China Standard 2be Piston Rotary Vane Pump Roots Liquid Water Ring Vacuum Pump for Paper Mill Chemical Fertilizer vacuum pump connector

Product Description


— SINCE 1995

2BE Piston Rotary Vane Pump Roots
Liquid Water Ring Vacuum Pump for Paper Mill Chemical Fertilizer

The water ring pump was originally used as a self-priming water pump, and then gradually used in many industrial sectors such as petroleum, chemical industry, machinery, mining, light industry, medicine and food. In many processes of industrial production, such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum rehydration and vacuum degassing, water ring pumps are widely used. Due to the rapid development of vacuum application technology, water ring pumps have always been valued in terms of obtaining rough vacuum. Because the gas compression in the water ring pump is isothermal, it can pump flammable and explosive gases, and also dust and water-containing gases. Therefore, the application of water ring pumps is increasing.

Product Description


The 2BEC type water ring vacuum pump and compressor are not only high efficiency and energy saving, but also very suitable for long-term, continuous operation.

Operating under rough vacuum, the working conditions of liquid ring pumps are often extremely harsh. The 2BEC water ring vacuum pump has been designed to fully consider that it must be able to pump all kinds of gases. It has been widely used in papermaking, coal mines, power plants, vacuum filtration, chemical, petrochemical, food processing and other industries.

2BEC type water ring vacuum pump can be used with a variety of driving devices, such as belt drive, gearbox, synchronous motor, frequency converter, etc. In addition, in order to save space, a series operation mode driven by 1 motor can also be adopted, and up to 4 pumps can be operated in series at the same time.

When equipped with a middle partition, the left and right parts of the 2BEC water ring vacuum pump can operate at different vacuum degrees. As long as the suction pressure difference between the 2 parts is less than 80kPa, a 2BEC water ring vacuum pump can be used as 2 independent vacuum pumps. This feature further improves the operating flexibility of the 2BEC water ring vacuum pump.

Product Parameters


Model Speed Max.Power Motor Power Aspirating Volume Min. hpa Weight
r/min KW KW m3/h m3/min mbar KG
2BEC 400  340 82 110 4850 80.8 160 3275
390 95 110 5650 94.2
440 115 132 6250 104.2
490 134 160 6900 115
530 148 185 7470 124.5
570 167 200 8000 133.3
610 189 220 8600 143.3
2BEC 420  340 108 132 6650 110.8 160 3720
390 132 160 7650 127.5
440 157 185 8550 142.5
490 180 200 9400 156.6
530 204 220 10150 169.2
570 229 250 10700 178.3
610 260 315 11600 193.3
2BEC 500  260 142 160 8700 145 160 6110
300 171 200 10150 169.2
340 203 250 11400 190
380 238 280 12700 211.7
420 277 315 13800 230
470 338 400 15500 258.3
2BEC 520  260 172 200 10700 178.3 160 6740
300 210 250 12300 205
340 245 280 14000 233.3
380 288 315 15400 256.7
420 337 400 16800 280
470 412 500 18700 311.7
2BEC 600  230 205 250 12700 211.7 160 9100
260 243 280 14400 240
290 285 315 16000 266.7
320 322 355 17500 291.7
350 365 450 19000 316.7
400 465 560 21600 360
2BEC 620  230 250 280 15600 260 160 10700
260 300 355 17700 295
290 340 400 19500 325
320 390 450 21300 355
350 450 500 23200 386.7
400 570 630 26200 436.7
2BEC 670 210 280 315 18300 305 160 12700
240 350 400 20400 340
270 415 450 23160 386
300 465 560 25500 425
320 523 630 27000 450
330 545 630 27720 462
370 670 800 30960 516
2BEC 720 190 345 400 21900 365 160 15700
210 395 450 24300 405
240 475 560 27480 458
270 550 630 30540 509
300 642 710 33780 563
340 795 900 38100 635



1. There are large inspection ports on both sides of the pump cover, which can be used to check gaps, corrosion conditions and fouling.


