China Hot selling High Vacuum Degree Vacuum System Vacuum Pump with Roots Pump with Hot selling

Product Description

Product Description

High Vacuum Degree Vacuum System Liquid Ring And Rotary Vane Vacuum Pump With Roots Pump

JZJS roots vacuum set is made up of the series connected roots pump and liquid ring pump, where the roots pump is the main pump and the water ring pump is used as the backing pump.

It overcomes the ultimate pressure difference when using a single liquid ring pump (compared with the liquid ring pump, the ultimate pressure of the unit is greatly improved), and the low pumping rate under a certain pressure, at the same time, retaining the advantage of the fast work and higher pumping rate of the roots pump. In particular, it is adapt to pump a great amount of condensable vapors.

Roots water ring vacuum system includes the following types:

(1) Roots pump-water ring pump: The liquid ring pump in this unit is used to produce the fore vacuum required for the roots pump. Generally, the ultimate vacuum degree of the single-stage water ring vacuum pump is not high, and the roots pumps require higher ultimate vacuum degree, thus, the single-stage liquid ring pump is not usually used as the backing pump of the roots pump. The two-stage water ring pump with lower ultimate pressure can be applied as the backing pump, to reduce the ultimate pressure of the unit.
The ultimate pressure of 1 roots pump and 1 water ring pump is 400PA, which can meet the general needs of vacuum. If combine 2 series connected roots pumps and the water ring pump, the ultimate pressure can be greatly increased (up to 25PA). Therefore, for this type, the combination of 2 series connected roots pumps with a two-stage pump as the backing pump is common to compose the unit. If need a higher ultimate pressure, a combination of 3 roots pumps with a liquid ring pump can be used, which ultimate pressure can be up to t 1PA.

(2) If the three-stage roots liquid ring unit can not meet the ultimate pressure, the roots pump-water ring pump parallel mechanical vacuum pump can be adopted; This unit is mainly for a vacuumizing system which is used to treat a great amount of water vapor, and requires a long time and a very high ultimate vacuum degree, e. G, in the vacuum drying area.
In the vacuum system which is used to treat a great amount of water vapor, liquid ring pump is more appropriate choice. However, its ultimate vacuum degree is not high, as a result, the ultimate vacuum degree of the entire unit is lower (relatively).

Although in the vacuumizing system requiring higher vacuum degree, the mechanical vacuum pump of higher ultimate vacuum shall be used as the backing pump, the gas ballast mechanical vacuum pump and water-ring pump can be connected in series to act as the fore pump of the roots pump. In vacuum drying, first use the liquid ring pump for backing pumping until there is a significant reduction in water vapor, and then switch on the gas ballast mechanical vacuum pump, and switch off the water ring pump.

Roots pump-water ring pump system is widely used for the vacuum distillation, vacuum evaporation, dehydration and crystallization in the chemical industry; CHINAMFG drying in the food industry; The vacuum drying in the pharmaceutical industry; The terylene section cutting in the light textile industry; The vacuumizing system in high-altitude simulation test, and so on.

Note : There is more models for bigger flow rate and higher lift , but it can not be listed all.
Please contact us to ask for more models !!!

Detailed Photos


Packaging & Shipping

Packing Details  : One pump in One plywood case
Delivery Details : 30 days after order confirmation

Standard package without original wood, no fumigation needed.


Company Profile

ZheZheJiang oto Pump Industrial Co., Ltd. is a professional pump manufacturer integrating R&D, manufacturing, sales and service as a whole, which has been certified by ISO9001 international quality management system. 

Located in Xihu (West Lake) Dis.a Industrial Park, ZheJiang , CHINAMFG Pump Industrial possesses 2 manufacturing bases in ZheJiang and ZHangZhoug. Since our inception, CHINAMFG Pump Industrial has been committed to the innovation and development of various pumps. Our leading products include self-priming trash pump, centrifugal pump, submersible pump, diaphragm pump, vacuum pump, diesel pump, fire pump, etc.



Q: Can I chat with you online? What is your company official website?

Q: What type of company CHINAMFG is? 
A: CHINAMFG is a manufacture and trading company, has factories in ZheJiang and ZHangZhoug, with export and import license.

