A freeze-drying pump must be selected together with the dryer, condenser, sample and pressure cycle. The gas reaching the pump can differ from the initial sample vapor because the condenser removes part of the load. The actual residual gas, leakage and operating conditions determine the suitable configuration.
The ten entries below were selected from the supplied directory for pumps, freeze-dryer equipment or system capability in China. LABOAO and BOTH are identified as equipment-integration routes with pump origin to be confirmed. Other portfolio entries need a model-specific dryer compatibility review. The order is not a market-share or universal performance ranking.
Quick takeaway: Use the dryer maker's requirements to shortlist models. LABOAO provides matched equipment and pump supply, Geowell offers an oil-free scroll inquiry route and DV Vacuum can discuss industrial packages. Require the selected pump manufacturer and medium compatibility in every offer.
- LABOAO
- Geowell
- DV Vacuum
- Souz Vacuum
- BOTH
- PRONOTEK
- Yitaer Vacuum Technology
- Mibay Vacuum
- Zhongtian Pumps
- VPS / Weipengsheng Group
Top 10 Vacuum Pump Manufacturers for Freeze Drying in China: Buying Guide: Quick Comparison
| Company | Published Product Focus | Best-Fit Starting Point |
|---|---|---|
| LABOAO | Laboratory and production freeze dryers; vacuum pump supply and integration | Matched freeze-dryer and pump supply |
| Geowell | Oil-free scroll pumps, vacuum units and service components | Oil-free scroll selection for an identified dryer duty |
| DV Vacuum | Roots, dry screw, liquid ring and oil rotary vane options; customized vacuum packages | Industrial dryer backing or pump-package engineering |
| Souz Vacuum | SV single-stage and 2XZ/2X two-stage oil-sealed pumps; dry pumps and vacuum units | Vane or dry pump comparisons for dryer equipment |
| BOTH | Freeze-dryer equipment, turnkey solutions and vacuum pump supply | Turnkey dryer integration and pump supply |
| PRONOTEK | PNK SP and DP-C rotary vane ranges; dry screw, scroll and vacuum units | Named rotary vane and dry equipment inquiry |
| Yitaer Vacuum Technology | Two-stage rotary vane, dry screw, scroll-related and other vacuum technologies | Two-stage vane or dry alternatives for equipment integration |
| Mibay Vacuum | Dry screw and oil vacuum pumps; Roots equipment and wider model supply | Manufactured and sourced pump configurations |
| Zhongtian Pumps | XMV, 2XZ and 2X rotary vane pumps; LG/LGB dry screw and Roots equipment | Identifiable vane and dry screw model families |
| VPS / Weipengsheng Group | VPS and HC dry screw pumps, Roots equipment and vacuum units | Larger dry screw or booster-backed dryer packages |
1. LABOAO
Website: https://www.laboao.com/
Core Technologies: Laboratory and production freeze dryers; vacuum pump supply and integration
Best Fit: Matched freeze-dryer and pump supply
Company Overview: LABOAO publishes freeze dryers and vacuum pump categories within a broader laboratory equipment portfolio. Its official product information includes rotary vane and dry scroll supply. Distinguish its dryer integration and supplied pump offering from the company actually manufacturing the selected pump. Its official vacuum pump and freeze-dryer categories give an explicit integration route. See LABOAO vacuum pump supply.
Buying Tips: Specify dryer and sample. Obtain the recommended pump manufacturer, model, connections, controls and warranty division.
2. Geowell
Website: https://www.geowell.com.cn/
Core Technologies: Oil-free scroll pumps, vacuum units and service components
Best Fit: Oil-free scroll selection for an identified dryer duty
Company Overview: Geowell's supplied Chinese profile identifies oil-free scroll vacuum pumps, vacuum units and maintenance components, with food, pharmaceutical and analytical equipment markets. This provides an oil-free model inquiry route. It does not independently establish that every scroll model is suitable for every freeze-dryer load or solvent. Its scroll product category supports an inquiry, but not universal solvent or freeze-dryer suitability.
Buying Tips: Request the model curve and sample compatibility. Confirm pressure under residual load, wear parts, inlet protection and dryer interfaces.
3. DV Vacuum
Website: https://www.dvvacuum.com/
Core Technologies: Roots, dry screw, liquid ring and oil rotary vane options; customized vacuum packages
Best Fit: Industrial dryer backing or pump-package engineering
Company Overview: DV Vacuum publishes industrial pumps and integrated vacuum systems configured around medium, pressure, pumping speed and utilities. Its core manufacturing information emphasizes Roots, dry screw and liquid ring equipment, with oil rotary vane options also listed. Confirm manufacturing responsibility and the exact delivered scope for the proposed model. The collected information does not establish a dedicated freeze-dryer series for every sample.
