Top 10 Liquid Ring Vacuum Pump Manufacturers in China (2026)

1. CHINCO Vacuum Technique

CHINCO Vacuum Technique (Zibo) Co., Ltd. is a major Chinese manufacturer specializing in liquid ring vacuum technology. Based in Zibo, Shandong, the company serves as an important R&D and manufacturing base for liquid ring vacuum products within Atlas Copco Group's Vacuum Technique business area while continuing to develop its own liquid ring product offering.

Its portfolio includes 2BE1 single-stage liquid ring vacuum pumps, 2BV liquid ring vacuum pumps, compressors, and engineered liquid ring solutions covering both general industrial and demanding process applications.

Large 2BE-type pumps are especially relevant to applications requiring substantial gas handling capacity and continuous operation. Liquid ring technology also makes these pumps suitable for processes involving moisture, condensable vapors, and process gases that may be difficult for some conventional vacuum technologies.

CHINCO is particularly suitable for buyers prioritizing established liquid ring technology, large industrial pumping capacities, manufacturing scale, and experience with process-industry vacuum applications.

Key advantages:

• Strong specialization in liquid ring vacuum technology
• 2BE1 and 2BV liquid ring vacuum pump ranges
• Large-capacity industrial vacuum solutions
• Suitable for wet and condensable process gases
• Support for demanding process-industry applications

2. DV VACUUM

DV VACUUM is a China-based industrial vacuum pump and vacuum system manufacturer founded in 2007. Its product portfolio includes Liquid Ring Vacuum Pumps, Roots Vacuum Pumps, Circulatory Gas Cooled Roots Vacuum Pumps, Dry Screw Vacuum Pumps, Oil Rotary Vane Vacuum Pumps, and customized vacuum systems.

For liquid ring applications, DV VACUUM manufactures the DVL Series Liquid Ring Vacuum Pump and provides complete Liquid Ring Vacuum Systems. These solutions are designed for industrial processes involving water vapor, condensable gases, wet gas streams, and other operating conditions where liquid ring technology can provide stable vacuum performance.

One of DV VACUUM's main advantages is its ability to go beyond standalone pump supply. Depending on process requirements, the company can engineer liquid ring vacuum packages, Roots-liquid ring vacuum systems, Roots-dry screw systems, and other customized vacuum configurations.

System selection can be based on parameters such as gas composition, pumping speed, operating pressure, corrosion resistance, temperature, cooling conditions, condensation characteristics, and explosion-proof requirements.

DV VACUUM uses in-house manufacturing, CNC machining, inspection, dynamic balancing, and performance testing to support consistent production quality. Corrosion-resistant configurations and customized materials can also be considered for challenging process gases.

This combination makes DV VACUUM particularly relevant to international buyers looking for customized liquid ring vacuum systems, process-oriented engineering, OEM support, and factory-direct industrial vacuum equipment sourcing from China.

Typical applications include chemical processing, pharmaceutical production, vacuum drying, distillation, solvent recovery, food processing, environmental engineering, degassing, and other industrial process vacuum applications.

Key advantages:

• DVL Series Liquid Ring Vacuum Pumps
• Complete Liquid Ring Vacuum Systems
• Roots-liquid ring and hybrid vacuum configurations
• Customized skid-mounted vacuum packages
• In-house manufacturing and engineering capability
• Corrosion-resistant options for process applications
• Suitable for customized OEM and B2B industrial projects

3. Shandong Huacheng Group

Shandong Huacheng Group, through Zibo Water Ring Vacuum Pump Factory, is an established Chinese manufacturer specializing in liquid ring vacuum pumps, compressors, and complete vacuum equipment.

The company's product portfolio covers numerous liquid ring designs, including 2BE, 2BV, 2BW, CL, SK, 2SK, and related vacuum pump and compressor configurations. This broad product selection allows the manufacturer to serve applications ranging from general vacuum generation to large industrial gas-handling systems.

Huacheng is particularly relevant for industrial buyers who require a wide selection of pumping capacities and configurations rather than a limited range of standardized compact pumps.