Q: What kinds of pumps do you supply?
A: Our products including self-priming trash pump, centrifugal pump, diaphragm pump, submersible pump, chemical pump, oil pump, diesel pump, fire fighting pump, etc.

Q: What is your payment terms?
A: Alibaba Trade Assurance, Western Union, Paypal, T/T, L/C, etc.

Q: Can you provide OEM, ODM service?
A: Yes. We have factories in ZheJiang and ZHangZhoug, we can make products according to your requirements.

Q: Why should we buy from you?
A: We are committed to provide best quality products at minimum delivery time and competitive price. We believe this is what customer wants. We are satified until customers are.

Q: What is your warranty period?
A: We provide 1 year of unconditional warranty on our products for the manufacturing defects.

Q: What about delivery time?
A: Normally our production time is within 2 weeks. Please confirm before order.

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After-sales Service: 1 Year
Warranty: 1 Year
Max.Head: 50-80m
Max.Capacity: 50-100 L/min
Driving Type: Motor
Impeller Number: Multistage Pump
US$ 1200/Piece
1 Piece(Min.Order)




roots vacuum pump

How Are Roots Vacuum Pumps Utilized in the Automotive Industry?

Roots vacuum pumps play a significant role in various applications within the automotive industry. Here’s a detailed explanation:

1. Brake System Vacuum Pumps:

– Vacuum Boosters: Roots vacuum pumps are commonly used as vacuum boosters in automotive brake systems. They assist in enhancing the braking performance by providing the necessary vacuum for power brake operation. When the driver applies the brake pedal, the vacuum booster uses the suction power generated by the Roots pump to amplify the force applied to the brake master cylinder, resulting in more effective braking.

– Electric Brake Vacuum Pumps: In modern electric or hybrid vehicles, where traditional engine-driven vacuum sources may not be available, electric brake vacuum pumps are utilized. These pumps, often based on the Roots principle, generate vacuum independently to power the brake booster and ensure reliable braking performance.

2. Emissions Control:

– Evaporative Emission Control: Roots vacuum pumps are employed in evaporative emission control systems to prevent the release of harmful vapors from the fuel system into the atmosphere. These pumps create a vacuum within the system, purging and storing fuel vapors in a canister for subsequent combustion or recycling.

– Positive Crankcase Ventilation (PCV): PCV systems, which are designed to reduce emissions and maintain the integrity of the engine, also utilize Roots vacuum pumps. These pumps draw crankcase gases and vapors, including oil mist, from the engine’s crankcase into the intake manifold for combustion, improving overall engine efficiency and reducing pollution.

3. Engine Testing and Development:

– Vacuum Leakage Testing: Roots vacuum pumps are utilized for vacuum leakage testing in engine manufacturing and development. By creating a vacuum in the intake manifold or other engine components, these pumps enable the detection of leaks and ensure the integrity of the engine’s air delivery system.

– Air Flow Calibration: During engine testing and calibration, Roots vacuum pumps are used to simulate various operating conditions by controlling the intake air flow. This allows engineers to fine-tune the engine’s performance, optimize fuel-air mixture ratios, and assess the engine’s efficiency and emissions characteristics.

4. HVAC Systems:

– Climate Control: Roots vacuum pumps are employed in automotive HVAC (Heating, Ventilation, and Air Conditioning) systems to facilitate the flow and distribution of air. These pumps help regulate the operation of HVAC components, such as air blend doors and vacuum actuators, ensuring proper air temperature and direction control inside the vehicle cabin.

5. Fuel System and Turbocharging:

– Fuel Transfer and Evacuation: In automotive fuel systems, Roots vacuum pumps are used for fuel transfer and evacuation. These pumps assist in priming the fuel system, removing air pockets, and ensuring the continuous flow of fuel to the engine, enhancing the overall fuel delivery performance.

– Turbocharger Control: Roots vacuum pumps are sometimes employed in turbocharged engines to control the actuation of variable geometry turbochargers (VGT). These pumps provide the necessary vacuum signals to actuate the VGT mechanism, optimizing turbocharger performance and enhancing engine efficiency.