Buying Tips: Provide condenser conditions, residual vapor and pressure cycle. Ask for the model, protection, utilities and integrated acceptance responsibilities.
4. Souz Vacuum
Website: https://www.souzvac.com/
Core Technologies: SV single-stage and 2XZ/2X two-stage oil-sealed pumps; dry pumps and vacuum units
Best Fit: Vane or dry pump comparisons for dryer equipment
Company Overview: Souz publishes named oil-sealed rotary vane families together with dry and liquid ring pumps and several Roots-based system combinations. Its supplied materials describe vacuum manufacturing and export activity. The identifiable model families support a comparison of standalone pumping and backing duties. Named oil-sealed and dry technologies give model inquiry options; dryer suitability remains specific.
Buying Tips: Compare offered models against the dryer duty. Define oil, vapor protection, gas ballast where relevant and the service plan.
5. BOTH
Website: https://www.bothsh.com/
Core Technologies: Freeze-dryer equipment, turnkey solutions and vacuum pump supply
Best Fit: Turnkey dryer integration and pump supply
Company Overview: BOTH publishes vacuum freeze dryers, turnkey equipment solutions and a vacuum pump category. Its supplied information supports an equipment-integration inquiry, especially where the buyer needs a coordinated dryer package. Obtain the exact pump manufacturer and model, compatibility data and warranty boundary. Its explicit freeze-dryer solution category is an equipment route, with actual pump manufacture to be identified.
Buying Tips: Request the complete dryer bill of materials and pump identity. Define condenser matching, controls, process testing and support boundaries.
6. PRONOTEK
Website: https://www.pronotek.com/
Core Technologies: PNK SP and DP-C rotary vane ranges; dry screw, scroll and vacuum units
Best Fit: Named rotary vane and dry equipment inquiry
Company Overview: PRONOTEK publishes single-stage and double-stage rotary vane series together with screw, scroll and system categories. Its supplied material provides identifiable pump families for a technical inquiry. Freeze-drying compatibility must be established for the actual model, medium and dryer rather than inferred from the wider range. Its DP-C double-stage and other families support technical selection, subject to dryer compatibility.
Buying Tips: Request the exact series and stage data. Discuss sample medium, residual vapor, protection, electrical and maintenance requirements.
7. Yitaer Vacuum Technology
Website: https://www.yitaervacuum.net/
Core Technologies: Two-stage rotary vane, dry screw, scroll-related and other vacuum technologies
Best Fit: Two-stage vane or dry alternatives for equipment integration
Company Overview: Yitaer publishes named two-stage rotary vane models and a broader range of dry vacuum equipment and systems. Its supplied company profile describes manufacturing and assembly resources. Evaluate each mechanism against the pressure and residual vapor duty of the specific dryer. Choose the actual mechanism based on required pressure and permitted sample conditions.
Buying Tips: Obtain current model data and a compatibility statement. Define trapping, oil or wear parts and the required dryer-control interface.
8. Mibay Vacuum
Website: https://www.mbvacuum.com/
Core Technologies: Dry screw and oil vacuum pumps; Roots equipment and wider model supply
Best Fit: Manufactured and sourced pump configurations
Company Overview: Mibay publishes its own manufactured pump series and a wider catalog referencing other brands. It also lists dry vacuum and system equipment. A freeze-dryer offer should identify the actual manufacturer and model and clarify the division between internal production, sourced products and integration. Clarify which model is internally made and which is another-brand or replacement offer.
Buying Tips: Request origin, curve, sample limits and accessories. Confirm the dryer acceptance conditions and who fulfills pump warranty and service.
9. Zhongtian Pumps
Website: https://www.ztpumps.com/
Core Technologies: XMV, 2XZ and 2X rotary vane pumps; LG/LGB dry screw and Roots equipment
Best Fit: Identifiable vane and dry screw model families
Company Overview: Nantong Zhongtian publishes single-stage, two-stage direct-coupled and two-stage belt-driven rotary vane ranges, plus dry screw and Roots equipment. Its materials also describe OEM and integrated system offerings. Compare the actual model and construction, rather than treating a family name as the complete specification. Its portfolio offers several mechanisms but does not make every variant freeze-dryer compatible.
Buying Tips: Request a model-specific dryer review and connection drawing. Define pressure, residual load, utility and maintenance needs.
