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1. Optimized structural design
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.
2.Strict manufacturing standards
Following CE and ISO9001 international quality systems, with processing accuracy reaching the micrometer level (oil-free scroll air compressors) to ensure stable operation.
High Environmental Protection and Safety Oil-free series products: Avoid oil pollution, meeting the hygiene standards of medical, food and other industries; low-noise and low-vibration designs (such as two-stage compression models and vacuum pumps) reduce the impact on the working environment.
High protection level: Some models have a protection level of IP65 (such as oil-cooled permanent magnet variable frequency air compressors), which can be used in humid environments and have strong adaptability.
2. Intelligence and Convenience Intelligent control
Some models are equipped with IoT transmission and Chinese-English interfaces (such as two-stage compression permanent magnet variable frequency air compressors), making operation simple.
Low maintenance cost: Compact structure (vacuum pumps), few external connections (dry oil-free air compressors), and some models have built-in lubrication storage devices, reducing maintenance frequency and costs.
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1. Optimized structural design
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.
2.Strict manufacturing standards
Following CE and ISO9001 international quality systems, with processing accuracy reaching the micrometer level (oil-free scroll air compressors) to ensure stable operation.
High Environmental Protection and Safety Oil-free series products: Avoid oil pollution, meeting the hygiene standards of medical, food and other industries; low-noise and low-vibration designs (such as two-stage compression models and vacuum pumps) reduce the impact on the working environment.
High protection level: Some models have a protection level of IP65 (such as oil-cooled permanent magnet variable frequency air compressors), which can be used in humid environments and have strong adaptability.
2. Intelligence and Convenience Intelligent control
Some models are equipped with IoT transmission and Chinese-English interfaces (such as two-stage compression permanent magnet variable frequency air compressors), making operation simple.
Low maintenance cost: Compact structure (vacuum pumps), few external connections (dry oil-free air compressors), and some models have built-in lubrication storage devices, reducing maintenance frequency and costs.
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Two-stage compression air compressors, with their high efficiency, energy savings, stable pressure and high exhaust quality, are suitable for multiple fields:
· Manufacturing industry: Used in mechanical processing, assembly lines, metal processing, etc., to drive pneumatic tools and ensure production accuracy and efficiency.
· Construction and mining industry: Provide power for heavy equipment such as rock drills and pneumatic picks, and adapt to harsh working environments.
· Energy industry: Applied in wellbore cleaning in oil and gas extraction, as well as pneumatic control and equipment maintenance in the power industry.
· Medical industry: Provide sterile compressed air with the cooperation of filtering equipment, which is used for dental tools, ventilators, etc.
· Food and pharmaceutical industry: Meet the oil-free and clean requirements of food packaging and pharmaceutical production.
· Transportation industry: Serve as the air source for automobile maintenance tools and rail transit maintenance equipment.
· Textile and electronics industry: Ensure textile quality and meet the requirements of high-purity compressed air in electronic manufacturing.
· Agriculture and environmental protection industry: Applied in agricultural seeding, spraying and aeration systems for sewage treatment.
Two-stage compression air compressors, with their high efficiency, energy savings, stable pressure and high exhaust quality, are suitable for multiple fields:
· Manufacturing industry: Used in mechanical processing, assembly lines, metal processing, etc., to drive pneumatic tools and ensure production accuracy and efficiency.
· Construction and mining industry: Provide power for heavy equipment such as rock drills and pneumatic picks, and adapt to harsh working environments.
· Energy industry: Applied in wellbore cleaning in oil and gas extraction, as well as pneumatic control and equipment maintenance in the power industry.
· Medical industry: Provide sterile compressed air with the cooperation of filtering equipment, which is used for dental tools, ventilators, etc.
· Food and pharmaceutical industry: Meet the oil-free and clean requirements of food packaging and pharmaceutical production.
· Transportation industry: Serve as the air source for automobile maintenance tools and rail transit maintenance equipment.
· Textile and electronics industry: Ensure textile quality and meet the requirements of high-purity compressed air in electronic manufacturing.
· Agriculture and environmental protection industry: Applied in agricultural seeding, spraying and aeration systems for sewage treatment.
The following are the steps for the operation and use of the air compressor:
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.
The following are the steps for the operation and use of the air compressor:
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.
Question: Why customer choose us?
Answer: Luoyou Compressor (Shanghai) Co., Ltd. is a professional manufacturer for air compressor.We have more than 10 years experience in producing and exporting screw air compressor.
Question: How long could your screw air compressor be used?
Answer: screw air compressor can work well more than 15 years.
Question: What's payment term?
Answer:We accept T/T, L/C, D/P, Western Union, Paypal, and Credit Cards.
Question: How about your customer service?
Answer: 24 hours on-line service available.
Question: Why customer choose us?
Answer: Luoyou Compressor (Shanghai) Co., Ltd. is a professional manufacturer for air compressor.We have more than 10 years experience in producing and exporting screw air compressor.
Question: How long could your screw air compressor be used?
Answer: screw air compressor can work well more than 15 years.
Question: What's payment term?
Answer:We accept T/T, L/C, D/P, Western Union, Paypal, and Credit Cards.
Question: How about your customer service?
Answer: 24 hours on-line service available.
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 | ||||||
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 | ||||||