Customized support: OEM, ODM
Model Number: 2LG730-7AH37
Power Source: Electric
Structure: Single-stage Pump
Usage: Air Pump
Application: Sewage
Frequency: 50 Hz
Net Weight: 43kg
Max airflow: 247CFM
Inlet/outlet diameter: 2 inch
Max Vacuum: -260mbar
Max Pressure: 290mbar
Speed: 2800RPM
Warranty: 1 Year
Packaging Details: wooden case
Port: HangZhou
High Pressure Air Blowers Features:Easy to Install; Well-assembled, CZPT high pressure blowers can be installed used at any time, either horizontally or vertically, for air compressing or vacuum and application.
Ultra-quiet; Direct drive by low-noise motor and built-in silencer are used to reduce the noise produced by running blowers.
No oily odor, Environmental protection; The blade does not contact with any other parts when rotating, free of lubrication and ensuring blowers free from contamination.
High Quality; The high precision processing and testing equipment and technologies enable all parts to conform to the strictest quality requirements, with IP 55 protection and insulation class F and H, which greatly reduce many kinds of breakdown. Since the motor and blower are separated by bearing, foreign matters can be prevented from entering. To ensure the quality, each blower has been tested strictly before delivery besides 3C, CE and ISO certifications.
High Performance; High compression rate, Low temperature of bearing rotation, Long longevity of lubricant, Easy to maintain except blade, CZPT high pressure blowers have no any parts move, highly reliable and almost maintenace-free. Besides, the unique precise outside bearing with excellent heat radiation is adopted to enable the above features.
Operational Principles of High Pressure Blowers:
When the blade of high pressure air blowers rotates, the wind vane causes gases to move forward and outward under centrifugal force, producing a series of spiry movements.
The air between impeller blades speeds up rotation and the gases outside the pump body are pushed into side slot (through inlet), The gases are compressed upon entering side channel, and go back between impeller blades for another speeding-up rotation.
When air goes through blade and side slot along a spiry track, each blade increases its compressing and speeding-up level. As the blade rotates, the kinetic energy of gases is increased, which in turn increases the pressure of gases that go through the side channel.
When air arrives the connection between side slot and release flange (the side channel becomes narrow at the outlet), gases will be immediately extruded out of vanes and released from the pump body through silencer at the outlet.
| Model | 2LG730-7AH37 | |
| Frequency | 50Hz | 60Hz |
| Rated Power | 4KW | 4.6KW |
| Rated Voltage | 345 – 415 / 600 – 690 V | 380 – 480 / 660 – 720 V |
| Rated Current | 9.5 / 5.5 A | 9.5 / 5.5 A |
| Net Weight | 43kg | |
| Noise | 70db | 73db |
| Max Airflow | 420m³/h | 500m³/h |
| Max Vacuum | -260mbar | -260mbar |
| Max Compressor | 290mbar | 280mbar |
Oil seal
Maintenance-free shaft seal is used to separate motor from blower unit.
HousingBlower and motor housing are made of die-cast aluminum alloys ADC12. It is beautiful, light and convenient to carry.
Sliencer
Sliencers are installed in both inlet and outlet to reduce noise.
Related ProductsWe have a good variety of models and sizes to meet your different needs. We look forward to your specific enquiries.
Packing & DeliveryHigh Pressure Air Blowers Package
Standard package: carton box or wooden case
Packing: 1 set to a carton box or wooden case
Note: there is a extra cost for export wooden case
Shipping methods:
We offer kinds of shipping methods as below:
-Fastest delivery but expensive freight, such as express
-Faster delivery but cheaper freight, such as air cargo
-Cheapest freight but slower delivery, such as by sea
CertificationsOur CompanyZheJiang SOP Precision Intelligent Manufacturing Technology Co., Ltd.Our company (sop group) is 1 of the top 3 manufacturers of high pressure blowers and roots blowers with well-equipped testing facilities and strong technical force.