The company's liquid ring equipment can be applied in chemical processing, power generation, paper manufacturing, mining, metallurgy, pharmaceutical production, fertilizers, and other continuous industrial processes.

Key advantages:

• Extensive liquid ring pump and compressor portfolio
• 2BE, 2BV, 2BW, CL, SK and 2SK product families
• Large-capacity industrial pump options
• Complete vacuum units available
• Strong relevance to heavy process industries

4. Shandong Boke Vacuum Technology

Shandong Boke Vacuum Technology Co., Ltd. is a professional vacuum equipment manufacturer established in 2011. The company designs and manufactures liquid ring vacuum pumps, liquid ring compressors, dry screw vacuum pumps, Roots vacuum pumps, and complete vacuum systems.

Its liquid ring portfolio includes 2BV, 2BE1, 2BE3, and 2BED two-stage liquid ring vacuum pumps. The company also manufactures liquid ring compressors for gas compression and recovery applications.

The availability of both single-stage and two-stage equipment gives buyers greater flexibility when selecting pumps for different operating pressures, capacities, and process conditions.

Boke also supplies Roots-liquid ring vacuum systems, combining a Roots booster with a liquid ring backing pump for applications requiring higher pumping speeds or lower operating pressures while retaining good tolerance to wet process gases.

Key advantages:

• 2BV, 2BE1 and large 2BE3 liquid ring pumps
• 2BED two-stage liquid ring vacuum pumps
• Liquid ring compressors
• Roots-liquid ring vacuum packages
• Customization for industrial gas and process conditions

5. Zibo Vacuum Equipment Plant

Zibo Vacuum Equipment Plant Co., Ltd. is a long-established Chinese vacuum equipment manufacturer with experience in liquid ring vacuum pumps, liquid ring compressors, Roots pumps, dry screw pumps, rotary vane pumps, and complete vacuum engineering projects.

The company's liquid ring portfolio includes single-stage and two-stage water ring vacuum pumps, cone-type liquid ring pumps, compressors, and large complete gas-handling units.

Models such as the SKA, 2EK and CL series are designed for industrial vacuum and gas-compression duties, including installations in which moisture, process vapor, or demanding gas conditions are present.

Its long involvement with industrial vacuum equipment makes the company especially relevant to buyers working in petrochemicals, chemicals, fertilizers, pharmaceuticals, paper production, environmental processing, and other heavy industrial applications.

Key advantages:

• Long manufacturing history in industrial vacuum equipment
• Single-stage and two-stage liquid ring pumps
• Liquid ring compressors and gas-handling units
• Large industrial vacuum engineering capability
• Suitable for chemical and heavy process industries

6. Shandong Zhangqiu Blower

Shandong Zhangqiu Blower Co., Ltd. is an industrial equipment manufacturer whose product portfolio includes blowers, industrial pumps, pneumatic conveying equipment, and liquid ring vacuum pumps.

Its dedicated liquid ring vacuum pump range includes the LRA(C) Series Liquid Ring Vacuum Pump and 2BV Series Liquid Ring Vacuum Pump and Compressor.

This broader equipment portfolio makes Zhangqiu Blower particularly suitable for industrial projects where vacuum generation must be integrated with other process-air, conveying, or fluid-handling equipment.

For procurement teams seeking a diversified Chinese industrial equipment company rather than a supplier focused exclusively on vacuum technology, Zhangqiu Blower represents a useful alternative.

Key advantages:

• LRA(C) liquid ring vacuum pump range
• 2BV liquid ring vacuum pumps and compressors
• Broad industrial equipment portfolio
• Engineering support for integrated projects
• Suitable for industrial process-air and vacuum applications

7. FORYOU VACUUM

FORYOU VACUUM is a Chinese vacuum pump manufacturer specializing in water ring vacuum pumps, dry screw vacuum pumps, Roots pumps, and customized industrial vacuum solutions.

Its water ring product portfolio includes several 2BV and 2BE configurations, covering compact pumps for smaller installations as well as higher-capacity equipment for demanding industrial applications.

