Degassing removes dissolved or entrained gas from a material using the pressure conditions and process arrangement appropriate to that material. A resin batch, a solvent-containing liquid and a continuous industrial process can create very different vacuum demands. Begin with the medium, gas-release behavior, temperature and required cycle rather than selecting a pump by nominal capacity alone.
The ten companies below were selected from the supplied keyword directory for their pump technologies, application information or system capabilities. The list includes both compact laboratory and industrial process candidates. Its order is a practical shortlist, not a market-share ranking; the exact model must be qualified for the actual degassing duty.
Quick takeaway: Contact DV Vacuum for an industrial package inquiry. Compare Busch and other process suppliers for larger duties, and review KNF or Welch where laboratory pressure requirements and chemical compatibility suit their models. Specify the pressure and performance needed at the material, not only at the pump inlet.
- DV Vacuum
- Busch Vacuum Solutions
- KNF
- Welch Vacuum
- Edwards Vacuum
- Leybold
- ULVAC
- Elmo Rietschle
- Airtech Vacuum
- Gast Manufacturing
Top 10 Degassing Vacuum Pump Manufacturers: Quick Comparison
| Company | Published Product Focus | Best-Fit Starting Point |
|---|---|---|
| DV Vacuum | Roots, dry screw and liquid ring pumps; oil rotary vane options; customized industrial vacuum systems | Industrial degassing requiring a configured process vacuum package |
| Busch Vacuum Solutions | Rotary vane, dry screw and claw technologies; vacuum boosters and engineered systems | Industrial or equipment degassing across several pump technologies |
| KNF | Diaphragm gas pumps and laboratory vacuum systems | Laboratory and compact liquid degassing within diaphragm pump limits |
| Welch Vacuum | Rotary vane, diaphragm and piston pumps; vacuum controllers | Laboratory degassing and vacuum desiccation |
| Edwards Vacuum | Dry pump technologies, rotary vane pumps and integrated vacuum equipment | Process or research duties requiring a documented pumping configuration |
| Leybold | Dry and oil-sealed vacuum pumps; boosters, components and customized systems | Industrial or research degassing with system-level selection |
| ULVAC | Oil-sealed rotary vane and dry vacuum pumps; vacuum components and systems | Equipment builders and research users comparing vacuum components |
| Elmo Rietschle | Claw, screw, rotary vane and liquid ring pumps; vacuum system solutions | Industrial degassing using dry or wet process technologies |
| Airtech Vacuum | Rotary vane, claw, liquid ring and piston pumps; boosters and custom systems | OEM degassing equipment needing a custom assembly |
| Gast Manufacturing | Compact vacuum pumps, pneumatic equipment and customized configurations | Compact OEM degassing where the pressure requirement fits |
1. DV Vacuum
Website: https://www.dvvacuum.com/
Core Technologies: Roots, dry screw and liquid ring pumps; oil rotary vane options; customized industrial vacuum systems
Best Fit: Industrial degassing requiring a configured process vacuum package
Company Overview: DV Vacuum publishes industrial pump technologies and integrated vacuum packages selected around gas medium, pressure, pumping speed and utility conditions. Its materials describe in-house manufacturing for core industrial series and application engineering for chemical, pharmaceutical and other process duties. The published process applications include degassing, while its wider technologies allow a comparison based on vapor and gas conditions.
Buying Tips: Provide material composition, temperature, gas load and batch cycle. Request a pump-train proposal, pressure-control approach, separation requirements and complete test basis.
2. Busch Vacuum Solutions
Website: https://www.buschvacuum.com/
Core Technologies: Rotary vane, dry screw and claw technologies; vacuum boosters and engineered systems
Best Fit: Industrial or equipment degassing across several pump technologies
Company Overview: Busch publishes a broad vacuum pump and system portfolio with application information spanning process manufacturing, laboratories and healthcare. Buyers can use that range to compare technologies against the actual gas and pressure duty, then define the local engineering and service scope in the quotation. The supplied application navigation explicitly includes degassing, providing a useful starting point for a model-specific inquiry.
Buying Tips: Ask for a technology recommendation based on the material and pressure profile. Confirm vapor handling, contamination limits, controls and the scope of process accessories.
3. KNF
Website: https://www.knf.com/
Core Technologies: Diaphragm gas pumps and laboratory vacuum systems
Best Fit: Laboratory and compact liquid degassing within diaphragm pump limits
Company Overview: KNF specializes in diaphragm pumps and systems for gas and liquid handling. Its supplied materials describe development and manufacturing for laboratory, medical technology and industrial equipment markets. The relevant choice is a specific vacuum model with verified pressure performance and wetted-material compatibility. Its diaphragm specialization is relevant when clean gas handling and chemical-resistant materials matter, provided the model reaches the required pressure. See KNF diaphragm pump information.
