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Dual-Stage Energy-Saving Permanent Magnet Compressor


Two-stage compression models have a lower compression ratio, less back-flow loss, and larger exhaust volume; water-lubricated oil-free air compressors save about 10% more energy than dry oil-free models.

Strong Reliability and Durability Upgraded key components: Using imported high-quality bearings (vacuum pumps) and thickened rotor coatings (dry oil-free air compressors) to extend the service life of the equipment.
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Characteristic Advantages


Superior Energy Efficiency

The combination of two-stage compression and permanent magnet motor technology delivers significant energy savings compared to traditional compressors. By minimizing back-flow loss and mechanical friction, the system operates more efficiently even under continuous use.


Strong Reliability & Durability

Key components are upgraded for longevity: imported high-quality bearings ensure smooth rotor operation, while thickened rotor coatings resist wear and corrosion. These enhancements allow the compressor to maintain consistent performance for years.


Strict Quality Compliance

The compressor adheres to CE and ISO9001 international quality standards, with processing accuracy reaching the micrometer level. This compliance guarantees that the equipment meets rigorous industrial requirements for safety and performance.


High Environmental Adaptability

Some models feature an IP65 protection level, making them suitable for humid or dusty environments—common in construction, mining, and outdoor industrial sites. Additionally, low-noise and low-vibration designs reduce disruption to the working environment.


User-Friendly Intelligence

The IoT-enabled control system and simplified interface make operation accessible to users with varying expertise. Low maintenance requirements also lower operational costs, making the compressor a cost-effective long-term investment.


Dual-Stage Energy-Saving Permanent Magnet Compressor

Dual-Stage Energy-Saving Permanent Magnet Compressor


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Applications


Manufacturing Industry

In mechanical processing and assembly lines, the compressor drives pneumatic tools (e.g., drills, grinders) and maintains stable air pressure to ensure production accuracy and efficiency.

It provides reliable power for heavy equipment like rock drills and pneumatic picks, withstanding harsh conditions such as dust, vibration, and temperature fluctuations.


Medical & Food-Pharma Industries

When paired with filtering equipment, the compressor delivers sterile compressed air. Critical for dental tools, ventilators (medical), and food packaging (food-pharma), where oil contamination is strictly prohibited.


Energy & Electronics Industries

In the energy sector, it supports wellbore cleaning in oil and gas extraction and pneumatic control in power plants. For electronics manufacturing, it supplies high-purity compressed air to prevent damage to sensitive components.

The stable airflow and low oil risk ensure textile quality during weaving and finishing processes, avoiding oil stains that could ruin fabrics.



 Operation


Preparation Before Booting


Environmental and equipment inspection

ensure that the air compressor is installed on a stable and well-ventilated ground, that there are no debris and obstacles around, and that the ambient temperature and humidity are within the allowable range of the equipment. Check whether the various parts of the air compressor are operating normally, such as the compressor, motor, cooling system, protective devices, etc., are intact and complete, and whether the connecting parts are loose.


Power supply and circuit inspection

check whether the power supply of the air compressor is normal, whether the voltage is within the rated range, plus or minus 5%, and ensure that it is well grounded. Check whether the power cord is damaged, aging, etc., and replace it in time if there is a issue.


Oil level and quality check

Keep the lubricating oil in the oil cylinder within the scale range, and check that the oil volume in the oil injector should not be lower than the scale mark value.


Valves and filters inspection

Check whether the valve on the air supply pipe is open and whether the manual drain valve is closed. Clean or replace the air filter element to prevent dust and impurities from entering the air compressor.

 

Start the air compressor


Turn on the power

First check whether the running status light of the air compressor is normal, press the start switch of the air compressor to start the compressor operation.


Check the operating status

Once the air compressor is started, immediately check whether the running sound is within the range, or any abnormal vibration, impact or stuck, especially the loading sound. Manually unload and unload several times to check whether the loading and unloading is correctly performed.


Observe the pressure change

by observing the pressure gauge, wait for the air compressor to rise to the normal operating pressure, in the process of pressurization, pay attention to observe the change of the pressure gauge, if the pressure rises slowly, or exceeds the rated range, you need to check and adjust the operating status and parameters of the air compressor in time.

 

Considerations in operation

Parameter monitoring: Always pay attention to the readings of various instruments, such as pressure gauges, thermometers, ammeters, etc., and adjust them accordingly. Check the readings on the display every hour and keep a record. When the automatic running light is lit, it means that the start and stop of the loading and unloading motor are automatically controlled by the build-in computer.


Drainage and leakage inspection

Check the discharge of condensate during operation every hour, and check whether there is running, rising, dripping and leaking every day, including the leakage of oil, gas and possible water.


Component inspection

Always pay attention to the surface temperature of the air compressor motor to avoid overheating of the motor. Pay attention to vibration and noise, and stop the machine for inspection in time if there is any abnormality. Clean the motor fins and ventilation hood regularly to ensure that the motor dissipates heat well.


