Product Description


Product Description

2BE1 series water ring vacuum pump is a high-efficiency and energy-saving product researched and developed by our company in combination with the advanced technology of imported products. This series of vacuum pump is a single machine single action structure, which has the advantages of simple structure, convenient maintenance, reliable operation, high efficiency and energy saving. It is usually used to suck air or other gases that are insoluble in water, free of CZPT particles and corrosive, so as to form a certain vacuum in a closed container. Equipped with explosion-proof motor, which can suck flammable and explosive gases. The pump body is made of corrosion-resistant materials or special materials after corrosion-resistant treatment, which can pump corrosive gases to a certain extent.

2BE1 series water ring vacuum pumps are widely used in petrochemical, light industry, chemical industry, pharmaceutical, papermaking, metallurgy, building materials, electrical appliances, food, coal washing, mineral processing, chemical fertilizer and other industries

Our Advantages

1. The impeller is made of nodular cast iron or steel plate welding, and the pump body is made of steel plate, which fully ensures the stability of the impeller and the whole machine under various harsh conditions, and greatly improves the service life of 2BE1 vacuum pump.

2. The shaft sleeve is made of high chromium stainless steel, which increases the service life of the vacuum pump by 5 times compared with the ordinary material.

3. The belt pulley (belt drive) adopts standard high-precision taper sleeve belt pulley, which has reliable operation, convenient disassembly and longer service life of the belt.

4. The coupling (direct drive) adopts standard high-strength elastic coupling, and the elastic elements are made of polyurethane, which can operate stably and reliably and prolong the service life of the equipment.

5. The bearings are imported bearings and the best bearings in China, which ensure the precise positioning of the impeller of 2BE1 vacuum pump and high stability during operation, low vibration and low noise, and ensure the long-term stable operation of the vacuum pump.

6. Mechanical seals (optional parts) are the best imported and domestic products, which fully ensure that the vacuum pump has no leakage during long-term operation and provide the best guarantee for the stable operation of the vacuum pump.

7. Linear cavity design ensures the best pumping effect.

8. The unique top mounted gas-water separator saves space, makes installation more convenient, and effectively reduces noise.

Product Parameters


Type Revolution
 ( transmission way)
Maximum shaft power
motor power
Ultimate vacuum
Maximum air valume
Pump head weight
2BE1 102 1450 (direct connection) 6.0 7.5 3.3 246 110
1750 (belt) 8.0 11 290
2BE1 103 1450 (direct connection) 8.2 11 3.3 340 125
1750 (belt) 11.1 15 412
2BE1 152 1450 (direct connection) 12.5 15 3.3 450 175
1625 (belt) 15.0 18.5 510
1750 (belt) 17.2 22 535
2BE1 153 1450 (direct connection) 16.3 18.5 3.3 600 200
1100 (belt) 10.6 15 445
1300 (belt) 13.4 18.5 535
1620 (belt) 19.6 22 648
1750 (belt) 22.3 30 700
2BE1 202 980 (direct connection) 18.2 22 3.3 750 460
790 (belt) 13.4 18.5 590
880 (belt) 16.3 18.5 670
1100 (belt) 23.8 30 860
1170 (belt) 25.7 30 888
1300 (belt) 30 37 950
2BE1 203 980 (direct connection) 29.5 37 3.3 1080 530
790 (belt) 21.2 30 870
880 (belt) 24.8 30 980
1100 (belt) 34 45 1210
1170 (belt) 38 45 1320
1300 (belt) 42 55 1390
2BE1 252 740 (direct connection) 38 45 3.3 1700 870
590 (belt) 24 30 1200
660 (belt) 31.8 37 1500
830 (belt) 45 55 1770
885 (belt) 54 75 2000
938 (belt) 60 75 2100
2BE1 253 740 (direct connection) 54 75 3.3 2450 930
565 (belt) 37.2 45 1690
660 (belt) 45 55 2100
740 (belt) 52.8 75 2340
792 (belt) 60 75 2560
820 (belt) 68 75 2640
880 (belt) 75.1 90 2780
940 (belt) 88 110 3050
2BE1 303 740 (direct connection) 98 110 3.3 4000 1700
590 (direct connection) 65.5 75 3200
466 (belt) 48 55 2520
530 (belt) 58 75 2820
583 (belt) 64 75 3100
660 (belt) 79.8 90 3550
740 (belt) 96 110 3840
2BE1 305 740 (direct connection) 108 132 3.3 4520 1820
590 (direct connection) 70 90 3750
490 (belt) 55 75 3150
530 (belt) 61 75 3380
583 (belt) 68 90 3700
660 (belt) 90 110 4090
740 (belt) 110 132 4550
2BE1 353 590 (direct connection) 121 160 3.3 5300 1950
390 (belt) 63 75 3580
425 (belt) 71 90 3700
460 (belt) 78 90 4100
520 (belt) 93 110 4620
585 (belt) 113 132 5200
620 (belt) 133 160 5500
660 (belt) 152 185 5850
2BE1 355 590 (direct connection) 136 160 3.3 5700 2200
390 (belt) 75 90 4180
430 (belt) 86 110 4260
464 (belt) 90 110 4850
523 (belt) 113 132 5230
590 (belt) 136 160 6000
660 (belt) 167 185 6510
2BE1 403 330 (belt) 98 132 3.3 4860 3750
372 (belt) 110 132 5400
420 (belt) 131 160 6470
472 (belt) 160 200 7380
530 (belt) 213 250 8100
2BE1 405 330 (belt) 100 132 3.3 6000 3900
372 (belt) 118 160 6700
420 (belt) 140 185 7500
472 (belt) 170 200 8350
530 (belt) 216 250 9450

