Are you looking for an oil free vacuum pump manufacturer for chemical processing, pharmaceutical production, electronics, semiconductor manufacturing, battery production, food packaging, laboratory work, or general industrial vacuum?
Oil-free vacuum is not a single pump technology. Industrial users may require dry screw pumps for solvent, vapor, and process duties; OEM equipment builders may prefer dry claw or oil-less rotary vane pumps; while laboratories and analytical systems often use dry scroll, diaphragm, or multi-stage Roots pumps. These technologies differ significantly in pumping speed, ultimate pressure, contamination tolerance, maintenance requirements, and process compatibility.
For this reason, buyers should first define the required duty before comparing manufacturers. A small laboratory diaphragm pump cannot replace an industrial dry screw package, while a large process pump may be unnecessary for a clean analytical instrument.
The following 10 manufacturers were selected because they offer established oil-free or dry vacuum pump technologies for different purchasing requirements. The numbering is used to organize the comparison and should not be interpreted as a universal performance ranking across different pump technologies.
Industrial Dry Screw & Process Vacuum: DV VACUUM, Atlas Copco, Leybold, Busch Vacuum Solutions, and EVP Vacuum.
Clean, Scientific & High-Tech Dry Vacuum: Edwards Vacuum, Pfeiffer Vacuum, and Kashiyama Industries.
General Industrial & Laboratory Oil-Free Vacuum: Becker Pumps and Rocker Scientific.
Quick Navigation
- DV VACUUM
- Atlas Copco
- Leybold
- Edwards Vacuum
- Busch Vacuum Solutions
- Pfeiffer Vacuum
- Becker Pumps
- EVP Vacuum
- Kashiyama Industries
- Rocker Scientific
1. DV VACUUM
Website: https://www.dvvacuum.com/
Supply Model: China-based industrial vacuum pump manufacturer supplying standalone pumps and customized vacuum systems.
Core Products / Technologies: Dry screw vacuum pumps, Roots vacuum pumps, Roots-dry screw combinations, liquid ring vacuum pumps, oil rotary vane pumps, and customized industrial vacuum systems.
Why Consider DV VACUUM: DV VACUUM is particularly relevant when the requirement is an industrial oil-free process vacuum system rather than a small laboratory pump. Its dry screw pumps can be configured as standalone units or combined with Roots boosters and other equipment according to the required operating pressure and pumping capacity.
For chemical and process applications, the final configuration should be selected according to gas composition, condensable vapor load, operating temperature, corrosion risk, cooling conditions, sealing requirements, and system controls rather than pumping speed alone.
Best Suited For: Chemical processing, pharmaceuticals, vacuum drying, distillation, solvent recovery, new energy production, electronics manufacturing, industrial degassing, and buyers seeking factory-direct customized vacuum systems.
Before Purchasing: Confirm whether you need a standalone dry screw pump or a complete Roots-dry screw system. Provide normal operating pressure, target ultimate pressure, required pumping speed, gas composition, condensable load, inlet temperature, corrosion risk, cooling conditions, voltage/frequency, installation space, control requirements, and hazardous-area requirements where applicable. Materials, coatings, seals, purge configuration, and certification scope should be confirmed for the specific process.
2. Atlas Copco
Website: https://www.atlascopco.com/
Supply Model: Global industrial vacuum technology manufacturer with an extensive service and support network.
Core Products / Technologies: DWS dry screw vacuum pumps, DZS dry claw pumps, DSS dry scroll pumps, variable-speed dry vacuum systems, boosters, controls, and central vacuum solutions.
Why Consider Atlas Copco: Atlas Copco offers several different dry technologies instead of relying on one oil-free pumping principle. Its DWS dry screw range is designed for demanding industrial applications and uses dry screw compression without lubricants in the pumping chamber, while dry claw and scroll products serve different flow and vacuum requirements.
This broad portfolio is useful for buyers that want to compare dry screw, claw, and scroll technologies within the same supplier.
Best Suited For: Lithium-ion battery production, pharmaceuticals, freeze drying, coating, heat treatment, plastics, electronics manufacturing, packaging, and general industrial vacuum.
