2.1

    ZJP600

    ZJP300/ZJP150/2BV5131

    600

    23.5

    JZJ2B1200-2.2.2

    ZJ1200

    ZJP600/ZJP300/2BV5161

    1200

    37.5

    JZJ2B1200-2.2.1

    ZJ1200

    ZJP600/ZJP300/2BE1202

    1200

    51.5

    JZJ2B2500-2.2.1

    ZJ2500

    ZJ1200/ZJP600/2BE1252

    2500

    85.5

    JZJ2B2500-4.2.1

    ZJ2500

    ZJP600/ZJP300/2BE1202

    2500

    55.5

    JZJ2B5000-4.2.1

    ZJ5000

    ZJ1200/ZJP600/2BE1252

    5000

    118.5
    📋 Important Notes
    1 The series in the table represents the recommended standards. Due to the varying working conditions in actual production applications, the gas intake and pressure will undergo many changes. Therefore, during the selection process, calculations or reference to the usage of existing equipment should be conducted based on the actual vacuum extraction process, gas release process, condensation of non-volatile gases, time variations of the intake pressure, etc.
    2 The technical indicators of the single pump are detailed in the respective pump parameter tables.
    3 The maximum intake pressure refers to the highest pressure that the main pump can start at. If it operates for a long time at a pressure higher than this, it will cause the main pump to overload.
    4 If the vacuum pump motor, electrical contact vacuum gauge/pressure transmitter, and electrical control cabinet need to be explosion-proof, please specify during the order. The 2BV5 water ring vacuum pump in the table should be correspondingly changed to the 2BV6 series.
    ❓ Frequently Asked Questions
    Q What does the unit model naming convention (e.g., JZJ2B300-2) mean for these vacuum pump units?
    The unit model designation such as JZJ2B300-2 indicates the type of vacuum unit (JZJ2B series), the pumping speed (300 L/S), and the configuration level (e.g., single-stage, two-stage, or multi-stage pre-pump combination). Higher configuration numbers generally indicate a more complex pre-stage pump arrangement capable of achieving a deeper ultimate vacuum.
    Q What is the difference between the absolute vacuum levels of 267 Pa, 25 Pa, and 0.5 Pa listed in the table?
    These values represent the ultimate absolute vacuum (residual pressure) achievable by each unit configuration. Units with 267 Pa use a single-stage pre-pump (water ring pump only), those with 25 Pa use a two-stage combination (one Roots pump + water ring pump), and units reaching 0.5 Pa use a three-stage configuration (two Roots pumps + water ring pump), enabling progressively deeper vacuum levels for more demanding industrial processes.
    Q How should I select the correct JZJ2B vacuum unit model for my application?
    Selection should be based on your actual process requirements, including the required vacuum level (absolute pressure in Pa), the necessary pumping speed (L/S), the nature of the gas being evacuated (dry, moist, or containing condensable vapors), and time-varying intake conditions. It is recommended to perform detailed calculations or consult with our engineers, referencing similar existing equipment in comparable applications.
    Q What happens if the vacuum pump operates above the maximum intake pressure for an extended period?
    Operating continuously above the maximum allowable intake pressure will cause the main Roots pump to overload. This can result in excessive motor current draw, overheating, premature wear of internal components, and potential motor burnout. It is critical to ensure the system reaches the appropriate pre-vacuum level before the main pump begins full operation, and to monitor operating conditions regularly.
    Q When is it necessary to specify explosion-proof requirements, and what changes are involved?
    Explosion-proof specifications are required when the vacuum system handles flammable, explosive, or hazardous gases, or when it is installed in classified hazardous areas. In such cases, the vacuum pump motor, electrical contact vacuum gauge or pressure transmitter, and electrical control cabinet must all meet explosion-proof standards. Additionally, the standard 2BV5 series water ring vacuum pump must be replaced with the equivalent 2BV6 series, which is designed and certified for use in explosive atmospheres. Please specify these requirements clearly at the time of ordering.
    Q Where can I find detailed technical parameters for the individual pumps (ZJP, ZJ, 2BV, 2BE series) used in these units?
    Detailed technical specifications for each individual pump model — including the ZJP and ZJ series Roots pumps as well as the 2BV and 2BE series water ring vacuum pumps — are available in their respective pump parameter tables. These documents cover performance curves, motor ratings, inlet/outlet dimensions, operating temperature ranges, and recommended maintenance intervals. Please refer to the corresponding product datasheets or contact our technical support team for the complete documentation.

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