Are you looking for a reliable explosion proof vacuum pump manufacturer in China for chemical processing, solvent recovery, pharmaceutical manufacturing, petrochemical production, vacuum drying, or another operation involving flammable gases or vapors?
An explosion-proof vacuum pump is not simply a conventional pump fitted with an explosion-proof electric motor. For hazardous processes, the pump itself, its seals, moving parts, gas path, temperature controls, instruments, and complete system may all need a suitable ignition-risk assessment. The required protection depends on the classified location, whether an explosive mixture may occur inside the pump, and the destination market's applicable standards.
China offers manufacturers and specialized suppliers of dry screw, liquid ring, Roots, and integrated process-vacuum systems. However, product configurations and certification coverage vary significantly. This guide compares eight relevant China-based suppliers and explains the information buyers should verify before placing an order.
Editorial note: The numbering organizes a supplier shortlist, not an independently audited ranking. Published evidence varies: some manufacturers publish ATEX-related product information, while others describe explosion-proof options or appear in supplier listings. Never assume an entire product family has hazardous-area approval without inspecting the exact documentation.
Quick Navigation
- DV VACUUM
- EVP Vacuum Technology
- Shandong Boke Vacuum Technology
- Vacculex Vacuum Equipment
- Shandong Huacheng Group
- Lvsong / Elm Vacuum
- Guangdong Wordfik Vacuum Technology
- Shandong Kaien Vacuum Technology
1. DV VACUUM
Website: https://www.dvvacuum.com/
Supply Model: Shanghai, China-based manufacturer of industrial vacuum pumps and engineered vacuum systems.
Relevant Products: DVS dry screw vacuum pumps, DVB Roots vacuum pumps, DVL liquid ring vacuum pumps, and customized Roots-dry screw or liquid-ring packages.
Why Consider DV VACUUM: DV VACUUM develops core pump ranges in-house and works with customers on application-specific explosion-proof configurations. Its website describes ATEX certification for applicable product lines rather than every pump in the catalog. Pump selection can also include sealing, cooling, corrosion-resistant materials, and integrated vacuum system controls.
Best Suited For: Chemical processing, pharmaceuticals, solvent recovery, vacuum distillation, drying, and customized process vacuum projects.
Before Purchasing: Request the exact ATEX certificate and model coverage, intended internal and external zones, gas group and temperature class, operating-pressure profile, gas composition, seal plan, purge requirements, and system-level safety documentation.
2. EVP Vacuum Technology
Website: https://www.evpvacuum.com/
Supply Model: Shanghai-based vacuum equipment and technical solution supplier serving industrial processing.
Relevant Products: 2BV6 explosion-proof motor liquid ring vacuum pumps, process liquid ring units, dry screw pumps with optional explosion-proof configurations, and customized vacuum systems.
Why Consider EVP Vacuum Technology: EVP publishes a 2BV6 series with specific explosion-proof motor designations, together with application content on explosion-proof liquid-ring and dry vacuum systems. This makes it relevant to buyers who need product-level configuration discussions rather than generic hazardous-area marketing.
Best Suited For: Petrochemical processes, chemical plants, wet and vapor-rich vacuum duties, and industrial vacuum packages.
Before Purchasing: Check the model-specific motor protection designation and whether the pump assembly itself is assessed for the explosive atmosphere, including internal gas exposure, mechanical ignition sources, seals, instruments, and local certification.
3. Shandong Boke Vacuum Technology
Website: https://www.bokevac.com/
Supply Model: China-based manufacturer of industrial vacuum pumps and vacuum process equipment.
Relevant Products: VDP explosion-proof dry screw vacuum pumps, Roots vacuum pumps, liquid ring pumps, and customized vacuum systems.
Why Consider Shandong Boke Vacuum Technology: Boke publishes a dedicated VDP explosion-proof dry screw series and identifies ATEX certification in its product materials. The dry process design and optional wetted-material treatments may suit projects in which solvent handling, leakage control, and contamination risk are major design factors.
Best Suited For: Chemical production, solvent recovery, pharmaceutical processing, and oil-free vacuum applications.
Before Purchasing: Obtain the VDP model certificate and certificate schedule, permissible gases, zone designation, internal/external protection scope, temperature class, purge settings, corrosion-resistant material selection, and maintenance requirements.
4. Vacculex Vacuum Equipment
Website: https://www.vacculex.com/
Supply Model: Zhejiang-based vacuum pump and system manufacturer with a sales presence in Shanghai.
Relevant Products: VSP dry screw vacuum pumps, Roots boosters, liquid ring pumps, and multi-pump industrial vacuum systems.
Why Consider Vacculex Vacuum Equipment: Vacculex materials identify experience processing flammable and explosive gases in industrial systems. Its catalogue covers screw, Roots, and liquid ring technologies, making it a useful engineering candidate where the duty involves challenging process gases. This does not by itself establish certification for every model.
Best Suited For: Chemical, pharmaceutical, food, energy, and complex process vacuum installations.
