China Good quality High Pressure Heavy Duty Water Liquid Ring Vacuum Pump with Tank and Rotary Vane Pump System supplier

Product Description


— SINCE 1995

2BEC high pressure heavy duty water Liquid Ring Vacuum Pump
with tank and rotary vane pump system

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

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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


Order Sample

heavy duty water Liquid Ring Vacuum Pump with tank


.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

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

rotary vane pump

Can Rotary Vane Pumps Handle Corrosive Gases or Vapors?

Rotary vane pumps are generally not suitable for handling corrosive gases or vapors due to their construction and materials. Here’s a detailed explanation:

– Construction: Rotary vane pumps consist of a rotor with vanes that slide in and out of slots within the rotor. The pumping chamber is sealed by these vanes, creating the necessary vacuum or pressure. The internal components of rotary vane pumps are typically made of materials such as cast iron, steel, or aluminum. While these materials are suitable for many applications, they may not withstand the corrosive effects of certain gases or vapors.

– Corrosion Concerns: Corrosive gases or vapors can react with the internal components of the pump, leading to material degradation, erosion, or chemical reactions. This can result in the formation of deposits, pitting, or damage to the pump’s surfaces. Corrosion can compromise the pump’s performance, efficiency, and longevity. In some cases, it can also introduce contaminants into the pumped medium, affecting the quality of the process or downstream equipment.

– Material Compatibility: The compatibility of the pump’s internal materials with the corrosive gases or vapors is a critical consideration. Many corrosive gases or vapors require specialized materials such as stainless steel, Hastelloy, or other corrosion-resistant alloys to withstand their effects. Rotary vane pumps typically do not have internal components made from these materials, making them unsuitable for handling corrosive substances.

– Alternative Solutions: If corrosive gases or vapors need to be handled, alternative pump technologies specifically designed for such applications may be more appropriate. For example, chemical-resistant pumps made from materials compatible with the corrosive substances, such as diaphragm pumps, magnetic drive pumps, or certain types of centrifugal pumps, are commonly used. These pumps incorporate corrosion-resistant materials and specialized sealing mechanisms to ensure safe and reliable operation.

– Protective Measures: In some cases, it may be possible to use rotary vane pumps for applications involving mildly corrosive gases or vapors by implementing protective measures. This can include installing chemical traps or filters in the pump system to remove or neutralize corrosive substances before they reach the pump. However, the effectiveness and feasibility of such measures depend on the specific application and the level of corrosion resistance required.

It’s important to consult with pump manufacturers or industry experts to determine the most suitable pump technology for handling corrosive gases or vapors. They can provide guidance on selecting the appropriate pump materials and design to ensure safe and efficient operation in corrosive environments.

Overall, while rotary vane pumps offer many advantages in various applications, they are generally not recommended for handling corrosive gases or vapors due to the potential for material damage and performance degradation. Using pumps specifically designed for corrosive applications is crucial to maintain operational integrity and prevent costly failures.

rotary vane pump

What Are the Main Components of a Rotary Vane Pump?

A rotary vane pump consists of several key components that work together to create a pumping action. Here’s a detailed explanation of the main components:

– Rotor: The rotor is the central rotating element of the rotary vane pump. It is typically made of a durable material such as stainless steel or cast iron. The rotor is connected to a drive mechanism, such as an electric motor, which provides the rotational power.

– Vanes: The vanes are sliding elements that are inserted into radial slots in the rotor. They can be made of various materials, including carbon, graphite, or synthetic materials. The number of vanes in a rotary vane pump can vary, but typically there are multiple vanes evenly spaced around the rotor. The vanes are crucial for creating a seal against the stator walls and for generating the pumping action.

– Stator: The stator is the stationary part of the rotary vane pump. It forms the pump chamber and provides the housing for the rotor and vanes. The stator is typically cylindrical in shape with an eccentric bore that accommodates the rotor. It is commonly made of materials such as cast iron or stainless steel to ensure durability and resistance to wear.

– Inlet and Outlet Ports: The rotary vane pump has separate inlet and outlet ports. The inlet port allows the entry of gas or fluid into the pump, while the outlet port facilitates the discharge of the pumped medium. These ports are strategically positioned on the pump housing to enable the flow of the medium in and out of the pump.

– Seals: Seals are essential components of a rotary vane pump as they prevent leakage and maintain the integrity of the pumping system. The primary seal is formed between the vanes and the stator walls, ensuring that gas or fluid is contained within the pump chamber during the pumping process. Additional seals may be present at the inlet and outlet ports to prevent any leakage at these points.

– Lubrication System: Rotary vane pumps often require lubrication to minimize friction and wear between the rotating components. Lubrication is typically achieved by introducing a small amount of oil or lubricant into the pump chamber. The lubricant helps reduce friction between the vanes and the stator walls, ensuring smooth operation and extending the lifespan of the pump.

– Exhaust Valve: Some rotary vane pumps feature an exhaust valve, also known as an anti-suckback valve. This valve is located at the outlet port and prevents the reverse flow of gas or fluid back into the pump when it is not in operation. The exhaust valve helps maintain the integrity of the vacuum or pressure created by the pump.

– Drive Mechanism: The drive mechanism provides the rotational power to the rotor, enabling the pumping action. In most cases, an electric motor is used as the drive mechanism, although other power sources such as hydraulic or pneumatic systems can also be employed.

– Base or Mounting Plate: The base or mounting plate provides a stable platform for the rotary vane pump. It is typically made of sturdy materials such as cast iron or steel and is designed to support the weight of the pump and provide a secure attachment point for installation.

– Control and Monitoring Devices (Optional): Depending on the specific application, rotary vane pumps may be equipped with control and monitoring devices. These can include pressure sensors, flow meters, temperature sensors, and control panels that allow for the regulation and monitoring of pump performance.

– Safety Features (Optional): Some rotary vane pumps may include safety features such as overpressure relief valves or automatic shutdown mechanisms to prevent damage to the pump or the system in case of abnormal operating conditions.

In summary, the main components of a rotary vane pump include the rotor, vanes, stator, inlet and outlet ports, seals, lubrication system, exhaust valve, drive mechanism, base or mounting plate, as well as optional control and monitoring devices and safety features. These components work together to create a continuous pumping action and ensure the efficient operation of the rotary vane pump.

China Good quality High Pressure Heavy Duty Water Liquid Ring Vacuum Pump with Tank and Rotary Vane Pump System   supplier China Good quality High Pressure Heavy Duty Water Liquid Ring Vacuum Pump with Tank and Rotary Vane Pump System   supplier
editor by CX 2024-02-28


Leave a Reply

Your email address will not be published. Required fields are marked *