2. The 2BEC water ring vacuum pump is prepared with suction and exhaust flanges on the top and side at the same time, and they have the same caliber, so the on-site installation is more flexible and convenient.


3. The bearings are all imported original bearings, which ensure the precise positioning of the impeller of the 2BEC water ring vacuum pump and the high stability during operation.


4. The impeller is made of nodular cast iron or welded by steel or stainless steel plates, which fully guarantees the stability of the 2BEC vacuum pump impeller under various harsh working conditions and greatly improves the service life of the 2BEC water ring vacuum pump.


5. The pump body is all made of steel plate or stainless steel plate, which improves the service life of the 2BEC water ring vacuum pump.


6. The shaft sleeve of the 2BEC water ring vacuum pump is the most vulnerable part. The company uses all stainless steel to make it, and its life span is 5 times longer than that of ordinary materials.


7. The pulley (belt drive) adopts a standard high-precision tapered pulley, which is reliable in operation, long in belt life and easy to disassemble.


8. The unique top-mounted gas-water separator saves space and effectively reduces noise.


9. All castings are made of resin sand with good surface quality. The surface of the casting does not need to be greasy, so that the 2BEC water ring vacuum pump has the best heat dissipation effect.


10.The mechanical seals (optional parts) are all imported parts to fully ensure that the 2BEC water ring vacuum pump has no leakage during long-term operation.

Detailed Photos

Packaging & Shipping


Driven machines
Waste water treatment Thickeners,filter presses,flocculation apparata,aerators,raking equipment,combined longitudinal and rotary rakes,pre-thickeners,screw pumps,water turbines,centrifugal pumps Dredgers Bucket conveyors, dumping devices, carterpillar travelling gears, bucket wheel excavators as pick up, bucket wheel excavator for primitive material, cutter head, traversing gears
Chemical industry Plate bending machines, extruders, dough mills, rubbers calenders, cooling drums, mixers for uniform media, agitators for media with uniform density, toasters, centrifuges Metal working mills plate tilters, ingot pushers, winding machines, cooling bed transfer frames, roller straigheners, table continuous intermittent, roller tables reversing tube mills, shears continuous, casting drivers, reversing CHINAMFG mills
Metal working mills Reversing slabbing mills. reversing wire mills, reversing sheet mills, reversing plate mill, roll adjustment drives Conveyors Bucket conveyors, hauling winches, hoists, belt conveyors, good lifts, passenger lifts, apron conveyors, escalators, rail travlling gears
Frequency converters Reciprocating compressors
Cranes Slewing gears, luffing gears, travelling gears, hoisting gear, derricking jib cranes Cooling towers Cooling tower fans, blowers axial and radial
Cane sugar production Cane knives, cane mills Beet sugar production Beet cossettes macerators, extraction plants, mechanical refrigerators, juice boilers, sugar beet washing machines, sugar beet cutter
Paper machines Pulper drives Cableways Material ropeways, continuous ropeway
Cement industry Concrete mixer, breaker, rotary kilns, tube mills, separators, roll crushers    

Company Profile


Established in 1995 , HangZhou Boji Machinery is a professional manufacturer and exporter that is concerned with the design, development and production of Pump and Gearbox Speed Reducer. We are located in HangZhou of ZheJiang Province, with convenient transportation access. With our own brand “TianQi”, all of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.
Our company possesses complete machining center, lathe, gear shaping machine, gear milling machine, gear grinding machine and assembling lines. Our well-equipped facilities and excellent quality control throughout all stages of production enables us to guarantee total customer satisfaction.
Besides, In 2005,we attained ISO9001 certification. As a result of our high quality products and outstanding customer service, we have gained a global sales network CHINAMFG South America, Saudi Arabia, Vietnam, Pakistan, Philippines, South Africa and other countries and regions.
With rich export experience, high quality products, competitive prices, good service and in-time delivery, we certain that we can meet all of your requirement and exceed your expectations. Our feature is bright with new cooperative relationships with companies from all over the world. We look CHINAMFG to speaking with you to future discuss how we can be of service to you.


