Gold Member Since 2015
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Dream (Shanghai) Compressor Co., Ltd.

Air Compressor, Screw Air Compressor, Rotary Air Compressor manufacturer / supplier in China, offering Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor, 21bar 22m3/Min High Pressure Diesel Engine Portable Air Compressor for Drilling Dig/High Pressure Air Compressor, 4wheels Diesel Engine High Pressure Portable Rotary Screw Air Compressor Made in China and so on.

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Supplier Homepage Product Screw Air Compressor(VSD Type) Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor

Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor

FOB Price: Get Latest Price
Min. Order: 1 Set
Port: Shanghai, China
Production Capacity: 500set/Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: DM-V Series
  • Cooling System: Air Cooling
  • Cylinder Position: Vertical
  • Compress Level: Double-Stage
  • Trademark: Dream
  • Specification: CE, TUV
  • HS Code: 8414809090
  • Lubrication Style: Lubricated
  • Cylinder Arrangement: Balanced Opposed Arrangement
  • Structure Type: Closed Type
  • Refrigerant Type: Freon
  • Transport Package: Wood Box
  • Origin: China
Product Description
 Normal variable frequency screw air compressor/rotary air compressor 
Recommended Products: 
Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor
http: //dreamcompressor. en.
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http: //dreamcompressor. 
en. madeinchina. com/pro
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http: //dreamcompressor. en.
sion-Compressor-Double-Stage-Kompressor-VSD-Screw-Air-Compressor. html  
Strict Requirement for best energy saving; 
Starting & Running the impact of the grid is small,
after the starting to run and reach the rated pressure and the compressor will operate in the variable frequency mode; 

Constant pressure air supply to keep the balance between air supplying & air 
Excellent controlling system leads to safety protection function. ) 
Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor

Cost comparison:   

Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor
DREAM DMV screw air compressor can, under the principle of stable discharge pressure, change
the rotation speed of the main motor precisely according to the variety of using air capacity, to make
the air compressor just discharge the needed air capacity, meanwhile, it also just consumes the
energy needed for discharging the compressed air. Therefore, it has achieved the goal of energy-
saving, which means the saved energy expense during the operating period of the whole machine
far surpass the price of air compressor itself. 

Start-up and operation:   

Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor

From several start-up modes shown in the chart, we can see that the variable frequency
compressor start-up style is of slow to add speed, which more stable than soft start and absolutely
avoid the current peak. After running to the rated pressure, it will operate with variable frequency, 
which can adapt to the power lacking environment. 

Constant pressure for air supply with balance:   

Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor
In the chart, it shows the operating condition between normal air compressor and variable frequency
air compressor. According to the various of air requires to adjust the speed of motor to make sure
the air output and air requires are balanced, so avoid machine to frequently load and unload during
various of air requires, which compared with the traditional compressor, the variable frequency air
compressor could save about 35% of energy or more. Stable pressure output can control the pressure
between 0.01MPa-0.02MPa, which avoids the high load current lost because of the traditional
compressors0.05-0.2MPa pressure. 

Product Parameters: 
delDischarge Pressure(Mpa)Power
Outlet Size
0.750.8511.3(L*W*H, mm)
Air Discharge(m3/min)
DM-22AV1.90~3.701.80~3.551.60~3.201.40~2.802264±3G1 1/4"6001050*1050*1300
DM-30AV2.60~5.202.50~5.002.12~4.251.87~3.753064±3G1 1/4"6901050*1050*1300
DM-37AV3.40~6.503.14~6.152.80~5.602.30~4.603764±3G1 1/4"8101200*1050*1300
DM-45AV3.90~7.803.60~7.403.30~6.702.85~5.804566±3G1 1/2"9001200*1200*1500
DM-55AV5.25~10.504.90~9.904.40~8.804.00~8.005566±3G1 1/2"10501200*1200*1500
ModelDischarge Pressur(Mpa)Power
Outlet Size
0.750.8511.3(L*W*H, mm)
Air Discharge(m3/min)
DM-22GV1.9~3.71.8~3.61.6~3.21.4~2.82262±3G1 1/4"6001350*800*1150
DM-30GV2.6~5.22.5~5.02.1~4.31.7~3.83062±3G1 1/4"7201450*900*1200
DM-37GV3.4~6.63.1~6.22.8~5.62.3~4.63765±3G1 1/4"8501600*1000*1400
DM-45GV3.9~7.83.6~7.43.3~6.62.8~5.74565±3G1 1/2"9601600*1000*1400
DM-55GV5.2~10.54.9~10.04.4~8.94.0~8.05565±3G1 1/2"12701800*1200*1400
DM-90AV8.2~16.5 8.0~16.0 6.9~13.9 6.1~12.3 9070±3G2"20002150*1300*1550
DM-110AV10.5~21.510.0~20.08.5~17.0 7.4~14.8 11072±3DN8028502450*1600*1700
DM-315AV29.5~59.829.0~58.024.5~49. 21.0~42.031580±3DN12564003700*2000*220

Project Scheme:
 Normal Variable Frequency Screw Air Compressor/Rotary Air Compressor


Q: Are you trading company or manufacturer? 
A: We are factory.  

Q: How long is your delivery time? 
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.  

Q: What is your terms of payment? 
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shippment.  

Q: How do you make our business long-term and good relationship? 
A: 1. We keep good quality and competitive price to ensure our customers benefit; 
2. We respect every customer as our friend and we sincerely do business and make friends with them, 
no matter where they come from.  

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