Clean, robust dry screw vacuum pump for demanding applications
The Atlas Copco DWS range of fixed speed dry screw vacuum pumps features an innovative design with variable pitch dry screws. Engineered to deliver clean and reliable vacuum flow, the DWS series are a robust series of dry vacuum pumps. The dry screw technology offers lower maintenance costs and are used in diverse industrial applications requiring no lubricants in the pumping chamber.
At the heart of the DWS Dry Screw pump is the tapered variable pitch dry screw mechanism, quick pump-down times, high pumping speed & a high tolerance for particulates.
The DWS 200-500 series of dry screw vacuum pumps are ideally suited for:
- Lithium-ion batteries
- Automotive coating
- Freeze drying
- Industrial glass coating
- Solar cell manufacturing
- Heat treatment
- Brazing
- Thin film deposition
- Plastic extrusion
- Pharmaceuticals
- Renewable energy
Technical specifications
Unit | DWS 200 | DWS 300 | DWS 500 | ||
Performance | Peak Pumping Speed | m3h-1 / CFM | 210 / 124 | >280 / >165 | >460 / 271 |
Ultimate Pressure | mbar / Torr | <0.05 / <0.04 | <0.01 / <0.008 | <0.01 / <0.008 | |
Full Load Power |
@ ultimate pressure | kW / hp | 4.1 / 5.5 | 4.5 / 6 | 4.6 / 6.5 |
@ peak pumping load | kW / hp | 6.4 / 8.6 | 8.2 / 11 | 11 / 15 | |
Vacuum Connections |
Inlet connection | ISO63 | |||
Exhaust connection | NW40 | ISO 63 | |||
Cooling Water |
Connection | G1/2" female threads | |||
Flow | L/min-1 / Gal/min-1 | <8 / <2.1 | |||
Supply pressure (max) | bar / psig | 7 / 100 | |||
DP across pump (min) | bar / psig | 0.2 / 2.9 | |||
Temperature | oC / oF | 5-35 / 41-95 | |||
Primary cooling circuit volume (Glycol water mixture volume in case of variant with direct cooling) |
I / gal | 6 / 1.6 | NA | ||
Purge Gas | Connection | G1/4" female threads | |||
Pressure | bar / psig | 2.5-6.9 / 36-100 | |||
SSP flow | Imin-1 | <12 | |||
Gas allast flow* | Imin-1 | 0-5 | |||
Operating data |
Noise | dB(A) | <76 | ||
Operating Temperature | oC / oF | 5-40 / 41-104 | |||
Exhaust Back Pressure (Max)** | mbar / psia | 1200 / 17.4 | |||
System IP rating | IP54 |
Download our brochures
- DWS 200-500 Brochure 8.2 MB, PDF