Buying Tips: State the required absolute pressure and flow. Review wetted materials, solvent compatibility, condensation risk and control options; confirm whether the proposed model can meet the degassing endpoint.
4. Welch Vacuum
Website: https://www.welchvacuum.com/
Core Technologies: Rotary vane, diaphragm and piston pumps; vacuum controllers
Best Fit: Laboratory degassing and vacuum desiccation
Company Overview: Welch publishes laboratory and industrial pumps across rotary vane, diaphragm and piston technologies, together with vacuum controllers. Its supplied application information includes degassing, drying and freeze-dryer workflows. Buyers should connect those application references to a named model and its permitted process conditions. The supplied materials list degassing and desiccator applications alongside several laboratory pump mechanisms.
Buying Tips: Describe the sample and cycle and compare diaphragm or rotary vane options. Request a current datasheet, inlet protection and a controller where the pressure needs repeatable regulation.
5. Edwards Vacuum
Website: https://www.edwardsvacuum.com/
Core Technologies: Dry pump technologies, rotary vane pumps and integrated vacuum equipment
Best Fit: Process or research duties requiring a documented pumping configuration
Company Overview: Edwards supplies vacuum equipment for industry and research, supported by product documentation and application engineering. Its portfolio provides options for comparing oil-sealed and dry pumping arrangements. The final specification should identify the pump series, utility needs and scope of application review rather than rely on brand breadth alone. Its range supports an application review where capacity, pressure and contamination concerns influence the choice between dry and oil-sealed pumping.
Buying Tips: Provide gas species and release rate over the cycle. Request pressure-dependent performance, permissible medium and utility requirements, with a defined control and protection scope.
6. Leybold
Website: https://www.leybold.com/
Core Technologies: Dry and oil-sealed vacuum pumps; boosters, components and customized systems
Best Fit: Industrial or research degassing with system-level selection
Company Overview: Leybold publishes vacuum pumps, accessories and standardized or customized vacuum systems. Its materials also identify dry multistage Roots technology and tools for evaluating combinations of pumps and chambers. This supports a technical comparison focused on pressure-dependent performance and the complete system boundary. System engineering and pump combinations can be useful when a chamber needs rapid evacuation followed by sustained process throughput.
Buying Tips: Request a chamber-based sizing review. Include inlet conductance, leakage, gas release and temperature, and define instruments, valves and performance acceptance conditions.
7. ULVAC
Website: https://www.ulvac.com/
Core Technologies: Oil-sealed rotary vane and dry vacuum pumps; vacuum components and systems
Best Fit: Equipment builders and research users comparing vacuum components
Company Overview: ULVAC supplies vacuum pumps, components and process equipment for manufacturing and research. Official product categories include rotary vane and small dry pump technologies. Specify the regional supplier, actual manufacturer and offered model because the wider group portfolio does not establish the configuration of a particular quotation. The pump and component portfolio supports a degassing equipment inquiry, with process suitability to be established for a named model.
Buying Tips: Identify the required pump mechanism and ask for compatibility data and a curve. Confirm component manufacturers, exhaust provisions and the regional service route.
8. Elmo Rietschle
Website: https://www.elmorietschle.com/
Core Technologies: Claw, screw, rotary vane and liquid ring pumps; vacuum system solutions
Best Fit: Industrial degassing using dry or wet process technologies
Company Overview: Elmo Rietschle publishes industrial vacuum technologies and system solutions, with service information covering installation, maintenance and parts. Its portfolio offers several mechanisms to compare against the medium and pressure requirements. Confirm whether the proposal is for an individual pump, a configured skid or a complete site installation. The published screw, claw and liquid ring options need to be assessed against the actual medium and pressure rather than treated as interchangeable.
Buying Tips: Request a justified technology comparison. For a liquid ring offer, define the liquid circuit; for a dry offer, review thermal control, seals and process protection.
9. Airtech Vacuum
Website: https://airtechusa.com/
Core Technologies: Rotary vane, claw, liquid ring and piston pumps; boosters and custom systems
Best Fit: OEM degassing equipment needing a custom assembly
Company Overview: Airtech publishes several gas-moving and vacuum technologies and describes custom engineering for complete systems. Its materials identify vacuum and compressed-air packages and medical and dental markets. A technical inquiry should establish the model, process limits and equipment scope delivered for the specific application. Its custom systems capability is relevant to integrating a pump, chamber interfaces and controls, with capacity and pressure confirmed in the offer.
Buying Tips: Provide equipment drawings and gas conditions. Agree on mounting, inlet separation, pressure regulation, exhaust treatment and a sample or package acceptance test.