Before Purchasing: Determine whether the application requires the DWS dry screw platform or a lower-flow dry claw or scroll solution. For process applications, confirm contaminant tolerance, purge configuration, cooling method, operating pressure, required controls, hazardous-process configuration, accessories, and local service support.
3. Leybold
Website: https://www.leybold.com/
Supply Model: Global vacuum technology manufacturer serving industrial, scientific, research, food, coating, and high-vacuum applications.
Core Products / Technologies: DRYVAC, DURADRY, LEYVAC, NOVADRY, SCREWLINE, and VARODRY dry screw pumps; CLAWVAC dry claw pumps; Roots boosters; and integrated vacuum systems.
Why Consider Leybold: Leybold has one of the broader dry industrial vacuum portfolios in this comparison. Different screw platforms address clean industrial duty, food processing, harsh process applications, and oil-free production environments, while CLAWVAC provides a dry claw option for applications that do not require deep process vacuum.
Its broad selection makes Leybold relevant for buyers who need to choose between several established dry technologies while maintaining a standardized global vacuum platform.
Best Suited For: Industrial process vacuum, food processing, packaging, coating, heat treatment, analytical equipment, research systems, clean manufacturing, and central vacuum installations.
Before Purchasing: Identify the correct Leybold product family before requesting a quote. DRYVAC, VARODRY, NOVADRY, SCREWLINE, and CLAWVAC are designed for different pressure ranges and gas loads. Confirm process gas, vapor and particle load, pumping speed, pressure range, cooling arrangement, purge requirements, required booster, and certification requirements.
4. Edwards Vacuum
Website: https://www.edwardsvacuum.com/
Supply Model: Global vacuum technology manufacturer with a particularly strong presence in semiconductor, scientific, analytical, and high-technology vacuum markets.
Core Products / Technologies: nXDS, XDS, and mXDS dry scroll pumps; nXRi dry multi-stage Roots pumps; dry process pumps; vacuum boosters; and high-vacuum systems.
Why Consider Edwards Vacuum: Edwards is particularly strong where clean, lubricant-free vacuum is required. The nXDS dry scroll range provides oil-free pumping for scientific and analytical applications, while the nXRi uses a compact multi-stage Roots mechanism and is completely oil-free within the vacuum chamber.
This makes Edwards especially relevant when contamination control, low noise, compact integration, and backing of turbomolecular pumps are important.
Best Suited For: Mass spectrometry, electron microscopy, analytical instruments, research laboratories, leak detection, turbomolecular pump backing, semiconductor equipment, and clean high-tech manufacturing.
Before Purchasing: Determine whether the required duty is better served by a dry scroll or multi-stage Roots pump. Confirm pumping speed, ultimate pressure, vapor load, corrosion exposure, gas ballast requirements, cooling method, interface requirements, and whether a corrosion-resistant variant is needed.
5. Busch Vacuum Solutions
Website: https://www.buschvacuum.com/
Supply Model: Global vacuum pump and system manufacturer with industrial process engineering and local service support.
Core Products / Technologies: COBRA dry screw vacuum pumps, MINK dry claw pumps, vacuum boosters, centralized vacuum systems, and engineered vacuum packages.
Why Consider Busch Vacuum Solutions: Busch's COBRA family covers multiple industrial dry screw duties, from packaging to demanding chemical, distillation, solvent recovery, drying, battery, and coating processes. Different sealing, cooling, coating, and hazardous-area configurations can be specified according to the application.
Busch is particularly useful where the buyer requires a mature process-vacuum supplier capable of providing both the pump and the surrounding engineered vacuum system.
Best Suited For: Chemical processing, distillation, solvent recovery, vacuum drying, battery manufacturing, food packaging, coating, heat treatment, and high-capacity industrial vacuum.
Before Purchasing: Select the COBRA family according to the actual process rather than maximum pumping speed. Confirm gas composition, solvent and condensable load, required coating or sealing configuration, air- or water-cooling requirement, ATEX requirements where applicable, purge gas, booster requirement, and system responsibility.
6. Pfeiffer Vacuum
Website: https://www.pfeiffer-vacuum.com/
Supply Model: Global vacuum technology manufacturer serving research, analytical, semiconductor, industrial, and high-vacuum markets.
