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China Screw Water Ring Vacuum Pump Unit | Suppliers & Factory for High-Performance Vacuum Solutions

The Screw Water Ring Vacuum Pump Unit is an advanced vacuum solution designed for optimal performance in industrial applications. This unit features a high-efficiency Screw pump as the main pump, complemented by either 2BV or 2BE water ring pumps serving as pre-stage pumps. The primary function of the water ring pump is to generate the necessary pre-vacuum required for the efficient operation of the Screw pump. As a leading supplier in China, we ensure that our vacuum units deliver enhanced performance, with the capability to significantly improve ultimate vacuum levels. By adding additional stages of Screw pumps, users can increase the vacuum degree by an entire order of magnitude, making our products ideal for various manufacturing processes. Trust our factory for innovative vacuum solutions tailored to your needs

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Product Characteristics

High vacuum

Ultimate vacuum degree 267Pa - 0.5Pa

Large pumping capacity

Pumping capacity 30L/S - 20000L/S

Energy saving

5.5KW - 180KW

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		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

ⓘ Explanation

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 "Absolute Vacuum" value represent in the JZJ2B pump unit specification table?

A The "Absolute Vacuum" value (in Pa) indicates the ultimate vacuum level that the pump unit can achieve under standard operating conditions. For example, units with a 267 Pa absolute vacuum are suitable for applications requiring a moderate vacuum, while those reaching 0.5 Pa are designed for high-vacuum precision processes.

Q How should I select the right JZJ2B unit model for my application?

A Selection should be based on your actual vacuum extraction process requirements, including the required draw rate (L/S), target absolute vacuum level (Pa), and total power availability (KW). It is recommended to also consider the gas release process, non-volatile gas condensation, and intake pressure variations over time. Calculations or reference to existing equipment usage can assist in making the optimal choice.

Q What is the difference between the "Main pump" and "Pre-stage pump" in the unit configuration?

A The main pump (e.g., ZJP series or ZJ series roots blower) is responsible for achieving the target high-vacuum level, while the pre-stage pump (e.g., 2BV or 2BE series water ring pump) serves as a backing pump that reduces the pressure to a level at which the main pump can efficiently operate. Together they form a staged vacuum system for higher performance.

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

A Operating the main pump above its maximum intake pressure for a prolonged period will cause the pump motor to overload, potentially leading to overheating, increased wear, and equipment failure. It is critical to ensure that the pre-stage pump lowers the system pressure to within the main pump's rated range before and during operation.

Q When should I specify explosion-proof components for the JZJ2B vacuum pump unit?

A Explosion-proof components should be specified when the pump unit will be used in environments with flammable gases, vapors, or dust — such as chemical plants, petroleum processing facilities, or solvent handling operations. In such cases, the vacuum pump motor, electrical contact vacuum gauge or pressure transmitter, and electrical control cabinet must all meet explosion-proof standards. Note that the 2BV5 water ring vacuum pump should be replaced with the 2BV6 series accordingly.

Q Where can I find detailed technical specifications for individual pumps listed in the unit table?

A Detailed technical indicators for each individual pump — including the ZJP, ZJ, 2BV, and 2BE series — are available in the respective pump parameter tables provided separately. These tables include specifications such as motor power, maximum pumping speed, flange dimensions, and operational pressure ranges for each pump model.

China Screw Water Ring Vacuum Pump Unit | Suppliers & Factory for High-Performance Vacuum Solutions

Product Characteristics

High vacuum

Large pumping capacity

Energy saving

Self-manufactured and produced

Product Parameters

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