China Best Sales CHINAMFG Power Compressor 390cfm 7bar 101psig Air Compressor Powered by CHINAMFG air compressor parts

Product Description

Model                                          MDS390S7C
Compressor Air
delivery
m3/min 11
cu.ft/min 390
Discharge pressure bar                                               7
psig 101
Oil gas tank L 98
Diesel
Engine
Manufacture&Model 4BTA3.9-C130
Cylinder Number 4
Displacement(L) 3.9
Rotation speed(Rmp) Operating 2000
Idle speed(r/min) 1400
Rated power(KW) 96
Lubricating Oil capacity(L) 47
Coolant Capacity(L) 22
Battery 6-QW-342
Others Dimension L(mm) 3590
W(mm) 2180
H(mm) 2218
Weight(kg) 2300

Standard Configuration

Suction valve                                    Lubricating oil filter                           Oil thermostatic valve                                             55°C radiator
 Solenoid valve                                Vertical air/oil tank                                Pressure regular valve                              Air/oil separator                     

  Lubricating oil radiator       Safety valve                                                   Emergency stop button                                 Air filter of engine
 Minimum pressure valve       Lockable battery isolator switch                                                                                                                                                                 
 Air filter of compressor        Vent valve                                                       Powder coated canopy                                           Shuttle valve    
 24V sealed for life maintenance free battery                                Fuel tank for 8 hours running

 

General Features

 

Structure diagram

Feature&Benefit
Feature   Benefit
Pressure selection and control Easy pressure setting
Flow selection and control The working pressure and airflow rate can be adjusted according to the size of air consumption without wasting any diesel
The twin-screw rotor is directly connected with the diesel engine by a highly flexible coupling Outputting more air with less energy consumption, featuring high reliability, longer service life, and low maintenance cost.
The two-stage air filtration system The total efficiency of air filtration reaches 99.8% ensuring the compressor to not be infringed by dust and dirt particles and longer service life of the engine
High-temperature resistance design Able to run for a long time under extreme cold or hot temperature from -20ºC to 50ºC
One-button start, clear operational parameters Operators don’t have to go through long-term professional training, and unattended operations can be achieved.

 

Application areas

 

  Application Nominal Working Pressure(bar) Free Air Delivery Range(m3/min)
General Construction
(building sites, road maintenance, bridges, tunnels, concrete pumping and shotcreting)
Hand-held pneumatic breakers 7~14 5~13
Jack hammers
Air guns
Shotcrete equipment
Pneumatic wrenches
Nut runners
Ground Engineering Drilling 
(basement and foundation excavation for apartment blocks and other buildings)
Pneumatic rock drills 7~17 12~28
Block cutters
Dewatering pumps.
Hand-held pneumatic breakers
Utility, CHINAMFG Blasting
(shipyards, steel construction and large renovation jobs)
Sandblasting
(remove rust, scale, paint)
7~10 10~22
Blast Hole Drilling
(aggregate production for construction stabilization, cement production in limestone quarries and open pit mining)
Rock drills 14~21 12~29
Dewatering pumps
Hand-held breakers
High Pressure Drilling
(drilling for water wells and foundations for high-rise buildings, along with geotechnical/geothermal applications)
Water well drilling 20~35 18~40
 DTH drilling
Rotary drilling

Selection table

Small Series
Small Series FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS55S-7 1.55 55  7 101.5  D902 2925 1650 1200 1200 600
MDS80S-7 2.24 80  7 101.5 D1005 2925 1650 1200 1200 630
MDS100S-7 2.8 100  7 101.5 V1505 2925 1650 1200 1200 640
MDS125S-7 3.5 125  7 101.5 V1505 3065 1800 1500 1350 810
MDS130S-8 3.7 132  8 116 JE493 3065 1800 1500 1350 810
MDS185S-7 5.18 185  7 101.5 JE493 3200 1900 1740 1660 950
MDS185S-10 5.18 185  10 145 JE493 3050 1900 1740 1660 950