Core Products / Technologies: HiScroll oil-free dry scroll pumps, ACP dry multi-stage Roots pumps, Roots boosters, turbomolecular pumps, measurement equipment, leak detection, chambers, and complete vacuum systems.
Why Consider Pfeiffer Vacuum: Pfeiffer is particularly relevant to clean and contamination-sensitive applications. The HiScroll range uses completely dry, oil-free scroll technology and is designed for low noise, low vibration, compact integration, and medium-vacuum operation.
Its broader portfolio also allows buyers to integrate the dry backing pump with turbomolecular pumps, measurement equipment, and complete high-vacuum systems from one supplier.
Best Suited For: Laboratories, analytical systems, mass spectrometry, research, semiconductor equipment, coating, leak detection, and high-vacuum systems requiring clean backing pumps.
Before Purchasing: Confirm whether scroll or another dry pump technology is appropriate for the required gas load. For HiScroll applications, review pumping speed, ultimate pressure, vapor handling, required gas ballast, process compatibility, accessories, communication interface, and maintenance requirements.
7. Becker Pumps
Website: https://beckerpumps.com/
Supply Model: Vacuum and pressure pump manufacturer specializing in dry-running industrial pumps and centralized vacuum solutions.
Core Products / Technologies: VT, KVT, and VTLF oil-less rotary vane pumps, BCV and VARIAIR BCV dry claw pumps, regenerative blowers, and central vacuum systems.
Why Consider Becker Pumps: Becker is a useful alternative to dry screw suppliers when the required duty is medium vacuum, machine suction, holding, conveying, packaging, printing, or central vacuum rather than deep chemical process vacuum.
Its oil-less rotary vane pumps use self-lubricating graphite composite vanes and operate without oil changes, while its BCV claw pumps use dry, non-contact compression.
Best Suited For: Printing, packaging, CNC and holding applications, pneumatic conveying, medical equipment, OEM machines, pick-and-place systems, and medium-vacuum central systems.
Before Purchasing: First determine whether a dry vane or claw pump better matches the duty. Confirm required open flow, maximum vacuum, continuous-duty conditions, dust filtration, inlet temperature, variable-speed requirement, expected vane maintenance where applicable, and whether the application requires deeper process vacuum than these technologies can provide.
8. EVP Vacuum
Website: https://www.evpvacuum.com/
Supply Model: China-based industrial vacuum pump and system supplier providing a broad range of standalone and packaged vacuum equipment.
Core Products / Technologies: EDSE and B-EDSE/B-EDSV dry screw vacuum pumps, EDS dry scroll pumps, Roots boosters, liquid ring pumps, and complete industrial vacuum systems.
Why Consider EVP Vacuum: EVP covers both industrial dry screw pumping and smaller dry scroll technologies. This gives buyers a choice between high-capacity oil-free process vacuum and lower-capacity clean vacuum within the same supplier portfolio.
Its dry screw range is particularly relevant for buyers sourcing industrial oil-free equipment from China and comparing standalone pumps with Roots-dry screw combinations.
Best Suited For: Chemical processing, pharmaceutical production, coating, vacuum drying, solvent-related process vacuum, industrial systems, and clean dry-vacuum applications.
Before Purchasing: Confirm whether the requirement calls for an EDSE dry screw pump or EDS dry scroll pump. For industrial processes, provide actual operating pressure, vapor load, gas composition, corrosion conditions, temperature, required pumping speed, cooling conditions, Roots booster requirements, and control scope.
9. Kashiyama Industries
Website: https://www.kashiyama.com/
Supply Model: Japanese dry vacuum pump manufacturer with a strong focus on semiconductor, FPD, high-tech manufacturing, research, and clean vacuum applications.
Core Products / Technologies: NeoDry air-cooled multi-stage Roots dry pumps, SDE dry screw pumps, MU compact dry pumps, SDL dry pumps, Roots boosters, and vacuum exhaust equipment.
Why Consider Kashiyama Industries: Kashiyama is the actual manufacturer behind the NeoDry pumps that are distributed and serviced by companies such as SynSysCo. Its NeoDry series uses two non-contact multi-stage Roots rotors and keeps oil out of the pumping chamber, providing clean exhaust without oil smoke or chamber contamination.
