| Model | Pumping Speed (m³/h | L/s) | Ultimate Pressure (Pa | mbar) | Power (kW) | Speed (RPM) | Noise dB(A) | Inlet / Outlet (mm) | Cooling Water (L/min) | Max Temp / Humid |
|---|---|---|---|---|---|---|---|---|
| ZDB2.2 | 126 m³/h (36 L/s) | 0.8 Pa (0.008 mbar) | 2.2 kW | 2900 / 3500 (50/60 Hz) | 72 | DN40 / DN40 | 5 - 10 | Ambient: 0 - 50 °C Max Humidity: 90% |
| ZDB3.7 | 180 m³/h (50 L/s) | 3.7 kW | 72 | DN50 / DN40 | ||||
| ZDB5.5Popular | 270 m³/h (75 L/s) | 5.5 kW | 73 | DN65 / DN50 | 10 - 15 | |||
| ZDB7.5Popular | 330 m³/h (92 L/s) | 7.5 kW | 75 | DN65 / DN50 | ||||
| ZDB11 | 450 m³/h (125 L/s) | 11 kW | 75 | DN80 / DN65 | ||||
| ZDB15 | 660 m³/h (183 L/s) | 15 kW | 75 | DN100 / DN65 | 15 - 20 | |||
| ZDB18.5 | 780 m³/h (217 L/s) | 18.5 kW | 78 | DN100 / DN80 | ||||
| ZDB22 | 960 m³/h (267 L/s) | 1.0 Pa (0.01 mbar) | 22 kW | 78 | DN100 / DN80 | |||
| ZDB30 | 1500 m³/h (417 L/s) | 30 kW | 85 | DN150 / DN100 | 30 - 40 | |||
| ZDB37 | 1860 m³/h (517 L/s) | 37 kW | 85 | DN150 / DN100 | ||||
| ZDB55 | 2880 m³/h (800 L/s) | 10.0 Pa (0.1 mbar) | 55 kW | 85 | DN200 / DN150 | 40 - 50 | ||
| ZDB75 | 4080 m³/h (1133 L/s) | 75 kW | 85 | DN200 / DN150 |
Single-piece molded variable-pitch rotors yield 16.6%–23.8% energy savings over equal-pitch designs, reducing gas discharge temperatures and power consumption.
Customizable internal wet surfaces with PTFE, PFA, Hastelloy, Molybdenum, or Nano-Ceramic coatings for handling highly corrosive acids and organic vapors.
Multi-layer sealing system combined with positive pressure Nitrogen (N2) purge ports prevents process gas corrosion and particle ingress into shaft bearings.
Rotor clearance tolerances within 0.02 mm (20 microns) ensure frictionless dry compression, deep ultimate vacuum down to 0.8 Pa, and zero oil pollution.
Handles organic solvents, vaporized acids, and moisture-heavy process streams in reaction vessels, vacuum distillation, and drying ovens without oil contamination.
Provides ultraclean, hydrocarbon-free vacuum chambers required for wafer degassing, plasma etching exhaust, and thin-film deposition lines.
Enables direct downstream condensation and clean solvent reclamation without emulsification or wastewater generation typical of water-ring pumps.
Maintains continuous pumping performance under high water vapor loads during large-scale industrial vacuum drying and vacuum packaging processes.
ZDB series dry screw vacuum pumps operate completely oil-free inside the pumping chamber, eliminating oil contamination, backstreaming, and hazardous wastewater handling. They handle heavy moisture, organic vapors, and corrosive gases while achieving deeper ultimate vacuum levels down to 0.8 Pa.
Unlike traditional constant-pitch screws, our German-designed variable-pitch rotors compress gas progressively along the shaft. This reduces internal thermal build-up and exhaust gas temperature, boosting compression efficiency by 16.6% to 23.8% while lowering power consumption.
Depending on process medium chemistry, internal wet parts and rotors can be factory-coated with PTFE, PFA, Hastelloy, Nickel, Molybdenum, or Nano-Ceramic coatings. These non-peeling protective layers resist toxic, acidic, and condensable corrosive gases.
The integrated multi-layer seal structure incorporates a pressurized N2 gas purge port at the end covers. This creates a positive pressure barrier preventing process gas or particulate ingress into the bearing housings, dramatically extending seal life.
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