Detailed Photos

General Manager Speech

Deeply cultivate the vacuum technology, and research,develop and manufacture the vacuum equipment to provide the best solution in the vacuum field and make the vacuum application easier.

Company Profile

ZheJiang Kaien Vacuum Technology Co., Ltd. is a high-tech enterprise integrating R & D, production and operation of vacuum equipment. The company has strong technical force, excellent equipment and considerate after-sales service. The product manufacturing process is managed in strict accordance with IS09001 quality system. It mainly produces and sells screw vacuum pump, roots pump, claw vacuum pump, runoff vacuum pump, scroll pump, water ring vacuum pump, vacuum unit and other vacuum systems.

 New plant plHangZhou

The company’s products have been for a number of food, medicine, refrigeration, drying plants and a number of transformer related equipment manufacturers for vacuum equipment. The products are widely used in vacuum drying and dehydration, kerosene vapor phase drying, vacuum impregnation, vacuum metallurgy, vacuum coating, vacuum evaporation, vacuum concentration, oil and gas recovery, etc.

 High precision machining equipment

The company cooperates with many scientific research institutions and universities, such as ZheJiang University, China University of petroleum, ZheJiang Institute of mechanical design, etc.with colleges and universities to research and develop core technologies, and owns dozens of independent intellectual property patents.Our technology is leading, the product quality is stable, the product has a good reputation in China’s domestic market, is sold all over the country, and is exported to Europe, America, Africa, the Middle East and Southeast Asia,We adhering to the basic tenet of quality, reputation and service, the company takes leading-edge technology of vacuum pump as its own responsibility, and wholeheartedly serves customers of vacuum equipment application in various industries with rigorous working attitude and professional working style.

   Product quality wins consumer cooperation

In shipment

ISO 9001

High tech enterprise certificate

  Welcome to send your needs, we will provide you with the best service,

provide the greatest help!!!


Warranty: One Year
Oil or Not: Oil Free
Structure: Liquid Vacuum Pump
Exhauster Method: Entrapment Vacuum Pump
Vacuum Degree: High Vacuum
Work Function: Mainsuction Pump


Vacuum Pump

Types of vacuum pumps

A vacuum pump is a device that draws gas molecules from a sealed volume and leaves a partial vacuum in its wake. Its job is to create a relative vacuum within a specific volume or volume. There are many types of vacuum pumps, including centrifugal, screw and diaphragm.

Forward centrifugal pump

Positive displacement centrifugal vacuum pumps are one of the most commonly used pump types in the oil and gas industry. Their efficiency is limited to a range of materials and can handle relatively high solids concentrations. However, using these pumps has some advantages over other types of pumps.
Positive displacement pumps have an enlarged cavity on the suction side and a reduced cavity on the discharge side. This makes them ideal for applications involving high viscosity fluids and high pressures. Their design makes it possible to precisely measure and control the amount of liquid pumped. Positive displacement pumps are also ideal for applications requiring precise metering.
Positive displacement pumps are superior to centrifugal pumps in several ways. They can handle higher viscosity materials than centrifuges. These pumps also operate at lower speeds than centrifugal pumps, which makes them more suitable for certain applications. Positive displacement pumps are also less prone to wear.
Positive displacement vacuum pumps operate by drawing fluid into a chamber and expanding it to a larger volume, then venting it to the atmosphere. This process happens several times per second. When maximum expansion is reached, the intake valve closes, the exhaust valve opens, and fluid is ejected. Positive displacement vacuum pumps are highly efficient and commonly used in many industries.

Self-priming centrifugal pump

Self-priming centrifugal pumps are designed with a water reservoir to help remove air from the pump. This water is then recirculated throughout the pump, allowing the pump to run without air. The water reservoir can be located above or in front of the impeller. The pump can then reserve water for the initial start.
The casing of the pump contains an increasingly larger channel forming a cavity retainer and semi-double volute. When water enters the pump through channel A, it flows back to the impeller through channels B-C. When the pump is started a second time, the water in the pump body will be recirculated back through the impeller. This recycling process happens automatically.
These pumps are available in a variety of models and materials. They feature special stainless steel castings that are corrosion and wear-resistant. They can be used in high-pressure applications and their design eliminates the need for inlet check valves and intermediate valves. They can also be equipped with long intake pipes, which do not require activation.
Self-priming centrifugal pumps are designed to run on their own, but there are some limitations. They cannot operate without a liquid source. A foot valve or external liquid source can help you start the self-priming pump.