The air-cooled NeoDry range is particularly useful where users want to replace small oil-sealed rotary vane or scroll pumps while maintaining clean, compact operation.
Best Suited For: Semiconductor and FPD production, R&D, vacuum drying, electrode drying, degassing, deposition, electron microscopy, mass spectrometry, freeze drying, evaporators, and turbomolecular pump backing.
Before Purchasing: Confirm whether NeoDry is suitable or whether the application requires one of Kashiyama's larger or harsher-duty dry pump platforms. Review pumping speed, moisture and solvent load, ultimate pressure, gas ballast, air- versus water-cooling, process gas compatibility, exhaust treatment, and semiconductor process requirements.
10. Rocker Scientific
Website: https://www.rocker.com.tw/
Supply Model: Laboratory pump and filtration equipment manufacturer focused on compact scientific vacuum applications.
Core Products / Technologies: Oil-free diaphragm vacuum pumps, PTFE-coated chemical-resistant diaphragm pumps, vacuum filtration equipment, compressors, and laboratory vacuum accessories.
Why Consider Rocker Scientific: Rocker should not be compared directly with industrial dry screw manufacturers. Its strength is compact laboratory vacuum where users need oil-free operation, easy maintenance, filtration capability, or moderate chemical resistance.
For example, Rocker's 900C/910C diaphragm pumps use PTFE-coated pump heads and diaphragms with FKM valves and require no lubricant, making them oil-mist-free and suitable for selected laboratory chemical-vapor applications.
Best Suited For: Vacuum filtration, microbiology, water testing, laboratory evaporation, concentration, drying, defoaming, solvent purification, and general bench-top vacuum work.
Before Purchasing: Check the required flow and ultimate vacuum first. Confirm whether process vapors are compatible with the diaphragm, PTFE coating, valves, and tubing. Laboratory diaphragm pumps should not be selected as substitutes for continuous high-flow industrial process vacuum systems.
Oil Free Vacuum Pump Manufacturer Comparison
| Manufacturer | Main Oil-Free Technology | Best Fit | Key Purchasing Question |
|---|---|---|---|
| DV VACUUM | Dry screw / Roots-dry screw | Industrial process vacuum | Standalone pump or complete process system? |
| Atlas Copco | Dry screw / claw / scroll | Industrial and factory vacuum | Which dry technology fits the duty? |
| Leybold | Dry screw / claw | Process, food and industrial vacuum | Which product family matches the pressure and gas load? |
| Edwards Vacuum | Dry scroll / multi-stage Roots | Scientific, analytical and high-tech | Clean scroll or higher-capacity multi-stage Roots? |
| Busch Vacuum Solutions | Dry screw / claw | Chemical and industrial process vacuum | What sealing, coating and process configuration is required? |
| Pfeiffer Vacuum | Dry scroll / multi-stage Roots | Clean and high-vacuum systems | What backing-pump and high-vacuum combination is required? |
| Becker Pumps | Oil-less rotary vane / claw | OEM and medium industrial vacuum | Does the application need vane or claw technology? |
| EVP Vacuum | Dry screw / dry scroll | Industrial and China-based supply | Dry screw process pump or smaller clean scroll pump? |
| Kashiyama Industries | Multi-stage Roots / dry screw | Semiconductor and clean dry vacuum | NeoDry or a heavier-duty dry pump platform? |
| Rocker Scientific | Oil-free diaphragm | Laboratory vacuum | Are flow, vacuum level and chemical compatibility sufficient? |
How to Choose an Oil Free Vacuum Pump Manufacturer
1. Start with the pump technology, not the brand.
Dry screw, claw, scroll, multi-stage Roots, rotary vane, and diaphragm pumps serve different pressure, capacity, and contamination requirements. Selecting the wrong technology cannot be corrected simply by choosing a larger motor.
2. Define what "oil free" means for your process.
Many dry vacuum pumps keep lubricating oil isolated from the pumping chamber while bearings or gearboxes may still use lubrication. If the process has strict contamination requirements, confirm the actual pumping-chamber design and potential contamination paths rather than relying only on the phrase "oil free."