Parts ProcessingFinished ProductsParts WarehouseWith a wide range, good quality, reasonable prices and practical designs, our products are extensively used in wood-working machinery, PCB products machinery, Food & Beverage, CZPT aerator, Gas analysis, Industrial vacuum cleaners/ central extraction systems, Printing & Paper industry, Textile, Plastic products machinery and sewage treatment and so on.
Hannover Messe 2018Date: April, 24, 2018 – April, 27, 2018
Exhibit: high pressure blowers and position sensors
Chinaplus 2018Date: April, 24, 2018 – April, 27, 2018
Exhibit: high pressure blowers and position sensors
Our Service1. Experienced factory; With over 15 years of experience in air blower industry2. OEM highly welcome; With the strong R&D team, we can meet various needs3. Rapid reply; Any inquiry or question will be replied within 24 hours4. Strict quality control; Every product will be checked before shipment5. Competitive price and considerate service; Factory direct sale with competitive price
FAQQ1: Is it a vacuum pump?
A1: Yes, it is. CZPT blowers are both vacuum and compressor blower.
Q2: Are you a manufacturer or trading company?
A2: We are absolutely a manufacturer and looking for wholesalers or distributors through the world.
Q3: Can you also supply centrifugal blowers?
A3: Yes, we can. Welcome to send inquiries to us.
How to install a vacuum pump
A vacuum pump creates a relative vacuum within a sealed volume by drawing gas molecules from the sealed volume. Vacuum pumps can be used in a variety of industrial applications. They also offer various lubrication options. If you are considering purchasing, please understand its functions and features before purchasing. 
How it works
The working principle of a vacuum pump is called gas transfer. The principle can be further divided into two basic categories: positive displacement and momentum transfer. At high pressure and moderate vacuum, gas molecules collide and move and create a viscous flow. At higher vacuum levels, gas molecules separate to create molecular or transitional flows.
Another principle of vacuum pumps is fluid-tightness. There are two main types of seals: rotary seals and screw seals. Rotary seals prevent liquid leakage, while screw seals only allow liquids to flow out at higher pressures. Some pumps may not use the third seal.
The flow rate of the vacuum pump determines the machine’s ability to pump a certain amount of material. A higher pumping speed will shorten the drain time. Therefore, the mass flow of the vacuum pump must be carefully considered. The speed and type of vacuum must also be considered.
The working principle of a vacuum pump is to push gas molecules from a high-pressure state to a low-pressure state. This creates a partial vacuum. There are many different types of vacuum pumps, each with different functions. Some are mechanical, some are chemical. In either case, their function is the same: to create a partial or complete vacuum. Vacuum pumps use a variety of technologies and are sized according to the application. Proper sizing is critical for optimum efficiency.
Gas transfer pumps use the same principles as vacuum pumps but use different technology. One of the earliest examples is the Archimedes spiral. Its structure consists of a single screw inside a hollow cylinder. More modern designs use double or triple screws. The rotation of the screw causes gas molecules to be trapped in the cavity between the screw and the housing. The fluid is then discharged at slightly above atmospheric pressure. This difference is called the compression ratio.
Another type of vacuum pump is a diffusion pump. Its main use is industrial vacuum processing. It is used in applications such as mass spectrometry, nanotechnology and analytical instrumentation. These pumps are generally inexpensive to purchase and operate.
Apply
Vacuum pumps are essential for many scientific and industrial processes. They are used in the production of vacuum tubes, CRTs, lamps and semiconductor processing. They can also be used to support mechanical equipment. For example, they can be mounted on the engine of a motor vehicle. Likewise, they can be used to power hydraulic components of aircraft. Among other uses, the vacuum pump helps calibrate the gyroscope.
Vacuum pumps are widely used in the pharmaceutical industry and are one of the largest users of this technology. They help deal with hazardous materials and eliminate waste quickly. They are also used in power jets, dump fuel tanks and rear doors, among others. However, they are sensitive to contamination and should only be used in environments where leaks can be prevented. Therefore, choosing the right fluid for the application is very important.