Before Purchasing: Ask which precise pump and package configurations are approved for the relevant explosive atmosphere; review the certificates, safety controls, gas compatibility, sealing, cooling, and temperature monitoring before selection.
5. Shandong Huacheng Group
Website: https://www.huachenggroup.net/
Supply Model: China-based industrial pump and vacuum-equipment manufacturing group.
Relevant Products: Liquid ring vacuum pumps, Roots vacuum pumps, and process vacuum pumping units.
Why Consider Shandong Huacheng Group: Huacheng is relevant for industrial buyers evaluating liquid-ring and Roots-based process vacuum systems, especially where cooling and vapor handling are important. Public information reviewed here did not establish a specific explosion-proof certification for a named current model, so its suitability should be treated as subject to manufacturer confirmation.
Best Suited For: Chemical-sector wet vacuum, industrial liquid-ring duty, and engineered Roots-liquid ring configurations.
Before Purchasing: Verify whether the proposed exact model has a suitable explosion-protected motor and full assembly assessment. Require original certificates, zone/gas classification, materials, monitoring, and a documented safety concept.
6. Lvsong / Elm Vacuum
Website: https://www.lvsongglobal.com/
Supply Model: Chinese vacuum-equipment group offering a broad mix of pumps and vacuum systems.
Relevant Products: Dry screw vacuum pumps, Roots vacuum pumps, liquid ring pumps, and complete vacuum units.
Why Consider Lvsong / Elm Vacuum: The company offers equipment categories commonly used in chemical process vacuum, and third-party product listings identify anti-explosion dry-screw configurations. However, third-party listing language should not be taken as proof of full model certification.
Best Suited For: Process vacuum, OEM integration, and dry screw or Roots-based industrial systems.
Before Purchasing: Request the exact manufacturer datasheet and independent certificates for the specific offered unit; distinguish motor-only explosion protection from complete pump and system approval.
7. Guangdong Wordfik Vacuum Technology
Website: https://wordfik.en.made-in-china.com/
Supply Model: Guangdong-based vacuum-pump supplier with published dry screw product listings.
Relevant Products: DVX dry screw vacuum pumps with normal or explosion-proof motor options.
Why Consider Guangdong Wordfik Vacuum Technology: A published DVX50 listing explicitly offers a choice of explosion-proof or standard motor. This is evidence of a configurable drive option, not evidence that all wetted mechanical parts or the full pump are independently certified for flammable process gases.
Best Suited For: Buyers comparing compact oil-free dry screw equipment and special motor configurations.
Before Purchasing: Request the legal manufacturer identity, model-specific documents, explosion-proof motor certificate, full pump ignition-hazard assessment, and after-sales support before procurement.
8. Shandong Kaien Vacuum Technology
Website: https://www.cnkaien.com/
Supply Model: Shandong-based supplier appearing in Chinese industrial vacuum-pump marketplace listings.
Relevant Products: Advertised explosion-proof screw vacuum pumps and anti-corrosion Roots booster configurations.
Why Consider Shandong Kaien Vacuum Technology: Marketplace listings identify screw and Roots products positioned for explosion-proof service. This is an initial sourcing lead, not independent verification of a certified product portfolio or a dedicated company website.
Best Suited For: Early-stage supplier screening for dry screw and Roots vacuum solutions.
Before Purchasing: Independently confirm the manufacturer website, business details, datasheets, ATEX or other relevant certificates, serial/model correspondence, and test records before placing an order.
Explosion Proof Vacuum Pump Manufacturer Comparison
| Manufacturer | Relevant Vacuum Offering | Public Evidence / Verification Level | Best Fit |
|---|---|---|---|
| DV VACUUM | DVS dry screw vacuum pumps, DVB Roots vacuum pumps, DVL liquid ring vacuum pumps, and customized Roots-dry screw or liquid-ring packages. | ATEX stated for applicable product lines; confirm exact scope | Custom chemical process vacuum |
| EVP Vacuum Technology | 2BV6 explosion-proof motor liquid ring vacuum pumps, process liquid ring units, dry screw pumps with optional explosion-proof configurations, and customized vacuum systems. | Named 2BV6 explosion-proof motor variants and options | Liquid-ring and dry vacuum systems |
| Shandong Boke Vacuum Technology | VDP explosion-proof dry screw vacuum pumps, Roots vacuum pumps, liquid ring pumps, and customized vacuum systems. | VDP explosion-proof dry screw product with ATEX claim | ATEX-oriented dry screw selection |
| Vacculex Vacuum Equipment | VSP dry screw vacuum pumps, Roots boosters, liquid ring pumps, and multi-pump industrial vacuum systems. | Catalogue cites work with explosive gases; confirm certification | Complex industrial vacuum systems |
| Shandong Huacheng Group | Liquid ring vacuum pumps, Roots vacuum pumps, and process vacuum pumping units. | Explosion-proof model certification not verified | Wet process and liquid-ring duty |
| Lvsong / Elm Vacuum | Dry screw vacuum pumps, Roots vacuum pumps, liquid ring pumps, and complete vacuum units. | Third-party anti-explosion listing; confirm with manufacturer | Integrated process vacuum systems |
| Guangdong Wordfik Vacuum Technology | DVX dry screw vacuum pumps with normal or explosion-proof motor options. | Optional explosion-proof motor in listed DVX models | Compact dry screw configurations |
| Shandong Kaien Vacuum Technology | Advertised explosion-proof screw vacuum pumps and anti-corrosion Roots booster configurations. | Marketplace explosion-proof product advertisements | Preliminary supplier comparison |
How to Choose an Explosion Proof Vacuum Pump Manufacturer in China
1. Start with the hazardous-area classification. Define the applicable country/region, gas or vapor group, temperature class, and site zone or division. Clarify both the atmosphere surrounding the equipment and the atmosphere inside the pump and piping.
