Robust
- Heavy-duty two-stage construction
- No metallic contact between rotating parts
- Designed for continuous industrial operation

ZVK SERIES · TWO-STAGE LIQUID RING
A higher-capacity two-stage platform for continuous industrial vacuum duties with wet, humid or vapour-laden gases.
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| Technical specification | |||
|---|---|---|---|
| Nominal pumping speed | 635 m³/h | 755 m³/h | 865 m³/h |
| Ultimate absolute pressure | 40 mbar | 40 mbar | 40 mbar |
| Vacuum pressure | -730 mmHg | -730 mmHg | -730 mmHg |
| Motor power | 18.5 kW | 22 kW | 30 kW |
| Motor speed | 1450 rpm | 1450 rpm | 1450 rpm |
| Inlet / outlet | DN 80 | DN 80 | DN 80 |
| Service-water connection | G1″ | G1″ | G1″ |
| Cavitation valve | G1/2″ | G1/2″ | G1/2″ |
| Sound pressure level | 80 ±3 dB(A) | 80 ±3 dB(A) | 80 ±3 dB(A) |
| Dimensions (L × W × H) | 877 × 400 × 598 mm | 937 × 400 × 598 mm | 977 × 400 × 598 mm |
| Approximate weight | 225 kg | 255 kg | 275 kg |