6. Other Applications:

– Electric Vehicle Battery Systems: In electric vehicles, Roots vacuum pumps are utilized to create a vacuum in battery enclosures, helping to maintain the integrity and safety of the battery system by preventing the ingress of moisture, dust, or contaminants.

– Engine Air Induction: Some automotive engines utilize Roots-type superchargers or twin-screw superchargers, which are essentially positive displacement Roots vacuum pumps operating in reverse. These devices compress and force air into the engine’s intake manifold, resulting in increased engine power and performance.

In summary, Roots vacuum pumps find extensive utilization in the automotive industry. They play a crucial role in brake systems, emissions control, engine testing and development, HVAC systems, fuel systems, turbocharging, electric vehicle battery systems, and engine air induction. By contributing to braking performance, emissions reduction, engine calibration, HVAC functionality, fuel system efficiency, turbocharger control, battery system safety, and engine power enhancement, Roots vacuum pumps contribute significantly to the overall operation and performance of automotive systems and components.

roots vacuum pump

What Are the Primary Applications of Roots Vacuum Pumps?

Roots vacuum pumps, also known as Roots blowers or rotary lobe pumps, are utilized in a variety of industrial applications where efficient and reliable vacuum generation is required. Here’s a detailed explanation of the primary applications of Roots vacuum pumps:

1. Chemical Processing: Roots vacuum pumps find extensive use in the chemical processing industry. They are employed for processes such as vacuum distillation, solvent recovery, drying, and degassing. Their high pumping speed and ability to handle corrosive gases make them suitable for handling various chemical vapors and byproducts.

2. Pharmaceuticals: In the pharmaceutical industry, Roots vacuum pumps are utilized for applications such as vacuum drying, tablet coating, freeze drying, and vacuum packaging. Their oil-free operation ensures a clean and contaminant-free vacuum environment, which is crucial for pharmaceutical manufacturing processes.

3. Food Processing: Roots vacuum pumps play a significant role in the food processing industry. They are employed for vacuum packaging, vacuum cooling, and vacuum drying of food products. The oil-free operation of Roots vacuum pumps ensures food safety and eliminates the risk of contamination.

4. Environmental Technology: Roots vacuum pumps are utilized in environmental technology applications, including wastewater treatment, biogas processing, and air pollution control. They are employed to extract gases, control emissions, and facilitate the treatment and purification of air and water.

5. Semiconductor Manufacturing: In the semiconductor industry, Roots vacuum pumps are used for processes such as ion implantation, physical vapor deposition (PVD), chemical vapor deposition (CVD), and etching. Their high pumping speed and oil-free operation are crucial for maintaining clean vacuum conditions required in semiconductor fabrication.

6. Packaging and Printing: Roots vacuum pumps are employed in packaging and printing applications. They are used for vacuum packaging of products, vacuum forming of packaging materials, and in printing presses for paper handling and ink transfer.

7. Automotive Industry: Roots vacuum pumps find application in the automotive industry for processes such as brake system vacuum assist, crankcase ventilation, and emissions control systems. They help create vacuum conditions required for the operation of various automotive systems.

8. Research and Laboratory: Roots vacuum pumps are utilized in research laboratories and scientific facilities for a wide range of applications. They are used in vacuum ovens, freeze dryers, vacuum filtration, electron microscopy, surface analysis, and other laboratory processes that require controlled vacuum environments.

9. Energy Industry: In the energy sector, Roots vacuum pumps are used for applications such as steam turbine condenser air extraction, transformer drying, and vacuum impregnation of electrical components. They help maintain proper vacuum conditions for efficient and reliable operation of energy systems.

These are some of the primary applications where Roots vacuum pumps are commonly used. Their high pumping speed, large gas handling capacity, oil-free operation, reliability, and versatility make them suitable for a wide range of industrial processes that require efficient and reliable vacuum generation.

China Hot selling High Vacuum Degree Vacuum System Vacuum Pump with Roots Pump   with Hot selling	China Hot selling High Vacuum Degree Vacuum System Vacuum Pump with Roots Pump   with Hot selling
editor by CX 2024-04-03