P-02Screw Pump
Oil-free dry operation, suitable for condensable gases and clean vacuum applications
- Food
- Semiconductor

Product images are for illustration purposes only; final images will be provided by the enterprise.
P-01Liquid Ring Vacuum Pump
Liquid-ring vacuum pump designed for continuous operation in wet and dusty environments.
Use Cases
SPECIFICATION
The parameters above are for structural illustration only. Actual values shall prevail based on the manufacturer's selection catalog and the technical agreement in the contract.
| Parameter | Description / Scope |
|---|---|
| Pumping Speed | Select by operating conditions (indicative range: 0.5–120 m³/min) |
| Extreme Pressure | Approx. 33 mbar (subject to configuration) |
| Working fluid flow rate | Pump-Mounted and Liquid Temperature Configuration |
| Motor Power | Match by pumping speed and compression ratio |
| Intake diameter | DN25–DN300 (illustrative) |
| Working fluid temperature | Suggested ≤ 35 °C; adjustable with heat exchanger |
Pumping Speed
Select by operating conditions (indicated range: 0.5–120 m³/min)
Extreme Pressure
Approx. 33 mbar (subject to configuration)
Working fluid flow rate
Pump-mounted and Liquid Temperature Configuration
Motor Power
Match by pumping speed and compression ratio
Intake Diameter
DN25–DN300 (illustrative)
Working fluid temperature
Suggested ≤ 35 °C; adjustable with heat exchanger
WORKING PRINCIPLE
Working fluid is injected into the pump body, and the impeller is mounted eccentrically. As the impeller rotates, the liquid is thrown against the pump wall to form a liquid ring. A crescent-shaped cavity forms between the inner surface of the liquid ring and the impeller hub. As the impeller turns, the volume of this cavity changes periodically, enabling suction, compression, and discharge, thereby creating a stable vacuum at the inlet.
STRUCTURE
The working fluid participates in the compression process, enabling handling of gas containing moisture and fine dust while reducing the risk of fouling and blockage.
The pump body, end cover, and impeller are directly assembled; disassembly, inspection, and seal replacement require no specialized tooling.
The liquid ring provides sealing, ensuring no direct friction between the rotor and pump casing. This keeps vibration and noise levels under control.
The working fluid is recyclable and uses a heat exchanger to control temperature, enabling long-term continuous operation.
RELATED
P-02Oil-free dry operation, suitable for condensable gases and clean vacuum applications
P-03Non-contact claw-rotor vacuum pump, compact and clean design
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