2. Distinguish an explosion-proof motor from an explosion-protected pump. An Ex-rated motor does not automatically make the pump safe for handling an explosive gas mixture. Ask for documented assessment of bearings, friction, rotor clearances, shaft seals, static electricity, hot surfaces, and abnormal operating conditions.
3. Match the pump principle to the process. Dry screw pumps can suit oil-free solvent or chemical duty with correctly engineered temperature and seal controls. Liquid ring pumps can be attractive for certain wet or vapor-rich conditions, but compatibility of the operating liquid and gas still matters. Roots stages require appropriate backing pumps and coordinated control.
4. Ask for the exact certificate and scope. For ATEX projects, confirm equipment group/category, inside/outside applicability, gas group, temperature class, conformity assessment, and any special conditions of use. Other destination markets may require IECEx or locally applicable hazardous-location approval.
5. Evaluate the complete package. A skid may need flame arresters where appropriate, inert purge, gas monitoring, temperature/pressure switches, grounding, interlocks, emergency shutdown, compatible electrical devices, and a defined process safety philosophy. A certificate for one component does not certify the whole installation.
6. Assess after-sales capability. Compare spare parts, maintenance training, factory testing, certificate traceability, installation support, and the supplier's responsibility for the final integrated system.
Information to Provide Before Requesting a Quote
- Installation country, applicable approval framework, and hazardous-zone or division classification
- Gas group, temperature class, and internal versus external explosive-atmosphere exposure
- Complete process gas and vapor composition, including flammable and corrosive components
- Expected normal, peak, and start-up gas flow or required pumping speed
- Normal operating pressure, inlet pressure range, and target ultimate pressure
- Maximum inlet temperature, condensable vapor load, and liquid or particle carryover
- Operating cycle, expected ambient conditions, and cooling-water availability
- Preferred dry screw, liquid ring, Roots, or complete vacuum-system configuration
- Materials, sealing, purge gas, and contamination requirements
- Power supply, control integration, installation footprint, and documentation requirements
FAQs - Explosion Proof Vacuum Pump Manufacturers in China
1. What is an explosion proof vacuum pump?
It is a pump configuration engineered to control relevant ignition hazards for a specified potentially explosive atmosphere. The exact level of protection and certification depend on its construction, process medium, installation, and applicable regulations.
2. Is an explosion-proof motor enough?
Not necessarily. The pump's non-electrical ignition risks, seals, temperatures, electrostatic hazards, accessories, and complete system design may also require assessment.
3. Are all vacuum pumps sold as ATEX pumps fully ATEX certified?
No. Some suppliers advertise an ATEX motor or a configurable version. Buyers should obtain the certificate, declaration, and documentation that match the specific ordered pump and its intended duty.
4. Which pump type is best for solvent vapor recovery?
There is no universal choice. Dry screw, liquid ring, and multi-stage systems each have advantages and limitations. Selection should account for solvent properties, condensation, flammability limits, purge strategy, materials, pressure, and recovery design.
5. Can explosion-proof vacuum pumps handle corrosive gases?
Only if the wetted materials, protective coatings, seals, and system components are compatible with the actual medium. Corrosion resistance and explosion protection are separate requirements.
6. What should an overseas buyer request before ordering?
Ask for a model-specific technical datasheet, verified protection documentation, drawings, materials and seal specifications, performance data at the duty point, factory testing plan, and scope of supply.
Which China Explosion Proof Vacuum Pump Manufacturer Should You Contact?
The best shortlist depends on the application and the strength of documentation supplied for the exact model. Buyers seeking a published explosion-proof dry screw offering can review Boke; those evaluating liquid ring pumps with listed explosion-proof motor configurations can review EVP. Vacculex and other process-vacuum manufacturers may also be relevant when engineering a specialized vacuum package, subject to configuration verification.
For industrial buyers who want factory-direct engineering and customized Roots, dry screw, or liquid-ring systems, DV VACUUM is a practical starting point. Share your vacuum duty, process gas, hazardous-area classification, and required certification with its engineering team to determine whether a suitable configuration can be supplied.