Middle Series  (Low&Medium pressure)
Middle Series  (Low&Medium pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS265S-7 7.42 265  7 101.5 JE493 3629 2200 1700 1470 1200
MDS300S-14 8.4 300  14 203 4BTA3.9 3850 2600 1810 2378 1800
MDS350S-10 9.9 354  10 145 4BT3.9 3850 2600 1810 2378 1800
MDS390S-7 11 393  7 101.5 4BTA3.9 3850 2600 1810 2378 1800
MDS390S-13 11 393  13 188.5 QSB4.5 3850 3100 1810 2378 1980
MDS429S-7 12 429  7 101.5 4BTA3.9 3850 2600 1810 2378 1800
MDS429S-14 12 429  14 203 QSB4.5 3850 3100 1810 2378 1980
MDS500S-14 14.1 504  14 203 6BTAA5.9 4550 3600 1810 2378 3100
MDS690S-14 19.3 689  14 203 QSB6.7 4950 3300 2170 2620 3500
MDS720S-10 20.2 721  10 145 QSB6.7 4950 3300 2170 2620 3500
MDS750S-12 21 750  12 174 QSB6.7 4950 3300 2170 2620 3500
MDS786S-10.3 22 786  10.3 149.35 QSB6.7 4950 3300 2170 2620 3500
MDS820S-14 23 821  14 203 6LTAA8.9 5300 4200 2170 2630 5200
MDS850S-8.6 24 857  8.6 124.7 6CTAA8.3 5300 4200 2170 2630 4600
MDS900S-7.1 25.3 904  7.1 102.95 6CTA8.3 5300 4200 2170 2630 4600

Middle Series (Medium&High pressure)
Middle Series (Medium&High pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS460S-17 13 464  17 246.5 6BTAA5.9 4600 3500 1800 2230 3500
MDS620S-17 17.4 621  17 246.5 6LTAA8.9 5300 4200 2170 2630 5200
MDS650S-19 18.2 650  19 275.5 QSL8.9 5300 4200 2170 2630 5200
MDS690S-20.4 19.4 693  20.4 295.8 6LTAA8.9 5300 4200 2170 2630 5200
MDS770S-21 21.6 771  21 304.5 6LTAA8.9 5300 4200 2100 2630 5280
MDS830S-18 23.2 830  18 261 6LTAA8.9 5300 4200 2100 2630 5280
MDS820S-25 23 821  25 362.5 QSM11 5300 4200 2100 2630 5600
MDS860S-20.4/17.3 24.2 864  20.4 295.8 QSL8.9 5300 4200 2100 2630 5280
24.2 864  17.3 250.85
MDS875S-23 24.5 875  23 333.5 QSM11 5300 4200 2100 2630 5600

Large Series    (Low&Medium pressure)
Large Series    (Low&Medium pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS900S-14.2/10.5 25.1 896  14.2 205.9 6LTAA8.9 5300 4200 2100 2630 5280
25.2 900  10.5 152.25
MDS910S-14 25.6 914  14 203 6LTAA8.9 5300 4200 2100 2630 5280
MDS970S-10 27.2 971  10 145 QSL8.9 5300 4200 2100 2630 5280
MDS1011S-8.6 28.3 1011  8.6 124.7 QSL8.9 5300 4200 2100 2630 5280
MDS1054S-12 29.5 1054  12 174 QSL8.9 5300 4200 2100 2630 5280
MDS1250S-8.6 35 1250  8.6 124.7 QSL8.9 5300 4200 2100 2630 5280
MDS1400S-13 40 1400 13 188.5 QSZ13 6200 4700 2100 2630 5800
MDS1600S-10.3 45 1600 10.3 149.35 QSZ13 6200 4700 2100 2630 5800
MDS1785S-13 50 1785 13 188.5 QSZ13 6200 4700 2100 2630 5800
MDS2140S-10 60 2142 10 145 QSZ14 7400 5400 2230 2630 8400

