The 2BV liquid ring vacuum pump creates vacuum by rotating an impeller eccentrically inside a casing partially filled with sealing liquid (usually water). The rotating liquid forms a ring that compresses and expels gas. Ultimate vacuum: 0.097 MPa absolute. Max flow: 0.45–8.33 m³/min. Power: 0.81–15 kW. Inlet/outlet: 25–80 mm. It handles wet gases and vapours — the liquid ring tolerates condensable vapours that would damage dry mechanical pumps.
| Parameter | Value |
| Max Flow Rate | 0.45–8.33 m³/min |
| Ultimate Vacuum | 0.097 MPa (absolute) |
| Power | 0.81–15 kW |
| Inlet / Outlet | 25–80 mm (1–3 in) |
| Sealing Liquid | Water (standard); compatible liquids for special service |
| Temperature | Sealing water ≤30°C for rated performance |
What applications suit the 2BV liquid ring vacuum pump?
Industrial vacuum generation, vacuum filtration, vacuum impregnation, degassing of liquids, vacuum distillation, paper machine forming section, chemical and pharmaceutical vacuum processes, and food packaging vacuum — particularly where wet or condensable vapours are present in the gas stream.
2BV liquid ring vacuum pump utilizes centrifugal force generated by the rotating impeller to form a water ring within the pump body, thereby achieving gas suction and compression. When the pump operates continuously at an inlet pressure below 80 mbar, protection must be provided by connecting an anti-cavitation protection pipe. If equipped with an atmospheric ejector that can be directly mounted on the vacuum pump cylinder, suction capability up to 10 mbar can be achieved.
- In the chemical industry, it is suitable for processes such as vacuum filtration, distillation, and drying, applicable in chemical product filtration plants, chemical product processing plants, and similar facilities.
- It is available for pharmaceutical processes including vacuum distillation, drying, and pharmaceutical/laboratory vacuum applications, serving pharmaceutical plants, hospitals, and laboratories.
- Applicable for vacuum packaging, vacuum sterilization, and liquid degassing in food processing at dairy plants and food processing facilities.
- This pump is also widely used in steel, paper, plastics, rubber, wood processing, and soil remediation industries.
- It is equipped with a cavitation protection port. When operating near ultimate vacuum conditions, the cavitation protection port opens (or connects to a separator) to eliminate abnormal pump noise and protect the pump body.
- This pump features fully PTFE flexible sealing components, significantly extending vacuum pump lifespan under harsh operating conditions.
- Unique discharge port design prevents overpressure on the pump body, ensuring optimal efficiency within the operating range.
- Motor utilizes YE2 series products with IP54 or IP55 protection rating (standard is IP44) and F-class insulation.
| Model | Max Pumping Speed (m³/h) | Power (kW) | Rpm (r/min) | dB (A) | Weight (kg) |
| 2BV2 060 | 27 | 0.81 | 2840 | 62 | 31 |
| 2BV2 061 | 52 | 1.45 | 2840 | 65 | 35 |
| 2BV2 070 | 80 | 2.35 | 2860 | 66 | 56 |
| 2BV2 071 | 110 | 3.85 | 2880 | 72 | 65 |
| 2BV2 060-Ex | 27 | 1.1 | 2840 | 62 | 39 |
| 2BV2 061-Ex | 52 | 1.5 | 2840 | 65 | 45 |
| 2BV2 070-Ex | 80 | 3 | 2860 | 66 | 66 |
| 2BV2 071-Ex | 110 | 4 | 2880 | 72 | 77 |
| 2BV5 110 | 165 | 4 | 1440 | 63 | 103 |
| 2BV5 111 | 230 | 5.5 | 1440 | 68 | 117 |
| 2BV5 121 | 280 | 7.5 | 1440 | 69 | 149 |
| 2BV5 131 | 400 | 11 | 1460 | 73 | 205 |
| 2BV5 161 | 500 | 15 | 970 | 74 | 331 |
| 2BV5 110 | 165 | 4 | 1440 | 63 | 153 |
| 2BV5 111 | 230 | 5.5 | 1440 | 68 | 208 |
| 2BV5 121 | 280 | 7.5 | 1440 | 69 | 240 |
| 2BV5 131 | 400 | 11 | 1460 | 73 | 320 |
| 2BV5 161 | 500 | 15 | 970 | 74 | 446 |
⬆ Scroll for all 18 published models. Liquid-ring vacuum pump models (IP54 & IP55 versions). Max pumping speed at suction pressure of 1013 mbar.
What is a liquid ring vacuum pump used for?
Liquid ring vacuum pumps are commonly used for wet gas extraction, vapor handling and industrial vacuum duties where moisture or condensable gases are present.
What information is needed to size a vacuum pump?
Provide required vacuum level, gas type, gas flow, inlet temperature, vapor load and available utilities or sealing-liquid conditions.
What is the 2BV series?
2BV is a liquid ring vacuum pump series used for industrial vacuum generation and wet-gas service.
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