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China Screw Water Ring Vacuum Pump Unit - Reliable Suppliers & Factory for Enhanced Vacuum Solutions

Introducing our advanced Screw Water Ring Vacuum Pump Unit, a highly efficient vacuum solution designed for various industrial applications. This unit combines a state-of-the-art Screw pump as the main pump with reliable 2BV or 2BE water ring pumps serving as pre-stage pumps. The water ring pump's primary function is to establish the necessary pre-vacuum for optimal performance of the Screw pump. Acting as a booster pump, the Screw pump enhances the overall vacuum level, allowing for an impressive increase in the ultimate vacuum degree with each additional Screw pump stage connected, As a leading China supplier and factory of innovative vacuum solutions, we are committed to providing high-quality products that meet stringent industry standards. Choose our Screw Water Ring Vacuum Pump Unit for unmatched reliability and performance in vacuum applications

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Product Characteristics

High vacuum

Ultimate vacuum degree 267Pa - 0.5Pa

Energy saving

5.5KW - 180KW

Wide application range

Suitable for chemical, pharmaceutical, oil, new energy, distillation, rectification, PET sheet extrusion and other processes

Self-manufactured and produced

Self-manufactured and produced, with over 40 vacuum-related patent technologies, rated as a national-level high-tech enterprise and a science and technology enterprise, has passed ISO9001 quality management system certification

Product Parameters

Product Details

Unit model	Pump model		Draw rate L/S	Absolute vacuum Pa	Total power KW
Unit model	Main pump	Pre-stage pump	Draw rate L/S	Absolute vacuum Pa	Total power KW
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		25	52.5
JZJ2B70-2.1	ZJP70	ZJP30/2BV5110	70	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 & Explanations

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 (FAQ)

Q What does the unit model designation in the JZJ2B series indicate?

The unit model designation (e.g., JZJ2B300-2) encodes key specifications: the pump type (JZJ2B = Roots-water ring vacuum unit), the nominal pumping speed in L/S (e.g., 300), and the configuration stage code indicating the number and arrangement of pre-stage pumps. This naming convention helps users quickly identify the appropriate unit for their application.

Q How do I select the correct JZJ2B vacuum unit for my application?

Selection should be based on your actual process requirements, including the required pumping speed (L/S), the target absolute vacuum level (Pa), gas release characteristics, condensation of non-volatile gases, and time variations in intake pressure. It is recommended to perform engineering calculations or consult with existing equipment usage data rather than relying solely on the standard table values.

Q What is the difference between single-stage and multi-stage pre-pump configurations?

Single-stage configurations (e.g., JZJ2B300-1) use one pre-stage pump paired with the main Roots pump, suitable for moderate vacuum requirements (absolute vacuum ~267 Pa). Multi-stage configurations (e.g., JZJ2B300-2.2.1) use two or more pre-stage pumps in series, enabling the system to reach much deeper vacuum levels (down to 0.5 Pa absolute), at the cost of higher total power consumption.

Q What happens if the main pump operates above its maximum intake pressure for extended periods?

Operating the main pump continuously above its maximum allowable intake pressure will cause the pump motor to overload. This can lead to overheating, increased wear, premature failure of the pump or motor, and potential safety hazards. It is critical to ensure the system operates within the specified pressure range during normal production runs.

Q When should I specify explosion-proof components for the vacuum unit?

Explosion-proof components — including the pump motor, electrical contact vacuum gauge or pressure transmitter, and the electrical control cabinet — must be specified when the unit will be used in environments with flammable gases, vapors, or dust. In such cases, the standard 2BV5 water ring vacuum pump must be replaced with the equivalent 2BV6 explosion-proof series. Please indicate this requirement clearly at the time of ordering.

Q Where can I find detailed technical parameters for each individual pump in the unit?

Detailed technical specifications — such as individual pump curves, motor ratings, inlet/outlet flange sizes, and operating limits — for each pump model (e.g., ZJP series Roots pumps and 2BV/2BE series water ring pumps) are provided in their respective pump parameter tables. Please refer to the dedicated data sheets for each pump model for accurate engineering data.

China Screw Water Ring Vacuum Pump Unit - Reliable Suppliers & Factory for Enhanced Vacuum Solutions

Product Characteristics

High vacuum

Energy saving

Wide application range

Self-manufactured and produced

Product Parameters

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