5.5KW Oil free Dry screw vacuum pump

It is a dry-running vacuum pump in which two intermeshing screw rotors rotate in opposite directions without touching each other or the housing. Gas is trapped and compressed along the screw profile and discharged, with no oil, water or other sealing fluid in the process chamber — delivering deep, clean vacuum while handling vapors and particulates that would damage other pump types.

It is the preferred choice for demanding processes: chemical and pharmaceutical distillation, solvent recovery and drying, reactor evacuation, semiconductor and electronics manufacturing, PET and film production, vacuum packaging, food processing, heat treatment, vacuum metallurgy and petrochemical plants — anywhere corrosive or condensable gases meet strict vacuum requirements.

Two-stage dry screw pumps typically reach an ultimate pressure of about 0.1–0.5 mbar (10–50 Pa), covering most industrial processes. Combined with a roots booster, levels below 0.01 mbar can be achieved where required.

Our dry screw pumps cover a wide range from about 50 to 1,000 m³/h, from pilot-scale units to large industrial packages. Provide your chamber volume, process pressure, gas composition and cycle time, and we will size the optimum configuration.

Dry screw pumps eliminate oil contamination, oil changes and disposal cost, and they handle aggressive, condensable or particle-laden gases far better. They also achieve deep vacuum with a single robust machine, reducing the need for complex multi-stage oil systems.

Yes — this is its key advantage. The screw rotors are available with corrosion-resistant coatings (e.g. NiResist or PTFE-based treatments) and the design tolerates condensable vapors, so it can pump solvents, acids and other aggressive media with proper configuration. We select the rotor material and coating based on your gas analysis.

Compared with dry claw or vane pumps, screw pumps deliver deeper ultimate vacuum, higher compression ratio and better tolerance of particles and condensate, with fewer moving contact parts. They are more robust for harsh processes, at a somewhat higher cost — the right choice when reliability and process safety matter most.

Maintenance is low: no oil to change. Routine work covers periodic inspection of the rotors and housing for deposits, cleaning the inlet filters and condensate drains, and checking the cooling circuit. For fouling processes we can provide cleaning access and recommended service intervals to maximize uptime.

The pump has a closed cooling circuit — typically water-cooled, with air-cooled versions available — maintaining stable rotor clearances and performance under continuous duty. We configure the cooling type and capacity for your ambient and process conditions.

Dry screw pumps operate quietly for their size — typically 68–78 dB(A) depending on model — with enclosed versions and silencers available for noise-sensitive installations.

Yes, the screw design tolerates condensation and small amounts of liquid without damage, and an integrated condensate separator and drain protect the pump during vapor-laden processes. For processes with heavy condensation we recommend a condenser upstream and our condensate management options.

Yes. Units feature PLC control with touchscreen: start/stop, pressure and temperature monitoring, anti-coking/solvent flushing sequences, alarm management and remote communication (Modbus/Profibus or cloud) for integration with your plant control system.

Yes. We offer versions with flameproof motors and ATEX/IECEx-certified options for explosive atmospheres, configured to your zone classification. Confirm your area classification and gas group, and we will supply the compliant package with certification.

Yes. As the manufacturer, we customize voltage/frequency, rotor material and coating, cooling type, control and communication protocols, skid-mounted packages with condensers and traps, color and branding, plus OEM/ODM with your logo and documentation.

Our factory is ISO 9001 certified and pumps carry CE certification; ATEX/IECEx and other certificates are available for your market. Standard models ship within 20–40 days after order confirmation, customized or certified units 40–70 days, export-packed for sea or air freight.

We offer a 12–24 month warranty, 24/7 remote technical support with online diagnostics, installation and commissioning guidance, operator and maintenance training, and long-term spare parts and service supply — typically dispatched within 3–7 days — backed by a global service network where available.