Product Description

CE Approved Dental Air Compressor (DA7004)

Model: DA7004

Voltage: 100-240V

Hz: 50/60

Power: 3000KW [4HP]

Max air flow: 608L/min [21.47CFM]

Air flow @7bar: 200L/min [7.06CFM]

Max pressure: 8bar [116psi]

Tank: 100L [22gallon]

Net weight: 95kg [209.4lbs]

Gross weight: 114.5kg [252.4lbs]

Noise level: ≤ 70dB(A)

Max current: 13.6A

Dimensions: 1070*460*750mm


(1) Lightweight;

(2) Maintenance free;

(3) Pressure adjustable;

(4) Ultra quiet;

(5) Thermally protected;

(6)Operating safely

(7) Auto stop and restart.


1. Oil free: Do not need any lubricated oil, and harmless to the human body.

2. Super silent: Noise level lower than 56dB(a) to reduce noise pollution.

3. Multi-phase filteration: Advanced multi-phase filtration to ensure extremely clean air, and lengthen service life.

4. Safety using: Air compressor motors equipped with thermal prevention device to avoid overheating and protect motors.

5. Clean tank: All air receiver tanks have internal epoxy coating applied to avoid corrosion.

6. Automatic adjustment: High quality pressure switch used to control the power of air compressor automatically by adjustment of pressure level.

7. Pressure adjustment: Working pressure could be adjusted to meet the demand of different supporting equipments.

8. High durability: Serviceable time exceeds 15, 000 hours.

9. Simple operation: Using directly when connecting with power.

10. Easy maintanance: No need any lubricated oil.

11. Warranty: 2 years.

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Add: NO108 Xingpu Road, Lujia Town, HangZhou City, ZheJiang Province, China

Model DA7001 DA7002 DA7003 DA7004 DA7005
Voltage/Hz V 100-240 100-240 100-240 100-240 100-240
Hz 50/60 50/60 50/60 50/60 50/60
Power HP 1 2 3 4 5
KW 0.75 1.5 2.25 3 3.75
Max Air Flow L/min 152 304 456 608 760
CFM 5.37 10.74 16.10 21.47 26.84
Air Flow @7bar L/min 50 100 150 200 250
CFM 1.77 3.53 5.3 7.06 8.83
Max. Pressure Bar 8 8 8 8 8
psi 116 116 116 116 116
Tank L 30 50 70 100 140
Gallon 6.6 11.0 15.4 22.0 30.8
Net Weight Kg 29.5 50 78 95 110
Lbs 65.0 110.2 172 209.4 242.5
Gross Weight Kg 33 62.5 90 114.5 148
Lbs 72.8 137.8 198.4 252.4 326.3
Noise Level dB(A) ≤70 ≤70 ≤70 ≤70 ≤70
Max current A 3.4 6.8 10.2 13.6 17
Dimensions mm 410×410×650 710×425×730 920×425×725 1070×460×750 1430×460×730
inch 16.1×16.1×25.6 28×16.7×28.7 36.2×16.7×28.5 42.1×18.1×29.5 56.3×18.1×28.7


Lubrication Style: Oil-free
Cooling System: Air Cooling
Cylinder Arrangement: Parallel Arrangement
Cylinder Position: Horizontal
Structure Type: Closed Type
Compress Level: Single-Stage


air compressor

How does variable speed drive technology improve air compressor efficiency?

Variable Speed Drive (VSD) technology improves air compressor efficiency by allowing the compressor to adjust its motor speed to match the compressed air demand. This technology offers several benefits that contribute to energy savings and enhanced overall system efficiency. Here’s how VSD technology improves air compressor efficiency:

1. Matching Air Demand:

Air compressors equipped with VSD technology can vary the motor speed to precisely match the required compressed air output. Traditional fixed-speed compressors operate at a constant speed regardless of the actual demand, leading to energy wastage during periods of lower air demand. VSD compressors, on the other hand, ramp up or down the motor speed to deliver the necessary amount of compressed air, ensuring optimal energy utilization.

2. Reduced Unloaded Running Time:

Fixed-speed compressors often run unloaded during periods of low demand, where they continue to consume energy without producing compressed air. VSD technology eliminates or significantly reduces this unloaded running time by adjusting the motor speed to closely follow the air demand. As a result, VSD compressors minimize energy wastage during idle periods, leading to improved efficiency.

3. Soft Starting:

Traditional fixed-speed compressors experience high inrush currents during startup, which can strain the electrical system and cause voltage dips. VSD compressors utilize soft starting capabilities, gradually ramping up the motor speed instead of instantly reaching full speed. This soft starting feature reduces mechanical and electrical stress, ensuring a smooth and controlled startup, and minimizing energy spikes.

4. Energy Savings at Partial Load:

In many applications, compressed air demand varies throughout the day or during different production cycles. VSD compressors excel in such scenarios by operating at lower speeds during periods of lower demand. Since power consumption is proportional to motor speed, running the compressor at reduced speeds significantly reduces energy consumption compared to fixed-speed compressors that operate at a constant speed regardless of the demand.

5. Elimination of On/Off Cycling:

Fixed-speed compressors often use on/off cycling to adjust the compressed air output. This cycling can result in frequent starts and stops, which consume more energy and cause mechanical wear. VSD compressors eliminate the need for on/off cycling by continuously adjusting the motor speed to meet the demand. By operating at a consistent speed within the required range, VSD compressors minimize energy losses associated with frequent cycling.