The company's 2BV range is intended for applications such as chemical processing, pharmaceuticals, food processing, and other industrial processes where stable handling of wet or condensable gas streams is required.

FORYOU is particularly relevant for overseas buyers seeking a direct Chinese manufacturer with multiple vacuum technologies and an export-oriented product offering.

Key advantages:

• 2BV and 2BE water ring vacuum pump ranges
• Compact and higher-capacity configurations
• Dry screw and Roots pumps also available
• Customized vacuum systems
• Export-oriented industrial supply

8. Shanghai Kaiquan Pump Group

Shanghai Kaiquan Pump Group is a large Chinese pump manufacturer with a broad product portfolio serving industrial, infrastructure, municipal, energy, and process applications.

Its vacuum product offering includes multiple water ring and liquid ring series, such as 2BEX, 2BVX, 2BVF, 2BEK, 2BWD, and complete water ring vacuum systems.

These pumps can support applications including vacuum filtration, distillation, sterilization, degassing, drying, solvent recovery, vacuum packaging, and industrial water systems.

As a diversified pump group, Kaiquan is especially relevant to large industrial buyers, EPC contractors, and projects requiring multiple pump technologies from a single supplier.

Key advantages:

• Multiple water ring and liquid ring pump families
• 2BEX, 2BVX, 2BEK and 2BWD series
• Complete vacuum system equipment
• Large diversified pump manufacturing capability
• Suitable for industrial and infrastructure projects

9. Zibo Sterling Vacuum Equipment

Zibo Sterling Vacuum Equipment is a specialized Chinese vacuum pump manufacturer focused on liquid ring vacuum pumps and dry screw vacuum pump technologies.

Its liquid ring offering includes 2BE and 2BV-type water ring vacuum pumps intended for industrial vacuum generation and continuous process applications.

As a more specialized vacuum equipment supplier, Sterling can be attractive to buyers who prefer working with a manufacturer focused primarily on vacuum pump production rather than a large diversified machinery group.

Its equipment can be considered for applications involving general industrial vacuum, process gases, water vapor, and other duties where robust liquid ring technology is preferred.

Key advantages:

• Specialization in liquid ring and screw vacuum pumps
• 2BE and 2BV water ring pump options
• Industrial manufacturing capability
• Suitable for continuous process applications
• Alternative option for China-based vacuum sourcing

10. Greentech International

Greentech International is a China-based industrial equipment supplier and manufacturer whose product range includes liquid ring vacuum pumps, Roots blowers, side-channel blowers, centrifugal blowers, and related industrial air systems.

Its liquid ring vacuum pump portfolio includes 2BV, 2BE1, 2BE3, 2BE4, and 2SK series, giving customers access to both compact and larger industrial pumping configurations.

The company also offers Roots pumps and packaged vacuum units, allowing buyers to source several related technologies from the same supplier.

Greentech can therefore be considered by international buyers seeking cost-conscious industrial vacuum equipment, broad model availability, and combined blower and vacuum pump sourcing.

Key advantages:

• 2BV, 2BE1, 2BE3 and 2BE4 liquid ring pumps
• 2SK two-stage water ring vacuum pumps
• Roots vacuum pumps and package units
• Broad blower and vacuum equipment portfolio
• Suitable for international B2B sourcing

How to Choose a Liquid Ring Vacuum Pump Manufacturer in China

Selecting the best liquid ring vacuum pump manufacturer requires more than comparing the rated pumping capacity or initial purchase price. The correct pump must be matched to the actual gas composition, operating pressure, sealing liquid, temperature, materials, and process requirements.