10. VPS / Weipengsheng Group
Website: https://www.drypump.com.cn/
Core Technologies: VPS and HC dry screw pumps, Roots equipment and vacuum units
Best Fit: Larger dry screw or booster-backed dryer packages
Company Overview: VPS describes development and manufacturing of dry screw pumps and vacuum units for industrial processes. Its supplied information identifies chemical and pharmaceutical applications and several backing technologies. Confirm the contracting entity, production site and complete configured equipment scope. Its industrial dry portfolio supports a configured production inquiry rather than generic lab compatibility.
Buying Tips: Supply cycle and gas data. Obtain backing and booster roles, thermal and utility requirements and complete package acceptance scope.
Technology and System Scope Comparison
| Configuration | Application Starting Point | What to Verify |
|---|---|---|
| Oil-sealed rotary vane | Compatible laboratory or equipment duty | Oil, vapor protection, gas ballast and service |
| Dry scroll | Compatible oil-free laboratory pumping | Pressure under load, sample limits and wear parts |
| Industrial dry package | Larger residual gas and production duty | Utilities, controls and cleaning |
| Matched dryer supply | Equipment with a recommended pump | Pump manufacturer, interfaces and acceptance |
How to Choose a Freeze-Drying Vacuum Pump Supplier in China
1. Start With the Dryer Requirements
Provide dryer model, chamber and condenser data, pressure stages and pump-down time. Include sample quantity and composition. Ask for the specified pump interface and acceptance procedure so that the proposed model is compared with the complete instrument or plant duty.
2. Define the Load After the Condenser
Supply residual vapor, noncondensable gas and expected leakage. Describe condenser temperatures and operating capacity and include cleaning or defrost conditions. A clean-gas ultimate pressure does not by itself demonstrate performance during the drying cycle.
3. Review Medium and Operating Procedures
Request permitted sample conditions, gas ballast or other protection where appropriate and approved startup, shutdown and cleaning instructions. Distinguish oil-free construction from solvent compatibility and define the accessories needed to keep the pump within its operating envelope.
4. Identify Manufacturing and Integration Roles
Obtain the actual pump manufacturer and model even when supplied with a dryer. Establish which party selects, connects and controls the equipment and which party provides warranty and repair. A turnkey equipment brand should not automatically be called the manufacturer of every component.
5. Agree on Cycle-Based Verification
Define the pump factory test separately from the integrated dryer or process test. Agree on measurement locations, sample or load and utility conditions. Confirm installation, commissioning, maintenance and spare parts appropriate to the operating schedule.
What Affects the Cost of the Pump and Package?
Compare quotations on the same operating duty and delivered scope. Purchase price should be reviewed with the equipment, utilities, documentation and service needed for the actual installation. Ask suppliers to identify their assumptions and any work assigned to other parties.
- Pump mechanism, pressure and residual throughput
- Sample-compatible construction and vapor protection
- Dryer connection, controls and accessories
- Cooling, ventilation or other model utilities
- Consumables, commissioning and repair support
Request a model specification, an equipment list, a performance basis and a maintenance plan. These establish a fair comparison and a practical acceptance reference for the delivered package.
FAQs – Vacuum Pump Manufacturer for Freeze Drying in China
Q1: Does every dry scroll pump fit a freeze dryer?
No. Verify pressure under load, sample compatibility and interface requirements for the exact model.
Q2: Why does the condenser matter?
It changes the vapor reaching the pump. Its performance and operation must be included in sizing and acceptance.
Q3: Are LABOAO and BOTH necessarily the pump manufacturers?
Not for every supplied configuration. Identify the actual pump producer and distinguish dryer integration from pump manufacture.
Q4: Can I replace the pump by matching flow only?
No. Compare pressure curves, vapor limits, connections, controls, electrical supply and maintenance requirements.
Q5: Does oil-free mean compatible with every solvent?
No. Wetted materials and the permitted medium still need a model-specific review.
Q6: What should DV Vacuum confirm?
Request an identified pump or package, dryer-specific compatibility and clear responsibilities for controls, testing and service.
Which Supplier Is the Right Fit?
Start with the dryer specification and a compatible model. Compare LABOAO's equipment route, Geowell's scroll inquiry and DV Vacuum's industrial package capability with the other named ranges. Choose a documented residual-load duty and clear pump-origin and integration responsibilities.
Send each shortlisted company the same process and installation information. Obtain an identified model, supporting technical data, scope of supply and service plan before approving an order.