Large Series    (Medium&High pressure)
Large Series    (Medium&High pressure) FAD Pressure Engine model Dimensional Date(mm)
m3/min cfm Bar psig length width height weight(kg)
model with tow bar without tow bar
MDS900S-20 25.3 904  20 290 QSM11 5300 4200 2100 2630 5800
MDS960S-18 26.9 961  18 261 QSM11 5300 4200 2100 2630 5800
MDS1000S-35 28.2 1000 35 507.5 QSZ13 6200 4700 2100 2630 7200
MDS1089S-25 30.5 1089  25 362.5 QSZ13 6200 4700 2100 2630 7200
MDS1200S-24 33.6 1200  24 348 QSZ13 6200 4700 2100 2630 7200
MDS1250S-21 35 1250  21 304.5 QSZ13 6200 4700 2100 2630 7200
MDS1250S-25 35 1250  25 362.5 QSZ13 6200 4700 2100 2630 7200
MDS1250S-30 35 1250 30 435 WP17G770E302 6200 4700 2100 2630 7800
MDS1250S-35 35 1250 35 507.5 WP17G770E302 6200 4700 2100 2630 7800
MDS1250S-40 35 1250 40 580 WP17G770E302 6200 4700 2100 2630 7800
MDS1428S-18 40 1428 18 261 QSZ13 6200 4700 2100 2630 7200
MDS1428S-35 40 1428 35 507.5 TAD1643VE-B 7400 5500 2180 2650 10000
MDS1428S-40 40 1428 40 580 QSK19 7400 5500 2180 2650 10000
MDS1600S-25 44.8 1600 25 362.5 WP17G770E302 7400 5500 2180 2650 10000

GTL Air compressor test system

 

After-sales Service: Online
Warranty: One Year
Lubrication Style: Lubricated
Customization:
Available

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air compressor

Can air compressors be used for painting and sandblasting?

Yes, air compressors can be used for both painting and sandblasting applications. Here’s a closer look at how air compressors are utilized for painting and sandblasting:

Painting:

Air compressors are commonly used in painting processes, especially in automotive, industrial, and construction applications. Here’s how they are involved:

  • Spray Guns: Air compressors power spray guns used for applying paint coatings. The compressed air atomizes the paint, creating a fine mist that can be evenly sprayed onto surfaces. The pressure and volume of the compressed air impact the spray pattern, coverage, and overall finish quality.
  • Paint Mixers and Agitators: Compressed air is often used to power mixers and agitators that ensure proper blending of paint components. These devices use the compressed air to stir or circulate the paint, preventing settling and maintaining a consistent mixture.
  • Airbrushing: Air compressors are essential for airbrushing techniques, which require precise control over airflow and pressure. Airbrushes are commonly used in artistic applications, such as illustrations, murals, and fine detailing work.

Sandblasting:

Air compressors play a crucial role in sandblasting operations, which involve propelling abrasive materials at high velocity to clean, etch, or prepare surfaces. Here’s how air compressors are used in sandblasting:

  • Blasting Cabinets: Air compressors power blasting cabinets or booths, which are enclosed spaces where the sandblasting process takes place. The compressed air propels the abrasive media, such as sand or grit, through a nozzle or gun, creating a forceful stream that impacts the surface being treated.
  • Abrasive Blasting Pots: Air compressors supply air to abrasive blasting pots or tanks that store and pressurize the abrasive media. The compressed air from the compressor enters the pot, pressurizing it and allowing for a controlled release of the abrasive material during the sandblasting process.
  • Air Dryers and Filters: In sandblasting applications, it is crucial to have clean, dry air to prevent moisture and contaminants from affecting the abrasive blasting process and the quality of the surface being treated. Air compressors may be equipped with air dryers and filters to remove moisture, oil, and impurities from the compressed air.

When using air compressors for painting or sandblasting, it is important to consider factors such as the compressor’s pressure and volume output, the specific requirements of the application, and the type of tools or equipment being used. Consult the manufacturer’s guidelines and recommendations to ensure the air compressor is suitable for the intended painting or sandblasting tasks.

Proper safety measures, such as wearing protective gear and following established protocols, should always be followed when working with air compressors for painting and sandblasting applications.

air compressor

How do you maintain proper air quality in compressed air systems?

Maintaining proper air quality in compressed air systems is essential to ensure the reliability and performance of pneumatic equipment and the safety of downstream processes. Here are some key steps to maintain air quality:

1. Air Filtration:

Install appropriate air filters in the compressed air system to remove contaminants such as dust, dirt, oil, and water. Filters are typically placed at various points in the system, including the compressor intake, aftercoolers, and before point-of-use applications. Regularly inspect and replace filters to ensure their effectiveness.

2. Moisture Control:

Excessive moisture in compressed air can cause corrosion, equipment malfunction, and compromised product quality. Use moisture separators or dryers to remove moisture from the compressed air. Refrigerated dryers, desiccant dryers, or membrane dryers are commonly employed to achieve the desired level of dryness.

3. Oil Removal:

If the compressed air system utilizes oil-lubricated compressors, it is essential to incorporate proper oil removal mechanisms. This can include coalescing filters or adsorption filters to remove oil aerosols and vapors from the air. Oil-free compressors eliminate the need for oil removal.