1. Who are we?
We are the Factory, with over 25 years of production experience, based in ZheJiang , China, start from 1995,sell to Domestic Market(50.00%),Mid East(10.00%),Southeast Asia(10.00%),Western Europe(5.00%),South America(5.00%),Eastern Europe(5.00%),Eastern Asia(5.00%),North America(3.00%),Africa(2.00%),Southern Europe(2.00%),South Asia(2.00%),Central America(1.00%).

2. Can you customize according to our requirements?
Yes, we can design nonstandard products according to customer’s drawing and sample.

3.What can you buy from us?
speed reducer,gearbox,gear motor,pump,crusher

4. Why should you buy from us not from other suppliers?
Founded in 1995, with over 20 years of production experience and credibility. With professional engineer team, advanced technology production and skilled workers.Specialized in the production of reducer. Map sample processing business can be undertaken.

5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,Credit Card,PayPal,Western Union,Cash;
Language Spoken:English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian

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After-sales Service: Assembly Assistant
Warranty: 1 Year
Oil or Not: Oil Free
US$ 10000/Piece
1 Piece(Min.Order)


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Roots Liquid Water Ring Vacuum Pump for Paper Mill


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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

vacuum pump

How Are Vacuum Pumps Employed in the Production of Electronic Components?

Vacuum pumps play a crucial role in the production of electronic components. Here’s a detailed explanation:

The production of electronic components often requires controlled environments with low or no atmospheric pressure. Vacuum pumps are employed in various stages of the production process to create and maintain these vacuum conditions. Here are some key ways in which vacuum pumps are used in the production of electronic components:

1. Deposition Processes: Vacuum pumps are extensively used in deposition processes, such as physical vapor deposition (PVD) and chemical vapor deposition (CVD), which are commonly employed for thin film deposition on electronic components. These processes involve the deposition of materials onto substrates in a vacuum chamber. Vacuum pumps help create and maintain the necessary vacuum conditions required for precise and controlled deposition of the thin films.

2. Etching and Cleaning: Etching and cleaning processes are essential in the fabrication of electronic components. Vacuum pumps are used to create a vacuum environment in etching and cleaning chambers, where reactive gases or plasmas are employed to remove unwanted materials or residues from the surfaces of the components. The vacuum pumps help evacuate the chamber and ensure the efficient removal of byproducts and waste gases.

3. Drying and Bake-out: Vacuum pumps are utilized in the drying and bake-out processes of electronic components. After wet processes, such as cleaning or wet etching, components need to be dried thoroughly. Vacuum pumps help create a vacuum environment that facilitates the removal of moisture or solvents from the components, ensuring their dryness before subsequent processing steps. Additionally, vacuum bake-out is employed to remove moisture or other contaminants trapped within the components’ materials or structures, enhancing their reliability and performance.

4. Encapsulation and Packaging: Vacuum pumps are involved in the encapsulation and packaging stages of electronic component production. These processes often require the use of vacuum-sealed packaging to protect the components from environmental factors such as moisture, dust, or oxidation. Vacuum pumps assist in evacuating the packaging materials, creating a vacuum-sealed environment that helps maintain the integrity and longevity of the electronic components.

5. Testing and Quality Control: Vacuum pumps are utilized in testing and quality control processes for electronic components. Some types of testing, such as hermeticity testing, require the creation of a vacuum environment for evaluating the sealing integrity of electronic packages. Vacuum pumps help evacuate the testing chambers, ensuring accurate and reliable test results.

6. Soldering and Brazing: Vacuum pumps play a role in soldering and brazing processes for joining electronic components and assemblies. Vacuum soldering is a technique used to achieve high-quality solder joints by removing air and reducing the risk of voids, flux residuals, or oxidation. Vacuum pumps assist in evacuating the soldering chambers, creating the required vacuum conditions for precise and reliable soldering or brazing.

