China supplier 400m3/H 2bw3131 Liquid Ring 2BV6131 Vacuum Pump Unit vacuum pump oil

Product Description

Liquid ring vacuum pump units

Product Description

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.

Main features

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.

Flow chart

Technical data



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 33
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

Pressure diagram




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.







After-sales Service: Online Video Instruction
Warranty: 1 Year
Vacuum Degree: Vacuum
Max Pumping Speed: 400 M3/H
Motor Power: 11 Kw
Ultimate Pressure: 33hpa

Vacuum Pump

Types of vacuum pumps

A vacuum pump is a device that pulls gas molecules out of a sealed volume and maintains a partial vacuum. Its job is to create a relative vacuum within its capabilities. Several types of vacuum pumps are available, including scroll and rotary piston models. Each has its own characteristics and uses. To learn more, read this article.

Screw Pump

Screw vacuum pumps use a mechanical screw to move an air or gas chamber to the axial housing wall. The movement of the chamber reduces the volume of gas, which is pre-compressed before being expelled through the pressure connection. These pumps can be single-pitch models or variable-pitch models. Variable pitch models feature variable pitch rotors that help distribute heat loads evenly across the rotor. Some models also include a thermostatic control valve that shuts off the pump if the water temperature gets too high. Screw vacuum pumps are available in single-ended or double-ended designs. Single-ended and double-ended screw pumps provide up to 3.7 x 10-4 Torr and an ultimate vacuum of 900 m3/h (560 cfm), which is sufficient for many industrial processes. Progressive cavity pumps are particularly suitable for vapor compression applications. These pumps also have an internal rotor to minimize layer formation. Combined with air cooling, they are suitable for use in hazardous environments. In addition, the screw rotor design prevents the build-up of substances in the pump cavity that could react with high temperatures. These pumps are also easily removable for quick cleaning. Screw vacuum pumps are also designed for low cost and minimal maintenance. Agknx screw vacuum pumps are designed in Germany and are very reliable and economical. Pump performance depends on cooling system and temperature. The temperature of the water used should be kept within a certain range, otherwise the pump may overheat and fail. Screw vacuum pumps are often used in scientific experiments. They are standard main pumps in large storage rings, gravitational wave detectors, and space simulation chambers. One of the largest ultra-high vacuum chambers in the world is made of screw vacuum pumps. An example is the KATRIN experiment. There are two types of screw vacuum pumps: oil-sealed and dry. Oil-sealed screw pumps use oil as a sealant and coolant. They are suitable for demanding vacuum applications such as woodworking and plastics processing. Dry screw pumps have an air-cooled chamber, and they can achieve higher vacuum levels than oil-sealed pumps.

Rotary Piston Vacuum Pumps

Rotary Piston Vacuum Pumps provide the rugged performance essential for applications requiring vacuum. They can deliver flow rates up to 1280 acfm and reach deep vacuum levels up to 0.0004 Torr. They are available in single-stage and two-stage models. The report also provides detailed information about the key players, their financial status, and business overview. A rotary piston vacuum pump is a versatile and affordable vacuum device. They are available in single-stage and two-stage configurations with higher capacity and higher vacuum. They can be easily maintained by an in-house maintenance team or by a local third-party service shop. Pump manufacturers can also provide services. Rotary piston vacuum pumps are available in single-stage and compound designs. They are ideal for a variety of applications. Their high-performance design enables them to operate at any pressure up to atmospheric pressure. They also have no metal-to-metal contact, which makes them ideal for dirty applications. Whether you need a pump that can operate at high or low pressure, a rotary piston vacuum pump is an excellent choice. When purchasing a rotary piston vacuum pump, it is important to choose a manufacturer with a reputation for providing high-quality service and repairs. In addition to the high quality of the pump, you also need to ensure its availability. You should also consider the cost and quality of the part. A good vacuum pump company should also provide technical support, service support and accessories. Oil-free pumps are a popular choice for laboratories, clean rooms and confined rooms. Their high-quality parts are made from lightweight, corrosion-resistant and specially formulated polymers. Oil-free pumps can handle high levels of air moisture and are excellent at removing contaminants. However, they are not suitable for applications containing organic vapors or acids. Atlas Copco’s GLS rotary piston pumps are a popular choice for industrial vacuum applications. Its space-saving design makes it an ideal solution for harsh environments. It is also very reliable and has low lifecycle costs. It has an automatic lubrication system and water mizer to minimize water consumption.
Vacuum Pump