6. Enhanced System Control:

VSD compressors offer advanced control capabilities, allowing for precise monitoring and adjustment of the compressed air system. These systems can integrate with sensors and control algorithms to maintain optimal system pressure, minimize pressure fluctuations, and prevent excessive energy consumption. The ability to fine-tune the compressor’s output based on real-time demand contributes to improved overall system efficiency.

By utilizing variable speed drive technology, air compressors can achieve significant energy savings, reduce operational costs, and enhance their environmental sustainability by minimizing energy wastage and optimizing efficiency.

air compressor

How are air compressors employed in the mining industry?

Air compressors play a crucial role in the mining industry, providing reliable and efficient power for various mining operations. Here are some common applications of air compressors in mining:

1. Exploration and Drilling:

Air compressors are used during exploration and drilling activities in the mining industry. Compressed air is used to power drilling rigs, pneumatic hammers, and other drilling equipment. The high-pressure air generated by the compressor helps in drilling boreholes, extracting core samples, and exploring potential mineral deposits.

2. Ventilation and Air Quality Control:

Air compressors are employed in underground mining to provide ventilation and control air quality. Compressed air is used to operate ventilation fans and air circulation systems, ensuring adequate airflow and removing harmful gases, dust, and fumes from the mining tunnels and work areas.

3. Material Conveyance:

In mining operations, air compressors are used for material conveyance. Pneumatic systems powered by air compressors are utilized to transport materials such as coal, ore, and other minerals. Compressed air is used to operate pneumatic conveyors, pumps, and material handling equipment, allowing for efficient and controlled movement of bulk materials.

4. Dust Suppression:

Air compressors are employed for dust suppression in mining areas. Compressed air is used to spray water or other suppressants to control dust generated during mining activities. This helps in maintaining a safe and healthy work environment, reducing the risks associated with dust inhalation and improving visibility.

5. Instrumentation and Control:

Air compressors are used for instrumentation and control purposes in mining operations. Compressed air is utilized to power pneumatic control systems, control valves, and actuators. These systems regulate the flow of fluids, control equipment movements, and ensure the proper functioning of various mining processes.

6. Explosive Applications:

In mining, air compressors are used for explosive applications. Compressed air is employed to power pneumatic tools used for rock fragmentation, such as rock drills and pneumatic breakers. The controlled power of compressed air enables safe and efficient rock breaking without the need for traditional explosives.

7. Maintenance and Repair:

Air compressors are essential for maintenance and repair activities in the mining industry. Compressed air is used for cleaning machinery, removing debris, and powering pneumatic tools for equipment maintenance and repair tasks. The versatility and portability of air compressors make them valuable assets in maintaining mining equipment.

It is important to note that different mining operations may have specific requirements and considerations when selecting and using air compressors. The size, capacity, and features of air compressors can vary based on the specific mining application and environmental conditions.

By utilizing air compressors effectively, the mining industry can benefit from increased productivity, improved safety, and efficient operation of various mining processes.

air compressor

What is the role of air compressor tanks?

Air compressor tanks, also known as receiver tanks or air receivers, play a crucial role in the operation of air compressor systems. They serve several important functions:

1. Storage and Pressure Regulation: The primary role of an air compressor tank is to store compressed air. As the compressor pumps air into the tank, it accumulates and pressurizes the air. The tank acts as a reservoir, allowing the compressor to operate intermittently while providing a steady supply of compressed air during periods of high demand. It helps regulate and stabilize the pressure in the system, reducing pressure fluctuations and ensuring a consistent supply of air.

2. Condensation and Moisture Separation: Compressed air contains moisture, which can condense as the air cools down inside the tank. Air compressor tanks are equipped with moisture separators or drain valves to collect and remove this condensed moisture. The tank provides a space for the moisture to settle, allowing it to be drained out periodically. This helps prevent moisture-related issues such as corrosion, contamination, and damage to downstream equipment.

3. Heat Dissipation: During compression, air temperature increases. The air compressor tank provides a larger surface area for the compressed air to cool down and dissipate heat. This helps prevent overheating of the compressor and ensures efficient operation.

4. Pressure Surge Mitigation: Air compressor tanks act as buffers to absorb pressure surges or pulsations that may occur during compressor operation. These surges can be caused by variations in demand, sudden changes in airflow, or the cyclic nature of reciprocating compressors. The tank absorbs these pressure fluctuations, reducing stress on the compressor and other components, and providing a more stable and consistent supply of compressed air.

5. Energy Efficiency: Air compressor tanks contribute to energy efficiency by reducing the need for the compressor to run continuously. The compressor can fill the tank during periods of low demand and then shut off when the desired pressure is reached. This allows the compressor to operate in shorter cycles, reducing energy consumption and minimizing wear and tear on the compressor motor.

6. Emergency Air Supply: In the event of a power outage or compressor failure, the stored compressed air in the tank can serve as an emergency air supply. This can provide temporary air for critical operations, allowing time for maintenance or repairs to be carried out without disrupting the overall workflow.

Overall, air compressor tanks provide storage, pressure regulation, moisture separation, heat dissipation, pressure surge mitigation, energy efficiency, and emergency backup capabilities. They are vital components that enhance the performance, reliability, and longevity of air compressor systems in various industrial, commercial, and personal applications.

China factory CE Approved Dental Air Compressor (DA7004)   12v air compressorChina factory CE Approved Dental Air Compressor (DA7004)   12v air compressor
editor by CX 2023-10-05

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