7. Surface Treatment: Vacuum pumps are employed in surface treatment processes for electronic components. These processes include plasma cleaning, surface activation, or surface modification techniques. Vacuum pumps help create the necessary vacuum environment where plasma or reactive gases are used to treat the component surfaces, improving adhesion, promoting bonding, or altering surface properties.

It’s important to note that different types of vacuum pumps may be used in electronic component production, depending on the specific process requirements. Commonly used vacuum pump technologies include rotary vane pumps, turbo pumps, cryogenic pumps, and dry pumps.

In summary, vacuum pumps are essential in the production of electronic components, facilitating deposition processes, etching and cleaning operations, drying and bake-out stages, encapsulation and packaging, testing and quality control, soldering and brazing, as well as surface treatment. They enable the creation and maintenance of controlled vacuum environments, ensuring precise and reliable manufacturing processes for electronic components.

vacuum pump

Can Vacuum Pumps Be Used for Leak Detection?

Yes, vacuum pumps can be used for leak detection purposes. Here’s a detailed explanation:

Leak detection is a critical task in various industries, including manufacturing, automotive, aerospace, and HVAC. It involves identifying and locating leaks in a system or component that may result in the loss of fluids, gases, or pressure. Vacuum pumps can play a significant role in leak detection processes by creating a low-pressure environment and facilitating the detection of leaks through various methods.

Here are some ways in which vacuum pumps can be used for leak detection:

1. Vacuum Decay Method: The vacuum decay method is a common technique used for leak detection. It involves creating a vacuum in a sealed system or component using a vacuum pump and monitoring the pressure change over time. If there is a leak present, the pressure will gradually increase due to the ingress of air or gas. By measuring the rate of pressure rise, the location and size of the leak can be estimated. Vacuum pumps are used to evacuate the system and establish the initial vacuum required for the test.

2. Bubble Testing: Bubble testing is a simple and visual method for detecting leaks. In this method, the component or system being tested is pressurized with a gas, and then immersed in a liquid, typically soapy water. If there is a leak, the gas escaping from the component will form bubbles in the liquid, indicating the presence and location of the leak. Vacuum pumps can be used to create a pressure differential that forces gas out of the leak, making it easier to detect the bubbles.

3. Helium Leak Detection: Helium leak detection is a highly sensitive method used to locate extremely small leaks. Helium, being a small atom, can easily penetrate small openings and leaks. In this method, the system or component is pressurized with helium gas, and a vacuum pump is used to evacuate the surrounding area. A helium leak detector is then used to sniff or scan the area for the presence of helium, indicating the location of the leak. Vacuum pumps are essential for creating the low-pressure environment required for this method and ensuring accurate detection.

4. Pressure Change Testing: Vacuum pumps can also be used in pressure change testing for leak detection. This method involves pressurizing a system or component and then isolating it from the pressure source. The pressure is monitored over time, and any significant pressure drop indicates the presence of a leak. Vacuum pumps can be used to evacuate the system after pressurization, returning it to atmospheric pressure for comparison or retesting.

5. Mass Spectrometer Leak Detection: Mass spectrometer leak detection is a highly sensitive and precise method used to identify and quantify leaks. It involves introducing a tracer gas, usually helium, into the system or component being tested. A vacuum pump is used to evacuate the surrounding area, and a mass spectrometer is employed to analyze the gas samples for the presence of the tracer gas. This method allows for accurate detection and quantification of leaks down to very low levels. Vacuum pumps are crucial for creating the necessary vacuum conditions and ensuring reliable results.

In summary, vacuum pumps can be effectively used for leak detection purposes. They facilitate various leak detection methods such as vacuum decay, bubble testing, helium leak detection, pressure change testing, and mass spectrometer leak detection. Vacuum pumps create the required low-pressure environment, assist in evacuating the system or component being tested, and enable accurate and reliable leak detection. The choice of vacuum pump depends on the specific requirements of the leak detection method and the sensitivity needed for the application.

vacuum pump

Can Vacuum Pumps Be Used in Food Processing?