The most popular type of vacuum pump is the rotary vane pump. These pumps are known for their high pumping speed and low pressure. Their efficient pumping capacity allows them to reach pressures below 10-6 bar. Additionally, they are usually oil-sealed and have excellent vacuuming capabilities.
Vacuum pumps are often used to remove air from closed systems. They create a vacuum by reducing the density of the air in the compressed space. This is done by using the mechanical force energy generated by the rotating shaft. When the pump is under pressure, it converts this energy into pneumatic power. When the pressure is different, the energy produced depends on the volume of the gas and the pressure difference between the inner and outer atmospheres.
Vacuum pumps are also used in the manufacture of solar cells. They are used in the manufacture of solar cells, including ingot casting processes as well as cell and module processes. The design of the vacuum system plays an important role in reducing the cost of the process, thus making it profitable. Due to their low maintenance costs, they are an invaluable tool for making solar cells.
Vacuum pumps are widely used in many applications. In addition to industrial and research uses, they are also used in water remediation. 
Oil Lubrication Option
Vacuum pumps are available in a variety of oil lubrication options. Choosing the right lubricant can help protect your vacuum pump and maximize its performance. Different base oils may contain different additives, such as antioxidants, and some contain additional additives for specific purposes. You should choose an oil with the right concentration of these additives for optimal lubrication of your vacuum pump.
Vacuum pumps are usually lubricated with paraffinic mineral oil. However, this type of lubricant evaporates as the temperature increases. To minimize evaporative losses, choose a lubricant with low vapor pressure. Also, you should choose lubricants that are resistant to extreme temperatures. Extreme temperatures can put extra stress on the oil and can even significantly shorten the life of the oil.
In terms of viscosity, synthetic oils are the best choice for vacuum pumps. These types of oils are designed to resist gas dissolution and are more resistant to corrosion. Therefore, synthetic oils are ideal for handling aggressive substances. Whether or not your pump needs lubrication, choosing a quality product is important.
The vacuum pump oil should be changed periodically according to the manufacturer’s recommendations. If you use a filter, you should also change the oil as soon as the filter reaches the end of its life. Unplanned oil changes will eventually cause the vacuum pump to not reach its maximum vacuum capacity.
You can buy vacuum pump oil from vacuum pump manufacturers or other suppliers. These options are available in a variety of sizes, and labels can be customized. The oil should be designed for the pump. However, you should check the manufacturer’s recommendations to avoid buying the wrong type.
If you choose to use a synthetic oil, it is important to use a good quality oil. It helps the pump work more efficiently and prolong its life. 
Install
After choosing a suitable location, the next step is to install the pump. First, place the pump on a flat surface. Then, screw the pump onto the motor body above the check valve. Make sure the accessories are wrapped with sealing tape and secured with screws. The direction of gas inflow and outflow is indicated by arrows on the pump. The direction of rotation around the pump is also shown.
During commissioning, check the operation of each part of the pump. If the pump is equipped with a pipe connection, the pipe should be the same size and shape as the pump flange. Also, make sure that the piping does not cause any pressure drop. In addition, the first three weeks of operation require the installation of protective nets at the suction ports.
When selecting a pump, consider the back pressure of the system. Too much back pressure will affect the capacity of the vacuum pump. Also, check the temperature of the seal. If the temperature is too high, the seal may be damaged. It could also be due to a partially closed valve in the recirculation line or a clogged filter. Circulation pumps and heat exchangers should also be checked for fouling.
The vacuum pump is usually installed in the chassis area of the car. They can be mounted next to the engine or on a lower support frame. They are usually fastened to the bracket using suitable shock absorbers and isolating elements. However, before installing the vacuum pump, be sure to check the vacuum pump’s wiring harness before connecting it to the vehicle.
In many experimental setups, a vacuum pump is essential. However, improperly installed vacuum pumps can expose users to harmful vapors and chemicals. Appropriate plugs and belt guards should be installed to prevent any accidental chemical exposure. It is also important to install a fume hood for the pump.
In most cases, vacuum pumps come with installation manuals and instructions. Some manufacturers even offer start-up assistance if needed.
editor by czh