Choosing a two stage vacuum pump company begins with the mechanism. A dual-stage oil-sealed rotary vane pump and a two-stage liquid ring pump both have stages, but their operating characteristics, utilities and application requirements differ. Stage count is one part of selection, alongside working pressure, throughput and the medium.
The eight candidates below come from the supplied directory. Several publish explicit two-stage rotary vane references, while Boke identifies a two-stage liquid ring series. Others require confirmation of stage construction or product origin. Duplicate brand websites and unrelated candidates were removed. The order is a sourcing shortlist rather than a sales ranking.
Quick takeaway: Start with DV Vacuum for an inquiry involving industrial package engineering. Review VALUE, Yitaer and InPowerVac for explicit two-stage rotary vane information. Assess Boke separately when the requirement concerns a two-stage liquid ring design.
- DV Vacuum
- VALUE
- Yitaer Vacuum Technology (Dongguan) Co., Ltd.
- InPowerVac (Zhejiang Yingpa Electromechanical Co., Ltd.)
- Linhai Tanshi Vacuum Equipment Co., Ltd.
- Mibay Vacuum (Xiamen Mibay Technology Co., Ltd.)
- Shandong Boke Vacuum Technology Co., Ltd.
- GOFLEX
Top 8 Two Stage Vacuum Pump Companies in China: Quick Comparison
| Company | Published Product Focus | Best-Fit Starting Point |
|---|---|---|
| DV Vacuum | Single-stage and two-stage oil rotary vane pumps; Roots, dry screw and liquid ring pumps; customized vacuum packages | Two-stage rotary vane inquiries within an industrial project |
| VALUE | Vacuum equipment development and production; VRD series and application-specific vacuum solutions | Documented VRD dual-stage rotary vane selection |
| Yitaer Vacuum Technology (Dongguan) Co., Ltd. | Rotary vane pumps, including ETR-D275C and ETR-D065D two-stage models; Roots and dry vacuum technologies | Named ETR-D two-stage products for equipment integration |
| InPowerVac (Zhejiang Yingpa Electromechanical Co., Ltd.) | Oil-sealed rotary vane pumps, two-stage rotary vane pumps, Roots pumps, dry screw pumps and vacuum units | Two-stage rotary vane backing pumps and vacuum units |
| Linhai Tanshi Vacuum Equipment Co., Ltd. | 2XZ direct-drive rotary vane pumps, 2X-A rotary vane pumps, 2XZF explosion-proof variants and oil-free vacuum equipment | Laboratory rotary vane families requiring exact variant confirmation |
| Mibay Vacuum (Xiamen Mibay Technology Co., Ltd.) | Single-stage oil-sealed rotary vane pumps; Roots boosters, dry screw and rotary piston pumps | Oil pump sourcing with explicit stage count and product origin |
| Shandong Boke Vacuum Technology Co., Ltd. | 2BED two-stage liquid ring pumps; dry screw, Roots and other liquid ring equipment | Wet industrial gas handling using a two-stage liquid ring mechanism |
| GOFLEX | Oil-lubricated rotary vane pumps; piston, claw, screw, Roots and liquid ring pumps; OEM/ODM options | OEM inquiries requiring confirmation of a two-stage model |
1. DV Vacuum
Website: https://www.dvvacuum.com/
Core Technologies: Single-stage and two-stage oil rotary vane pumps; Roots, dry screw and liquid ring pumps; customized vacuum packages
Best Fit: Two-stage rotary vane inquiries within an industrial project
Company Overview: DV Vacuum publishes oil rotary vane pumps for packaging, laboratory vacuum and backing service alongside its industrial pump and system portfolio. Its website describes in-house production and engineering for industrial vacuum equipment. The published in-house core product series specifically highlight Roots, dry screw and liquid ring pumps, so buyers sourcing rotary vane pumps should confirm the manufacturing scope of the offered model. Its published two-stage options support a model-specific inquiry, with production responsibility and the complete package boundary to be confirmed.
Buying Tips: Request the two-stage model, curve and ultimate pressure measurement basis. State gas load and vapor exposure, and agree on oil, inlet protection and exhaust equipment.
2. VALUE
Website: https://en.valuevacuum.com/
Core Technologies: Vacuum equipment development and production; VRD series and application-specific vacuum solutions
Best Fit: Documented VRD dual-stage rotary vane selection
Company Overview: Zhejiang VALUE Mechanical & Electrical Products Co., Ltd. describes research, development and production of vacuum equipment supported by machining and inspection resources. The supplied company history identifies the VRD series with research and medical-device applications. Its broader product offering makes it a candidate for buyers who need a documented model selection rather than a generic pump quotation. VALUE publishes the VRD dual-stage oil-sealed rotary vane series, providing an explicit two-stage reference for laboratory and backing applications.