4. Regular Maintenance:

Perform routine maintenance on the compressed air system, including inspections, cleaning, and servicing of equipment. This helps identify and address any potential issues that may affect air quality, such as leaks, clogged filters, or malfunctioning dryers.

5. Air Receiver Tank Maintenance:

Regularly drain and clean the air receiver tank to remove accumulated contaminants, including water and debris. Proper maintenance of the tank helps prevent contamination from being introduced into the compressed air system.

6. Air Quality Testing:

Periodically test the quality of the compressed air using appropriate instruments and methods. This can include measuring particle concentration, oil content, dew point, and microbial contamination. Air quality testing provides valuable information about the effectiveness of the filtration and drying processes and helps ensure compliance with industry standards.

7. Education and Training:

Educate personnel working with compressed air systems about the importance of air quality and the proper procedures for maintaining it. Provide training on the use and maintenance of filtration and drying equipment, as well as awareness of potential contaminants and their impact on downstream processes.

8. Documentation and Record-Keeping:

Maintain accurate records of maintenance activities, including filter replacements, drying system performance, and air quality test results. Documentation helps track the system’s performance over time and provides a reference for troubleshooting or compliance purposes.

By implementing these practices, compressed air systems can maintain proper air quality, minimize equipment damage, and ensure the integrity of processes that rely on compressed air.

air compressor

What is the difference between a piston and rotary screw compressor?

Piston compressors and rotary screw compressors are two common types of air compressors with distinct differences in their design and operation. Here’s a detailed explanation of the differences between these two compressor types:

1. Operating Principle:

  • Piston Compressors: Piston compressors, also known as reciprocating compressors, use one or more pistons driven by a crankshaft to compress air. The piston moves up and down within a cylinder, creating a vacuum during the intake stroke and compressing the air during the compression stroke.
  • Rotary Screw Compressors: Rotary screw compressors utilize two intermeshing screws (rotors) to compress air. As the male and female screws rotate, the air is trapped between them and gradually compressed as it moves along the screw threads.

2. Compression Method:

  • Piston Compressors: Piston compressors achieve compression through a positive displacement process. The air is drawn into the cylinder and compressed as the piston moves back and forth. The compression is intermittent, occurring in discrete cycles.
  • Rotary Screw Compressors: Rotary screw compressors also employ a positive displacement method. The compression is continuous as the rotating screws create a continuous flow of air and compress it gradually as it moves along the screw threads.

3. Efficiency:

  • Piston Compressors: Piston compressors are known for their high efficiency at lower flow rates and higher pressures. They are well-suited for applications that require intermittent or variable air demand.
  • Rotary Screw Compressors: Rotary screw compressors are highly efficient for continuous operation and are designed to handle higher flow rates. They are often used in applications with a constant or steady air demand.

4. Noise Level:

  • Piston Compressors: Piston compressors tend to generate more noise during operation due to the reciprocating motion of the pistons and valves.
  • Rotary Screw Compressors: Rotary screw compressors are generally quieter in operation compared to piston compressors. The smooth rotation of the screws contributes to reduced noise levels.

5. Maintenance:

  • Piston Compressors: Piston compressors typically require more frequent maintenance due to the higher number of moving parts, such as pistons, valves, and rings.
  • Rotary Screw Compressors: Rotary screw compressors have fewer moving parts, resulting in lower maintenance requirements. They often have longer service intervals and can operate continuously for extended periods without significant maintenance.

6. Size and Portability:

  • Piston Compressors: Piston compressors are available in both smaller portable models and larger stationary units. Portable piston compressors are commonly used in construction, automotive, and DIY applications.
  • Rotary Screw Compressors: Rotary screw compressors are typically larger and more suitable for stationary installations in industrial and commercial settings. They are less commonly used in portable applications.

These are some of the key differences between piston compressors and rotary screw compressors. The choice between the two depends on factors such as required flow rate, pressure, duty cycle, efficiency, noise level, maintenance needs, and specific application requirements.

China Best Sales CHINAMFG Power Compressor 390cfm 7bar 101psig Air Compressor Powered by CHINAMFG   air compressor partsChina Best Sales CHINAMFG Power Compressor 390cfm 7bar 101psig Air Compressor Powered by CHINAMFG   air compressor parts
editor by CX 2023-11-07