ZDB18.5 / ZDB22 Dry Screw Vacuum Pumps
ZDB Series Dry Screw Vacuum Pump Technical Specifications
| Model | Pumping Speed (m³/h | L/s) | Ultimate Pressure (Pa | mbar) | Motor 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 | ||||
| ZDB5.5 | 270 m³/h (75 L/s) | 5.5 kW | 73 | DN65 / DN50 | 10 - 15 | |||
| ZDB7.5 | 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 |
Configuration Review for ZDB18.5 and ZDB22
Performance at Your Duty Point
Provide the gas composition, inlet temperature, target pressure, required flow, duty cycle and installation details. Request the performance curve and operating limits for the proposed model; nominal pumping speed and ultimate pressure alone do not establish process performance.
Materials and Compatibility Review
List all process substances, concentrations, condensable vapours and cleaning conditions. Request documented materials, seal and coating compatibility for the exact configuration. Dry compression alone does not establish resistance to corrosive or hazardous gases.
Seal and Purge Requirements
Ask whether the proposed configuration requires purge gas, its type, pressure and flow, and the startup and shutdown sequence. Confirm seal materials, monitoring and service instructions in the model documentation; do not assume purge equipment is included.
Installation and Service Requirements
Confirm cooling supply, motor specification, pipework, exhaust treatment, service access and maintenance instructions for the proposed pump. Oil-free compression does not mean the complete machine is maintenance-free.
Application Requirements to Review
🧪 Large-Scale Chemical & Fine API Production
For chemical or pharmaceutical processes, provide the full gas composition, condensable load and cleaning conditions. Request a compatibility and protective-equipment review before assigning a pump to the process.
🌌 Semiconductor & Microelectronics Processing
For semiconductor or electronics equipment, define the required cleanliness, gas stream, process sequence and exhaust treatment. Request qualification data for the exact pump and system configuration.
♻️ Industrial Solvent Recovery Systems
For solvent recovery, define the solvent mixture, vapour load, condensation arrangement and site requirements. Confirm materials, controls, separation and exhaust treatment as part of the complete system.
📦 Heavy-Duty Vacuum Distillation & Drying
For drying or packaging, provide the pressure profile, cycle time, vapour load and duty cycle. Confirm the proposed model and any inlet protection against the actual operating requirements.
Frequently Asked Questions
What should I confirm before selecting a ZDB dry screw vacuum pump?
Provide the gas composition, inlet temperature, target pressure, required flow, duty cycle and installation details. Request the performance curve and operating limits for the proposed model; nominal pumping speed and ultimate pressure alone do not establish process performance.
How should energy use be compared between pump designs?
Compare measured power at the same pressure, gas load, operating hours and utility conditions. Ask for the test method and configuration. A rotor design label alone does not establish a fixed energy-saving percentage.
How is chemical compatibility assessed?
List all process substances, concentrations, condensable vapours and cleaning conditions. Request documented materials, seal and coating compatibility for the exact configuration. Dry compression alone does not establish resistance to corrosive or hazardous gases.
What should be confirmed about purge gas and seals?
Ask whether the proposed configuration requires purge gas, its type, pressure and flow, and the startup and shutdown sequence. Confirm seal materials, monitoring and service instructions in the model documentation; do not assume purge equipment is included.
Ready to Upgrade Your Industrial Vacuum System?
Use the vacuum pump inquiry checklist to prepare your operating requirements. Include quantity and destination, and request the proposed configuration, available drawings and a project-specific quotation.