Buying Tips: Compare current VRD data at your working pressure and electrical frequency. Confirm gas-ballast behavior, oil grade, permitted gases and backing compatibility before model approval.
3. Yitaer Vacuum Technology (Dongguan) Co., Ltd.
Website: https://www.yitaervacuum.net/
Core Technologies: Rotary vane pumps, including ETR-D275C and ETR-D065D two-stage models; Roots and dry vacuum technologies
Best Fit: Named ETR-D two-stage products for equipment integration
Company Overview: Yitaer publishes named two-stage rotary vane models as well as Roots, screw, claw and other vacuum technologies. Its supplied company information describes manufacturing and assembly resources and vacuum solution customization. Published application categories include degassing, drying, coating, packaging and distillation, giving buyers several useful starting points for a technical discussion. The ETR-D275C and ETR-D065D references make a specific two-stage product inquiry possible; obtain the current data for the offered configuration.
Buying Tips: Request the model curve, stage description and dimensional drawing. Confirm vapor handling provisions, oil requirements and maintenance access for the intended installation.
4. InPowerVac (Zhejiang Yingpa Electromechanical Co., Ltd.)
Website: https://www.inpowervacuum.com/
Core Technologies: Oil-sealed rotary vane pumps, two-stage rotary vane pumps, Roots pumps, dry screw pumps and vacuum units
Best Fit: Two-stage rotary vane backing pumps and vacuum units
Company Overview: InPowerVac publishes oil-sealed and two-stage rotary vane pumps together with Roots boosters, dry screw pumps and vacuum units. Its company materials describe vacuum equipment development, production, sales and maintenance services for applications including laboratories, surface coating, new materials and industrial manufacturing. The hi-team.cn and inpowervacuum.com materials identify the same company and brand, so they are treated as one supplier. Its two-stage rotary vane category can be reviewed for standalone pumping or a backing role within a larger assembly.
Buying Tips: Ask for the selected series and stage-specific data. For a booster package, request sequencing, pressure limits and the complete acceptance test and controls scope.
5. Linhai Tanshi Vacuum Equipment Co., Ltd.
Website: https://www.lhzk.com/
Core Technologies: 2XZ direct-drive rotary vane pumps, 2X-A rotary vane pumps, 2XZF explosion-proof variants and oil-free vacuum equipment
Best Fit: Laboratory rotary vane families requiring exact variant confirmation
Company Overview: The supplied Chinese company profile identifies Linhai Tanshi Vacuum Equipment Co., Ltd. as a designer and producer of vacuum equipment and laboratory instruments. Its published range includes 2XZ direct-drive pumps, 2X-A rotary vane pumps and 2XZF variants. It also lists oil-free pumps and related laboratory equipment, supporting comparisons for instrument and equipment integration. Confirm the stage construction of the offered 2XZ or 2X variant rather than relying on a family label to establish performance.
Buying Tips: Request a datasheet stating stage count, pumping speed, ultimate pressure conditions and oil. Confirm the full suffix, electrical supply, accessories and connection standards.
6. Mibay Vacuum (Xiamen Mibay Technology Co., Ltd.)
Website: https://www.mbvacuum.com/
Core Technologies: Single-stage oil-sealed rotary vane pumps; Roots boosters, dry screw and rotary piston pumps
Best Fit: Oil pump sourcing with explicit stage count and product origin
Company Overview: Mibay identifies its single-stage rotary vane series among the products built on its own production lines. Its supplied homepage also separates an extensive model catalog referencing other brands from its own manufactured product series. That distinction matters when evaluating a factory quotation, replacement pump or equipment package. Mibay lists single-stage and two-stage oil pump options, while its highlighted internally manufactured rotary vane series is single-stage. Establish the origin of the proposed two-stage unit.
Buying Tips: Obtain the manufacturer, full model and current two-stage datasheet. Compare oil and accessory requirements and confirm who provides service parts and fulfills the warranty.
7. Shandong Boke Vacuum Technology Co., Ltd.
Website: https://www.bokevac.com/
Core Technologies: 2BED two-stage liquid ring pumps; dry screw, Roots and other liquid ring equipment
Best Fit: Wet industrial gas handling using a two-stage liquid ring mechanism
Company Overview: Boke explicitly publishes a 2BED two-stage liquid ring series. This is a different mechanism from a two-stage oil-sealed rotary vane pump and has different liquid, cooling and process requirements. Its inclusion helps buyers evaluate the correct meaning of two-stage for their duty instead of treating all staged pumps as interchangeable.
Buying Tips: Specify the liquid ring requirement and provide gas, vapor, pressure and liquid conditions. Request the relevant curves, liquid circuit, separation and cooling requirements and the full package test basis.