Shutdown steps


Unloading and shutdown

When the air outlet is closed or needs to be stopped, the air gate should be closed, the air intake should be stopped, and the stop button or switch of the air compressor should be pressed to stop the operation of the compressor.


Cut off the power supply

After the air compressor stops running normally, disconnect the power supply and ensure that maintenance and repair are carried out safely.


Discharge of condensate

Discharge of condensate from gas-water separators, buffer tanks, etc.



FAQ


Why should we choose your Advanced Dual-Stage Permanent-Magnet Screw Compressor?

We are a professional manufacturer with over 10 years of experience in producing and exporting screw air compressors. Our products integrate advanced two-stage compression and permanent magnet motor technology, ensuring reliability, efficiency, and compliance with global quality standards.


How long can the compressor operate effectively?

With upgraded components like high-quality bearings and thickened rotor coatings, the compressor can maintain optimal performance for more than 15 years under normal use and regular maintenance.


What after-sales support do you provide?

We offer 24-hour online customer service to address technical issues, maintenance questions, or operational concerns. Our team provides timely assistance to minimize downtime.


Is the compressor suitable for outdoor or humid environments?

Yes—selected models have an IP65 protection level, which prevents water and dust ingress, making them ideal for outdoor construction sites, mining operations, or humid industrial facilities.



Details


Intelligent Operation & Control

Equipped with IoT transmission capabilities and a bilingual (Chinese-English) interface, the compressor enables remote monitoring and simplified operation. Users can track real-time performance data, adjust settings, and receive alerts for abnormal conditions—all through an intuitive control panel. This intelligence reduces the need for constant on-site supervision, improving operational convenience.


Comprehensive Performance Monitoring

The system continuously monitors key parameters such as air pressure, motor temperature, and airflow. If values deviate from the optimal range, the compressor automatically adjusts its operation or triggers protective measures to prevent damage. This proactive monitoring ensures consistent performance and extends equipment life.


Low-Maintenance Design

With a compact structure, minimal external connections, and built-in lubrication storage devices, the compressor requires less frequent maintenance. Components like high-quality bearings and thickened rotor coatings are designed for durability, further reducing the need for part replacements or repairs.


Model

Power (KW)

Pressure

(Bar)

Output m³/min

Dia.

Noise (dB)

Outline(MM)

Wt(KG)

Permanent   Magnet   Variable   Frequency   Models

LY-10PV

7.5

8

1.2

G1/2

66±2

800*720*950

240

10

1.0

13

0.8

LY-15PV

11

8

1.6

G3/4

68±2

950*800*1070

405

10

1.4

13

1.2

LY-20CV

15

8

2.4

G3/4

68±2

950*800*1070

430

10

2.0

13

1.7

LY-25CV

18.5

8

2.9

G3/4

68±2

950*1100*1110

510

10

2.7

13

2.2

LY-30CV

22

8

3.5

G11/4

69±2

1300*860*1135

540

10

3.2

13

2.9

LY-40CV

30

8

5.0

G11/4

69±2

1300*860*1135

690

10

4.3

13

3.7

LY-50CV

37

8

6.1

G11/2

70±2

1050*1050*1450

750

10

5.7

13

5.1

LY-60CV

45

8

8.0

G2

72±2

1300*1100*1350

920

10

6.8

13

5.8

LY-75CV

55

8

10.1

G2

73±2

1500*1150*1500

1500

10

7.8

13

7.3

LY-100CV

75

8

13.3

G2

75±2

1900*1200*1555

1800

10

12.2

13

9.0

LY-125CV

90

8

16.3

G2

75±2

2100*1250*1700

2200

10

14.6

13

12.3

LY-150CV

110

8

20.6

DN65

75±2

2300*1650*2000

2900

10

17.0

13

14.2

LY-180CV

132

8

24.0

DN65

75±2

2550*1650*2000

3100

10

20.6

13

16.5

LY-220CV

160

8

27.0

DN80

75±2

2550*1650*2000

3300

10

23.2

13

19.7

LY-250CV

185

8

30.2

DN80

78±2

2800*1750*2100

3500

10

27.0

13

22.5

LY-300CV

220

8

36.4

DN100

78±2

3200*1950*2150

4500

10

33.1

13

38.5

LY-340CV

250

8

42.5

DN100

78±2

3200*1950*2150

4600

10

38.8

13

34.6

LY-420CV

315

8

55.6

DN100

80±2

3200*1950*2150

7000

10

49.6

13

42.7

LY-480CV

355

8

65.0

DN100

82±2

4300*1650*2000

7500

10

55.0

13

48.0

LY-540CV

400

8

72.0

DN100

83±2

4300*1950*2000

8100

10

62.0

13

52.5


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