Scroll Vacuum Pumps

<br Scroll Vacuum Pumps can be used to pump air, gases, and other fluids. They are suitable for creating a vacuum in transfer chambers, mass spectrometers, and load lock chambers. They are also ideal for helium leak detectors and other analytical equipment. Scroll vacuum pumps are available in a variety of models, including the diaphragm, turbine, and oil-dry scroll models. They are used in a variety of industries, including the semiconductor, biotechnology, and pharmaceutical industries. Flexible and durable oil-free scroll vacuum pumps are an excellent choice for light industrial, general laboratory, and research applications. They also offer several advantages over other vacuum pumps, including low operating costs and environmental sustainability. Scroll vacuum pumps do not require oil, which is a big advantage in terms of cost. Scroll vacuum pumps are also quieter. Scroll vacuum pumps are designed for low, medium, and high vacuum systems. They create a high vacuum and cannot tolerate particles. Although they are relatively small, they are ideal for vacuum laboratory applications and are also suitable for dry vacuum pumping. They can be combined with chemically resistant PTFE components, making them more suitable for chemical applications. Scroll vacuum pumps feature a unique design that makes them very versatile and efficient. The pump has two helical structures, one is fixed and the other is rotating, which can effectively pump gas and liquid. When the rotor begins to move, the gas is compressed slightly and then flows through the system to the exhaust port. Scroll vacuum pumps are efficient, oil-free and compact. Known for their high tolerance to the atmosphere, they feature sensorless INFORM(r) control to minimize noise and vibration. These vacuum pumps are ideal for low to medium flow applications including analytical equipment, freeze dryers, vacuum coaters and mass spectrometers. The most important advantage of a scroll vacuum pump is its reliability. They can be used for three years or more without problems and are easy to maintain. With proper maintenance, they can reduce repair costs.
Vacuum Pump

Diaphragm vacuum pumps

Diaphragm vacuum pumps are used in a variety of industrial processes. These pumps use an elastic diaphragm fixed around the outer diameter. They are efficient and can handle most types of liquids. They are commonly used for dewatering, filling and water removal. These pumps are easy to maintain. Diaphragm vacuum pumps are available in a variety of sizes and power outputs. Oil-free diaphragm vacuum pumps do not require oil, lubrication and cooling. These pumps are compatible with many types of laboratory equipment. Diaphragm vacuum pumps are equipped with dual voltage motors and DC drives for greater flexibility and durability. Diaphragm vacuum pumps can achieve higher vacuum levels than rotary vane pumps. They are more efficient than diaphragm pumps. They do not require oil and require less maintenance than their rotary vane counterparts. However, the diaphragms of these pumps may need to be replaced every few years. Diaphragm vacuum pumps are the most popular type of vacuum pump and can be used for a variety of applications. They can be used for everyday work and can be large enough to be used in a vacuum oven or rotary evaporator. Diaphragm vacuum pumps use pulsed motion to move air. They eliminate the need for oil and are highly chemical and steam resistant. They can handle a wide variety of samples, including high viscosity liquids. Diaphragm vacuum pumps are generally smaller than other types of vacuum pumps. Scroll pumps are made of metal and are generally recommended for solvent and water samples. They are not recommended for high acid samples. However, they are suitable for freeze drying. They can also be used for concentration applications. In this way, they have greater displacement capacity and can reach higher ultimate vacuum levels.

China supplier 400m3/H 2bw3131 Liquid Ring 2BV6131 Vacuum Pump Unit   vacuum pump oil	China supplier 400m3/H 2bw3131 Liquid Ring 2BV6131 Vacuum Pump Unit   vacuum pump oil
editor by CX 2023-11-24