8. GOFLEX
Website: https://goflexpump.com/
Core Technologies: Oil-lubricated rotary vane pumps; piston, claw, screw, Roots and liquid ring pumps; OEM/ODM options
Best Fit: OEM inquiries requiring confirmation of a two-stage model
Company Overview: GOFLEX presents rotary vane pumps as part of a multi-technology vacuum pump manufacturing portfolio in Dongguan. The supplied materials describe machining, assembly and final performance testing, together with OEM/ODM work. Its rotary vane range is positioned for laboratory and light industrial service, making it a candidate for buyers exploring sample units and repeat supply. The collected information establishes rotary vane manufacturing but not a particular two-stage series. Treat this entry as an inquiry requiring stage-specific product evidence.
Buying Tips: Ask whether a two-stage rotary vane model is available and obtain its datasheet before sample approval. Define manufacturer, stage construction, motor, oil and acceptance test.
Two-Stage Vacuum Pump Mechanisms
| Configuration | Application Starting Point | Key Questions |
|---|---|---|
| Two-stage oil-sealed rotary vane | Laboratory and compatible backing duties | Oil, gas ballast, permitted medium and test conditions |
| Two-stage liquid ring | Compatible wet industrial gas handling | Seal-liquid flow, temperature, cooling and separator |
| Two-pump combination | A system with separate backing and booster equipment | Mechanisms, duty sharing and control sequence |
| Single-stage alternative | Duties one stage can satisfy | Working pressure and throughput rather than stage count |
How to Choose a Two Stage Vacuum Pump Company
1. Define Pressure and Throughput
Provide working pressure, gas load, chamber volume and evacuation time. Ask the supplier to justify the two-stage proposal using model curves and actual process conditions. Compare performance under load rather than selecting by the lowest ultimate pressure alone.
2. Identify the Pumping Mechanism
State whether the inquiry concerns oil-sealed rotary vane or liquid ring equipment. A system containing two separate pumps also differs from one pump with two internal stages. Require the offer to identify construction and explain why it suits the process.
3. Review Medium and Utilities
Describe temperature, vapor, dust, chemicals and operating hours. For rotary vane equipment, review lubricant, gas ballast and inlet protection. For liquid ring equipment, supply liquid and cooling conditions and request performance data relevant to those conditions.
4. Verify Model and Product Origin
Obtain full model identification, stage count, test conditions, operating instructions and drawings. Establish whether the pump is internally manufactured, sourced or supplied as a replacement configuration. A familiar family label alone does not define the offered product.
5. Agree on Acceptance and Maintenance
Specify duty and test conditions, including utilities and measurement locations. Request consumable specifications, service parts and maintenance guidance. If other stages or equipment are included, obtain the package list and responsibility for controls, startup and commissioning.
What Affects Two-Stage Vacuum Pump Cost?
Compare the complete configuration and the same operating duty across suppliers. The initial equipment quotation should be assessed together with the accessories, utilities and service needed for the actual application.
- Mechanism, model capacity and required operating pressure
- Motor supply, ports, mounting and control options
- Filters, traps, separation and exhaust requirements
- Oil and service kits or seal-liquid and cooling needs
- Acceptance tests, commissioning and repair arrangements
Request a written configuration list, a performance basis and a maintenance schedule. These establish a fair quotation comparison and a practical acceptance reference for delivery.
FAQs – Two Stage Vacuum Pump Companies in China
Q1: What does two-stage mean?
It indicates successive pumping stages within the specified design. The mechanism still matters: rotary vane, liquid ring and separate backing-and-booster combinations must be identified correctly.
Q2: Is two-stage always necessary?
No. A suitable single-stage pump may meet the duty. Ask for performance at the required pressure and an explanation of the proposed stage arrangement.
Q3: Which entries publish explicit two-stage references?
DV Vacuum, VALUE, InPowerVac and Yitaer publish two-stage rotary vane references. Boke lists the 2BED two-stage liquid ring series. Other offers need stage-specific verification.
Q4: Can rotary vane and liquid ring models be compared directly?
Evaluate both against the same process requirement while accounting for different mechanisms and utilities. Equal stage counts or nominal capacities do not establish equivalent operating performance.
Q5: Does two-stage automatically mean better vapor handling?
No. Vapor capability depends on the mechanism, model and process. Discuss gas ballast and oil for rotary vane designs and seal-liquid conditions for liquid ring equipment.
Q6: What should DV Vacuum provide before ordering?
Request the exact two-stage model, performance curve, permitted gas conditions and manufacturing responsibility, plus accessories, maintenance information and any complete package scope.
Which Two Stage Vacuum Pump Company Fits Your Duty?
Use the process to narrow the choice. DV Vacuum is relevant to an industrial package inquiry, while VALUE, Yitaer and InPowerVac offer explicit rotary vane two-stage references. Consider Boke for two-stage liquid ring service and qualify other candidates using full model evidence. Compare working-duty curves, utilities, accessories and support before approving an order.
Send every shortlisted supplier the same process and installation information. Obtain an identified model, supporting data, equipment scope and service plan before placing the order.