Yes, vacuum pumps are widely used in food processing for various applications. Here’s a detailed explanation:

Vacuum pumps play a crucial role in the food processing industry by enabling the creation and maintenance of vacuum or low-pressure environments. They offer several benefits in terms of food preservation, packaging, and processing. Here are some common applications of vacuum pumps in food processing:

1. Vacuum Packaging: Vacuum pumps are extensively used in vacuum packaging processes. Vacuum packaging involves removing air from the packaging container to create a vacuum-sealed environment. This process helps extend the shelf life of food products by inhibiting the growth of spoilage-causing microorganisms and reducing oxidation. Vacuum pumps are used to evacuate the air from the packaging, ensuring a tight seal and maintaining the quality and freshness of the food.

2. Freeze Drying: Vacuum pumps are essential in freeze drying or lyophilization processes used in food processing. Freeze drying involves removing moisture from food products while they are frozen, preserving their texture, flavor, and nutritional content. Vacuum pumps create a low-pressure environment that allows frozen water to directly sublimate from solid to vapor, resulting in the removal of moisture from the food without causing damage or loss of quality.

3. Vacuum Cooling: Vacuum pumps are utilized in vacuum cooling processes for rapid and efficient cooling of food products. Vacuum cooling involves placing the food in a vacuum chamber and reducing the pressure. This lowers the boiling point of water, facilitating the rapid evaporation of moisture and heat from the food, thereby cooling it quickly. Vacuum cooling helps maintain the freshness, texture, and quality of delicate food items such as fruits, vegetables, and bakery products.

4. Vacuum Concentration: Vacuum pumps are employed in vacuum concentration processes in the food industry. Vacuum concentration involves removing excess moisture from liquid food products to increase their solids content. By creating a vacuum, the boiling point of the liquid is reduced, allowing for gentle evaporation of water while preserving the desired flavors, nutrients, and viscosity of the product. Vacuum concentration is commonly used in the production of juices, sauces, and concentrates.

5. Vacuum Mixing and Deaeration: Vacuum pumps are used in mixing and deaeration processes in food processing. In the production of certain food products such as chocolates, confectioneries, and sauces, vacuum mixing is employed to remove air bubbles, achieve homogeneity, and improve product texture. Vacuum pumps aid in the removal of entrapped air and gases, resulting in smooth and uniform food products.

6. Vacuum Filtration: Vacuum pumps are utilized in food processing for vacuum filtration applications. Vacuum filtration involves separating solids from liquids or gases using a filter medium. Vacuum pumps create suction that draws the liquid or gas through the filter, leaving behind the solid particles. Vacuum filtration is commonly used in processes such as clarifying liquids, removing impurities, and separating solids from liquids in the production of beverages, oils, and dairy products.

7. Marinating and Brining: Vacuum pumps are employed in marinating and brining processes in the food industry. By applying a vacuum to the marinating or brining container, the pressure is reduced, allowing the marinade or brine to penetrate the food more efficiently. Vacuum marinating and brining help enhance flavor absorption, reduce marinating time, and improve the overall taste and texture of the food.

8. Controlled Atmosphere Packaging: Vacuum pumps are used in controlled atmosphere packaging (CAP) systems in the food industry. CAP involves modifying the gas composition within food packaging to extend the shelf life and maintain the quality of perishable products. Vacuum pumps aid in the removal of oxygen or other unwanted gases from the package, allowing the introduction of a desired gas mixture that preserves the food’s freshness and inhibits microbial growth.

These are just a few examples of how vacuum pumps are used in food processing. The ability to create and control vacuum or low-pressure environments is a valuable asset in preserving food quality, enhancing shelf life, and facilitating various processing techniques in the food industry.

China Standard 2be Piston Rotary Vane Pump Roots Liquid Water Ring Vacuum Pump for Paper Mill Chemical Fertilizer   vacuum pump connector	China Standard 2be Piston Rotary Vane Pump Roots Liquid Water Ring Vacuum Pump for Paper Mill Chemical Fertilizer   vacuum pump connector
editor by CX 2024-04-02