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

The Screw water ring vacuum pump unit is a highly efficient vacuum system designed for optimal performance. This unit features a robust Screw pump as its main component, paired with 2BV or 2BE water ring pumps serving as pre-stage pumps. The water ring pump plays a crucial role in generating the essential pre-vacuum needed for the Screw pump to operate effectively. By utilizing this configuration, the Screw pump acts as a powerful booster, enhancing overall vacuum levels. Notably, for every additional stage of Screw pumps integrated into the unit, the ultimate vacuum degree significantly improves, achieving up to one order of magnitude increase. As a leading factory in China, we supply high-quality vacuum pump units to meet the diverse needs of various industries.

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Product Characteristics

Large pumping capacity

Pumping capacity 30L/S - 20000L/S

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

Foryou vacuum pump customer cases

Tsinghua University, Wanguang 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, Zunxinnew Energy, etc., 200+ specialized industries and 10000+ customers. The top players in multiple industries are all using Foryou vacuum pumps.

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 unit model code in the JZJ2B series indicate?

The JZJ2B series unit model codes indicate the configuration and capacity of the vacuum pump unit. For example, the number following "JZJ2B" represents the draw rate in L/S, and the suffix indicates the pump combination stage — single pre-stage (e.g., -1), two-stage (e.g., -2.1), or three-stage (e.g., -2.2.1).

Q What is the difference between the absolute vacuum levels (267 Pa, 25 Pa, and 0.5 Pa)?

The three absolute vacuum levels — 267 Pa, 25 Pa, and 0.5 Pa — correspond to increasing stages of vacuum depth achieved by adding more pre-stage pumps. Units with a single pre-stage pump reach 267 Pa, two-stage combinations reach 25 Pa, and three-stage configurations achieve the deepest vacuum of 0.5 Pa. Selecting the appropriate level depends on your specific process requirements.

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

Selection should be based on your actual vacuum extraction process, including gas intake volume, required vacuum level, gas release rate, non-volatile gas condensation, and how intake pressure varies over time. The table provides recommended standard configurations, but calculations based on your specific working conditions are strongly advised before finalizing a model.

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

Operating the main pump continuously at a pressure higher than its maximum rated intake pressure will cause the motor to overload. This can lead to overheating, premature wear, and potential damage to the pump. Always ensure the operating pressure stays within the specified limits, and use appropriate pre-stage pumps to reduce inlet pressure when needed.

Q When should I specify the 2BV6 series instead of the 2BV5 water ring vacuum pump?

You should specify the 2BV6 series when your application requires explosion-proof equipment — for example, in environments where flammable or hazardous gases may be present. The 2BV6 series is the explosion-proof counterpart of the 2BV5. Please note this requirement clearly when placing your order so the appropriate components can be supplied.

Q Where can I find detailed technical parameters for individual pumps (ZJP, ZJ, 2BV series)?

Detailed technical specifications — including flow rates, motor ratings, dimensions, and performance curves — for individual pump models such as ZJP, ZJ, 2BV5, 2BV6, and 2BE1 series are available in their respective pump parameter tables. Please refer to the dedicated datasheets or contact the manufacturer for complete pump-level specifications.

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

Product Characteristics

Large pumping capacity

Wide application range

Self-manufactured and produced

Foryou vacuum pump customer cases

Product Parameters

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