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Audited Supplier Liquid ring vacuum pump is a kind of positive displacement vacuum pump, which generally uses water or other low saturated vapor pressure liquid as working fluid. Due to the structure of the liquid ring vacuum pump itself and the influence of the saturated vapor pressure of the circulating working fluid, the vacuum of the liquid ring vacuum pump is relatively rough. Generally, the ultimate pressure of the liquid ring vacuum pump is 2000~4000pa. If the air ejector is connected in series, the ultimate pressure of the liquid ring vacuum pump can reach 270~670pa. As the liquid ring vacuum pump has the advantages of simple structure, convenient manufacturing, reliable operation, simple operation and strong durability, it can pump corrosive gases, dusty gases and steam water mixed gases. Therefore, it is widely used in chemical industry, petroleum, pharmacy, food processing industry and light industry.
1. There is no metal friction surface in the pump, so it is unnecessary to lubricate the pump. The precision requirement of parts and components is not high, the structure is simple, the manufacturing is easy, the cost is low, the work is reliable, the failure is not easy to occur, and the maintenance is simple;
2. The pump has a compact structure, high speed, and is generally a direct connection structure. Therefore, the pump is small in size and light in weight. With small structure size, large exhaust volume can also be obtained, and the floor area is relatively small;
3. The water is generally used as the liquid ring, which is suitable for pumping toxic and harmful gases. Although the inhaled gas contains some water or condensable gas, it will not affect the performance of the pump;
4. Compressed gas is isothermal, that is, the temperature of gas changes little during compression. In this way, when compressing flammable and explosive gases (such as gas, natural gas, acetylene, oxygen, hydrogen, etc.), no explosion or combustion accident will occur. This feature is particularly important in the application of chemical industry.
| Spec. Model |
Pump for | Pumping speed | Ultimate Pressure (pa) | Motor power (kw) | Rotory Speed (RPM) | Weight of Pump (kg) | |
| the unit | m³/h | m³/min | |||||
| 2BW3-110 | 2BV5(6)-110 | 165 | 2.75 | 3300 | 4 | 1440 | 103/153 |
| 2BW3-111 | 2BV5(6)-111 | 230 | 3.83 | 5.5 | 1440 | 117/208 | |
| 2BW3-121 | 2BV5(6)-121 | 280 | 4.66 | 7.5 | 1440 | 149/240 | |
| 2BW3-131 | 2BV5(6)-131 | 400 | 6.66 | 11 | 1460 | 205/320 | |
| 2BW3-161 | 2BV5(6)-161 | 500 | 8.33 | 15 | 970 | 331/446 | |
| 2BW4-153 | 2BE1-153 | 600 | 10 | 18.5 | 1450 | 533 | |
| 2BW4-202 | 2BE1-202 | 760 | 12.7 | 22 | 970 | 875 | |
| 2BW4-203 | 2BE1-203 | 1120 | 18.7 | 37 | 970 | 1065 | |
| 2BW4-252 | 2BE1-252 | 1700 | 28.3 | 45 | 740 | 1695 | |
| 2BW4-253 | 2BE1-253 | 2450 | 40.8 | 75 | 740 | 2215 | |
| 2BW4-303 | 2BE1-303 | 400 | 66.7 | 110 | 740 | 3200 | |
| 2BW4-305 | 2BE1-305 | 4650 | 77.5 | 132 | 740 | 3800 | |
| 2BW4-353 | 2BE1-353 | 5300 | 88.3 | 160 | 590 | 4750 | |
Q: What information should I offer for an inquiry?
A: You can inquire based on the model directly, but it is always recommended that you contact us so that we can help you to check if the pump is the most appropriate for your application.
Q: Can you make a customized vacuum pump?
A: Yes, we can do some special designs to meet customer applications. Such as customized sealing systems, speical surface treatment can be applied for roots vacuum pump and screw vacuum pump. Please contact us if you have special requirements.
Q: I have problems with our vacuum pumps or vacuum systems, can you offer some help?
A: We have application and design engineers with more than 30 years of experience in vacuum applications in different industries and help a lot of customers resolve their problems, such as leakage issues, energy-saving solutions, more environment-friendly vacuum systems, etc. Please contact us and we'll be very happy if we can offer any help to your vacuum system.
Q: Can you design and make customized vacuum systems?
A: Yes, we are good for this.
Q: What is your MOQ?
A: 1 piece or 1 set.
Q: How about your delivery time?
A: 5-10 working days for the standard vacuum pump if the quantity is below 20 pieces, 20-30 working days for the conventional vacuum system with less than 5 sets. For more quantity or special requirements, please contact us to check the lead time.
Q: What are your payment terms?
A: By T/T, 50% advance payment/deposit and 50% paid before shipment.
Q: How about the warranty?
A: We offer 1-year warranty (except for the wearing parts).
Q: How about the service?
A: We offer remote video technical support. We can send the service engineer to the site for some special requirements.
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