Screw Pump

The mechanical and thermal characteristics of a screw vacuum pump are critical to its operation. They feature a small gap between the rotor and stator to minimize backflow and thermal growth. Temperature is a key factor in their performance, so they have an internal cooling system that uses water that circulates through the pump’s stator channels. The pump is equipped with a thermostatically controlled valve to regulate the water flow. Also includes a thermostatic switch for thermal control.
Screw vacuum pumps work by trapping gas in the space between the rotor and the housing. The gas is then moved to the exhaust port, where it is expelled at atmospheric pressure. The tapered discharge end of the screw further reduces the volume of gas trapped in the chamber. These two factors allow the pump to work efficiently and safely.
Screw vacuum pumps are designed for a variety of applications. In some applications, the pump needs to operate at very low pressures, such as when pumping large volumes of air. For this application, the SCREWLINE SP pump is ideal. Their low discharge temperature and direct pumping path ensure industrial process uptime. These pumps also feature non-contact shaft seals to reduce mechanical wear. Additionally, they feature a special cantilever bearing arrangement to eliminate potential sources of bearing failure and lubrication contamination.
Screw vacuum pumps use an air-cooled screw to generate a vacuum. They are compact, and clean, and have a remote monitoring system with built-in intelligence. By using the app, users can monitor pump performance remotely.
Vacuum Pump

Diaphragm Pump

Diaphragm vacuum pumps are one of the most common types of vacuum pumps found in laboratories and manufacturing facilities. The diaphragm is an elastomeric membrane held in place around the outer diameter. While it is not possible to seal a diaphragm vacuum pump, there are ways to alleviate the problems associated with this design.
Diaphragm vacuum pumps are versatile and can be used in a variety of clean vacuum applications. These pumps are commercially available with a built-in valve system, but they can also be modified to include one. Because diaphragm pumps are so versatile, it’s important to choose the right type for the job. Understanding how pumps work will help you match the right pump to the right application.
Diaphragm vacuum pumps offer a wide range of advantages, including an extremely long service life. Most diaphragm pumps can last up to ten thousand hours. However, they may be inefficient for processes that require deep vacuum, in which case alternative technologies may be required. Additionally, due to the physics of diaphragm pumps, the size of these pumps may be limited. Also, they are not suitable for high-speed pumping.
Diaphragm vacuum pumps are a versatile subset of laboratory pumps. They are popular for their oil-free construction and low maintenance operation. They are available in a variety of styles and have many optional features. In addition to low maintenance operation, they are chemically resistant and can be used with a variety of sample types. However, diaphragm pumps tend to have lower displacements than other vacuum pumps.

Atmospheric pressure is a key factor in a vacuum pump system

Atmospheric pressure is the pressure created by the collision of air molecules. The more they collide, the greater the pressure. This applies to pure gases and mixtures. When you measure atmospheric pressure, the pressure gauge reads about 14.7 psia. The higher the pressure, the greater the force on the gas molecules.
The gas entering the vacuum pump system is below atmospheric pressure and may contain entrained liquids. The mechanism of this process can be explained by molecular kinetic energy theory. The theory assumes that gas molecules in the atmosphere have high velocities. The resulting gas molecules will then start moving in random directions, colliding with each other and creating pressure on the walls of the vacuum vessel.
Atmospheric pressure is a critical factor in a vacuum pump system. A vacuum pump system is useless without proper atmospheric pressure measurement. The pressure in the atmosphere is the total pressure of all gases, including nitrogen and oxygen. Using total pressure instead of partial pressure can cause problems. The thermal conductivity of various gases varies widely, so working at full pressure can be dangerous.
When choosing a vacuum pump, consider its operating range. Some pumps operate at low atmospheric pressure, while others are designed to operate at high or ultra-high pressure. Different types of pumps employ different technologies that enhance their unique advantages.
Vacuum Pump

The screw pump is less efficient in pumping gases with smaller molecular weight

Vacuuming requires a high-quality pump. This type of pump must be able to pump gas of high purity and very low pressure. Screw pumps can be used in laboratory applications and are more efficient when pumping small molecular weight gases. Chemical resistance is critical to pump life. Chemical resistant materials are also available. Chemically resistant wetted materials minimize wear.
Gear pumps are more efficient than screw pumps, but are less efficient when pumping lower molecular weight gases. Gear pumps also require a larger motor to achieve the same pumping capacity. Compared to gear pumps, progressive cavity pumps also have lower noise levels and longer service life. In addition, gear pumps have a large footprint and are not suitable for tight spaces.
Progressive cavity pumps have two or three screws and a housing and side cover. They are also equipped with gears and bearings. Their mechanical design allows them to operate in high pressure environments with extremely low noise. The progressive cavity pump is a versatile pump that can be used in a variety of applications.
Dry screw compressors have different aspect ratios and can operate at high and low pressures. The maximum allowable differential pressure for screw compressors ranges from 0.4 MPa for 3/5 rotors to 1.5 MPa for 4/6 rotors. These numbers need to be determined on a case-by-case basis.

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editor by CX 2023-07-13