Important factors include:

• Required pumping capacity: Determine the actual gas load and required pumping speed rather than selecting a pump based only on connection size or motor power.
• Operating pressure: Different single-stage and two-stage liquid ring designs operate most efficiently within different pressure ranges.
• Process gas composition: Water vapor, solvents, corrosive gases, toxic gases, dust, and other contaminants can affect pump material and sealing-liquid selection.
• Sealing liquid: Water is widely used, but other compatible liquids may be required when process conditions or achievable vacuum levels demand them.
• Material selection: Stainless steel, coated components, specialized seals, and corrosion-resistant materials may be necessary for chemical and pharmaceutical processes.
• Single-stage vs. two-stage: Two-stage liquid ring pumps can be preferred where lower suction pressures are required.
• Closed-loop operation: Solvent recovery or water-saving applications may require separators, heat exchangers, circulation pumps, and closed-loop sealing-liquid systems.
• Complete system engineering: Large industrial installations often require more than a standalone pump, including separators, condensers, piping, instruments, controls, Roots boosters, and skid structures.
• Explosion-proof requirements: Flammable or hazardous gases may require appropriately specified motors, instruments, materials, and system designs.
• After-sales support: Spare parts, technical documentation, commissioning assistance, maintenance guidance, and long-term service capability should also be evaluated.

Liquid Ring Vacuum Pump vs. Dry Screw Vacuum Pump

Both liquid ring vacuum pumps and dry screw vacuum pumps are widely used in industrial process vacuum applications, but they are optimized for different operating conditions.

Liquid ring pumps are particularly attractive when the process contains large quantities of water vapor, condensable gases, liquid carryover, or dirty gas streams. Their relatively simple internal structure and liquid-sealed compression mechanism provide robust operation under many wet-process conditions.

Dry screw vacuum pumps, by comparison, operate without sealing liquid inside the compression chamber. They are often selected where oil-free dry operation, reduced wastewater generation, solvent recovery, deeper vacuum, or cleaner process conditions are priorities.

Neither technology is universally better. The correct choice depends on the gas composition, required vacuum level, condensation load, corrosion conditions, operating cost, environmental requirements, and maintenance strategy.

In some applications, a Roots booster combined with a liquid ring vacuum pump can provide an effective compromise, increasing pumping speed and extending the useful operating pressure range while retaining the liquid ring pump's tolerance for wet process gases.

Common Applications of Liquid Ring Vacuum Pumps

Liquid ring vacuum pumps remain widely used across process industries because they can provide reliable vacuum generation while handling moisture and condensable vapors.

• Chemical processing: distillation, evaporation, filtration, drying, crystallization, degassing, and solvent recovery
• Pharmaceutical manufacturing: vacuum drying, concentration, filtration, and solvent handling
• Pulp and paper: dewatering, vacuum boxes, filtration, and process vacuum systems
• Power generation: condenser evacuation and vacuum maintenance
• Food processing: vacuum concentration, evaporation, drying, and packaging
• Plastics: extrusion degassing and process vacuum
• Oil and gas: gas recovery, vapor handling, and process vacuum
• Environmental engineering: VOC recovery, gas extraction, and wastewater-related processes
• Mining and metallurgy: filtration, gas handling, and industrial vacuum processes

Conclusion

China has a well-developed manufacturing base for liquid ring vacuum pumps, water ring vacuum pumps, compressors, and complete industrial vacuum systems. Buyers can choose between large established manufacturers, specialized vacuum technology companies, and flexible suppliers focused on customized process equipment.

CHINCO Vacuum Technique, Shandong Huacheng Group, Shandong Boke Vacuum, Zibo Vacuum Equipment Plant, and Shanghai Kaiquan provide broad liquid ring product ranges suitable for a variety of industrial requirements.

For buyers who require greater customization and complete process-oriented vacuum solutions, DV VACUUM is particularly worth considering. Its product portfolio combines DVL Liquid Ring Vacuum Pumps with Roots, Dry Screw, and engineered vacuum system technologies, allowing the pump and complete vacuum package to be configured according to actual process conditions.

Other manufacturers such as Shandong Zhangqiu Blower, FORYOU VACUUM, Zibo Sterling Vacuum Equipment, and Greentech International provide additional options for buyers comparing production capacity, technical specifications, pricing, customization, and export support.

Ultimately, the best liquid ring vacuum pump manufacturer in China is not necessarily the supplier offering the lowest initial price. Industrial buyers should prioritize the manufacturer that can correctly match pumping capacity, operating pressure, gas composition, sealing liquid, material selection, corrosion resistance, cooling requirements, controls, and system configuration to the actual production process.