3. Match the pump to the process gas.
Clean air, water vapor, organic solvents, corrosive gases, powders, particles, and polymerizing materials place very different demands on a vacuum pump. Materials, coatings, purge gas, seals, temperature management, condensers, traps, and exhaust treatment may all affect the final configuration.
4. Compare capacity at the real operating pressure.
Maximum pumping speed and ultimate pressure alone are not enough. Request performance curves and compare pumping capacity, motor load, temperature, and stability at the pressure where the process actually operates.
5. Separate laboratory and industrial requirements.
A compact diaphragm or scroll pump may be ideal for filtration, analytical equipment, and laboratory evaporation but unsuitable for a chemical reactor or industrial dryer. Likewise, a large dry screw system may be unnecessary for a small laboratory chamber.
What Information Should You Send for a Quote?
- Required pumping speed or process gas flow
- Normal operating pressure
- Starting pressure
- Target ultimate pressure
- Gas composition
- Condensable vapor or solvent load
- Gas inlet temperature
- Dust or particle load
- Corrosion risk
- Operating hours and duty cycle
- Required contamination level
- Cooling-water availability
- Voltage and frequency
- Installation space
- Hazardous-area classification, if applicable
- Standalone pump or complete vacuum system
- Required controls and communication interface
- Required documentation, inspection, and certification
FAQs - Oil Free Vacuum Pump Manufacturers
1. What is an oil free vacuum pump?
An oil free vacuum pump creates vacuum without using oil as the sealing or compression medium inside the pumping chamber. Common technologies include dry screw, dry claw, dry scroll, multi-stage Roots, oil-less rotary vane, and diaphragm pumps.
2. Is an oil free pump completely free of lubricating oil?
Not necessarily. Some dry pumps still use lubricant in isolated bearings or gearboxes while keeping it separated from the process chamber. Buyers with strict contamination requirements should confirm the exact pump construction.
3. When should I use a dry screw vacuum pump?
Dry screw pumps are commonly considered for industrial process vacuum where high pumping capacity, oil-free compression, vapor handling, and configurable purge, cooling, or corrosion-protection options are required.
4. When is a dry claw pump more suitable?
Dry claw pumps are often appropriate for rough or medium industrial vacuum, central vacuum, packaging, pneumatic conveying, holding, and other duties where very deep vacuum is not required.
5. When should I choose a scroll or diaphragm pump?
Scroll and diaphragm pumps are widely used in laboratories, analytical equipment, research, filtration, and clean vacuum applications where compact size, low contamination, and moderate pumping capacity are more important than very high industrial flow.
6. Can oil free vacuum pumps handle solvents?
Some can, but solvent compatibility depends on pump technology, materials, seals, temperature, condensation risk, gas ballast or purge configuration, and exhaust handling. Confirm the actual solvent and concentration with the manufacturer before selection.
7. Are oil free pumps suitable for corrosive gases?
Only when the selected model and configuration are designed for the specific corrosive medium. Coatings, stainless-steel components, special seals, purge systems, temperature control, and exhaust treatment may be required.
8. Is an oil free vacuum pump always better than an oil-sealed pump?
No. Oil-free pumps can reduce process contamination and oil management, but selection should still consider required vacuum level, gas composition, capital cost, maintenance, energy use, vapor handling, and application conditions.
Which Oil Free Vacuum Pump Supplier Should You Contact?
There is no single oil-free vacuum pump technology that suits every application. Industrial chemical and process buyers should focus on suppliers with appropriate dry screw and engineered-system capability, while analytical, semiconductor, and laboratory users may be better served by dry scroll, multi-stage Roots, or diaphragm technologies.
For buyers seeking factory-direct industrial dry vacuum pumps and customized process-vacuum systems, DV VACUUM can be considered for dry screw vacuum pumps, Roots-dry screw combinations, and complete vacuum packages.
When requesting a quotation, provide the actual operating pressure, required pumping capacity, gas composition, condensable load, temperature, corrosion risk, contamination requirements, utilities, installation conditions, and whether the project requires only a pump or a complete vacuum skid. This allows the pump and supporting equipment to be selected around the real process instead of only a nominal pumping-speed target.