10. Gast Manufacturing
Website: https://www.gastmfg.com/
Core Technologies: Compact vacuum pumps, pneumatic equipment and customized configurations
Best Fit: Compact OEM degassing where the pressure requirement fits
Company Overview: Gast publishes vacuum pumps and pneumatic equipment and describes manufacturing and application support for standard or custom configurations. Its compact equipment can be relevant to OEM or laboratory duties where the operating pressure and gas conditions fit. Confirm performance and suitability for the exact model rather than assuming deep-vacuum capability. It is an additional candidate for compact vacuum duties; deeper degassing targets may fall outside a proposed model's achievable pressure.
Buying Tips: Ask for the model's working-pressure curve and medium limits. Confirm oil-free requirements, duty cycle and controls, and reject an underspecified offer that cannot meet the material's pressure target.
Degassing Duties: Match the Process to the Pump
| Configuration | Application Starting Point | What to Verify |
|---|---|---|
| Laboratory liquid | Small volumes and controlled solvent or aqueous workflows | Required pressure, wetted materials, vapor and regulation |
| Resin or casting material | Batch removal of entrained gas and foaming control | Chamber volume, rise in foam, cycle and inlet protection |
| Industrial process | Continuous or batch gas release under production conditions | Gas load, temperature, separation and operating hours |
| Integrated equipment | Pump supplied with chamber interfaces and control | Scope, pressure measurement, installation and acceptance |
How to Choose Degassing Vacuum Pump Manufacturers
1. Define the Material and Endpoint
Identify the material, composition, viscosity, temperature and desired result. State how the process determines completion, whether by time, pressure stability or a product criterion. A general description such as resin degassing does not provide enough data to select the pump.
2. Describe the Gas Load Through the Cycle
Provide chamber volume, evacuation time and the gas or vapor released during operation. Include expected foaming and possible liquid carryover. Ask for a curve and sizing basis that consider connection losses and the changing load rather than only a catalog displacement.
3. Review Protection and Compatibility
Discuss traps, separators, condensers and lubricant or seal compatibility as applicable. Define the exhaust destination and any required treatment. Ask the supplier to identify the permitted medium and procedures for cleaning or recovering from contamination.
4. Specify Pressure Control and Integration
Some duties need gradual evacuation or stable pressure to manage foaming and product behavior. Request an explained control approach, measurement location and valve scope. Define which party supplies the chamber, instrumentation and machine interfaces.
5. Agree on Test and Support
Use the actual process criteria to define a trial or acceptance plan. Confirm model identity, spare parts, maintenance intervals and service arrangements. If the medium cannot be replicated at the factory, identify what the factory test demonstrates and what must be verified on site.
What Affects the Cost of Degassing Vacuum Pump Equipment?
Compare the same operating duty and delivered scope across offers. Purchase price should be assessed together with the accessories, utilities, documentation and service required for the actual installation. Ask each supplier to identify its assumptions and the work assigned to other parties.
- Pump technology, capacity and required working pressure
- Chemical-compatible materials, seals and lubricant
- Traps, separators, condensers and exhaust handling
- Pressure regulation, gauges and equipment interfaces
- Process trials, consumables, maintenance and downtime
Request a written configuration, a performance basis and a maintenance plan. These establish a fair quotation comparison and a practical reference for accepting the delivered equipment.
FAQs – Degassing Vacuum Pump Manufacturers
Q1: Does a deeper vacuum always improve degassing?
The required pressure depends on the material and process objective. Excessive evacuation can increase boiling or foaming in some media. Request an application review and controlled process conditions rather than assuming the lowest ultimate pressure is best.
Q2: Can one pump serve both resin and solvent degassing?
Possibly, but suitability must be checked for each medium, temperature and vapor load. Protection and material requirements may differ. Ask for a documented operating envelope for both duties.
Q3: Is a diaphragm pump suitable?
It may suit laboratory and compact duties when its pressure, flow and wetted materials meet the process. Confirm the actual model; not every diaphragm design reaches every degassing target.
Q4: What should a quote include?
Request an identified pump, performance curve, pressure-control scope, protection, utilities and test basis. State the chamber and material conditions that the proposal is expected to meet.
Q5: How can foaming affect selection?
Foam can change the required evacuation procedure and create carryover risk. Describe its behavior and ask about pressure ramping, separation and sufficient chamber space as part of the equipment design.
Q6: Why include DV Vacuum?
DV Vacuum publishes degassing among its industrial applications and offers several process technologies. It is a relevant engineering contact, with the exact model and complete package scope to be established in the offer.
Which Supplier Fits Your Degassing Vacuum Pump Project?
For an industrial degassing package, include DV Vacuum and the relevant process suppliers in an initial engineering comparison. For laboratory work, compare KNF, Welch and other candidates against the actual pressure and chemical requirements. Select the offer that explains the material-specific duty and documents protection, control and support.
Send every shortlisted supplier the same process and installation information. Obtain an identifiable model, supporting technical data, scope of supply and service plan before approving an order.