21Nm3 12 Mpa CO2 Gas Booster Compressor High Pressure CO Diaphragm Compresor

Superior diaphragm life due to proprietary cavity contour designs and manufacturing process. This reduces diaphragm stress and extends diaphragm life to potentially exceed 40,00 hours of operation.

  • Model: GV-21/(4-8)-120
  • Flow Rate: 21Nm3/h
  • Suction Pressure: 0.4-0.8Mpag
  • Discgarge Pressure: 12Mpag
  • Compressor Mediums: 100% CO2 dry gas
  • Power: 7.5KW
  • Luricating Type: Oilfree
  • Cooling type: Water cooling

Keepwin Gas solution | Reciprocating compressor

Product Name120bar CO2 dry Gas Booster Compressor 
Compress medium100%  CO2 dry gas
TypeV type, Two stage, two diaphragm, Two cylinder, Single actioin, Water wooling, Oil Free Diaphragm Compressor
Capacity flow rate21Nm3/h (3m3/min; at the suction pressure 0.6Mpa condition )
Suction pressure0.4Mpa-0.8Mpa (4bar-8bar)
Discharge pressure12Mpa(120bar)  
Shaft Power≤5 KW
Driven methodAntistatic Belt drive
Suction temperature≤30℃
Ambient temperature≤0-45℃
Transmission temperature≤45℃(after water cooled)
Main part materialCylinder Head: 304L, Cylinder &Piston & Connect rod:45#;Gas Pipeline: 304L; Diaphragm: 301L
Flange: 304 steel, Crosshead pin& piston rod: 40Cr;
Piston ring: MTCuMoCr-400; Crankcade& Crosshead: HT200. suction & discharge valve:32Cr13
Water consumption1.0 t/h  
Cooling methodWater cooling ( note: the customer's local water tower's working pressure should 0.2-0.4Mpa, and inlet temperature<30℃)
Compressor machine Dimension1200×700×980mm
N.W Weight650kgs
Install positionIndoor or outdoor with shed
Noise≤85dB(A) (within 1m distance)
Paint color can according to client's requirement to paint
Compressor HS CODE8414.80.49
Main Motor Information
Motor typeY Series, Three Phases, Asynchronism
Motor Power7.5KW
Motor speed1450r/min
Protection levelIP 55, Class F, Class B

Keepwin Gas solution | Reciprocating compressor

Providing World-Class Diaphragm Compressors

The leak-tight and contamination-free features ofKeepwin's diaphragm compressor keepwin compressors provide numerous benefits. When toxic or hazardous gases are being processed, these compressors protect the health of workers and the environment and maintain a safe operating area. Since the process gases are totally isolated and have no contact with hydraulic, lubricating, or cooling fluids, high-purity and expensive gases can be processed without any contamination or losses.

Keepwin Gas solution | Reciprocating compressor

KEEPWIN compressors are used in virtually every industry in which high-purity, rare, or hazardous gases are utilized. Some specific uses include:

1. Flammable, oxidizing, toxic, and radioactive gases 2. Gas cylinder filling 3. Gas blending and mixing systems 4. Gas transfer and filling and off-loading of tube trailers 5. Chemical and petrochemical gas processing systems 6. Gases for electronics, semiconductor, and fiber optics manufacturing 7. Pressure boosting and storage of gases from on-site gas generation systems 8. Pressure boosting for gas recycling systems 9. High-pressure gas storage systems 10. Hydrogen gas systems at electric power plants 11. Hydrogenation systems 12. Supercritical fluids and solvent extraction systems 13. Research and Development

Keepwin Gas solution | Reciprocating compressor

Some of the other features and benefits of Keepwin’s diaphragm compressors include:

1. Design pressures to over 900 bar / 13,050 psig 

2. Gas flow rates over 2,000 Nm3/hour 

3. Fast-acting leak detection systems to indicate diaphragm and seal failure 

4. Safe, non-flammable hydraulic fluid used for oxygen and other oxidizing gas applications 

5.Single and multiple stage configurations for high compression ratios

6. Horizontally opposed designs available for high-efficiency operation

7. Process contacting metals are available in a variety of alloys for compatibility with process gases

8. Process contacting seals are available in a variety of elastomers and ductile metals for compatibility with process gases

9. Unique cavity design feature for low or high-pressure operations

Keepwin Gas solution | Reciprocating compressorKeepwin Gas solution | Reciprocating compressor

The advanced horizontally-opposed crankcase designs used in many of KEEPWIN's duplex and 2-stage compressors yield numerous advantages.

1. Energy efficiency 

2. Easy maintenance 

3. Minimal unbalanced forces 

4. All compression loading on rod 

5. Reduced load on crankshaft bearings 

6. No troublesome transition assembly 

7. Duplex units that start up under high inlet pressure without unloading 

8. Low horsepower requirements 

9. Duplex units are capable of compressing different gases simultaneously

Keepwin Gas solution | Reciprocating compressorKeepwin Gas solution | Reciprocating compressor


Keepwin Gas solution | Reciprocating compressor

Keepwin Gas solution | Reciprocating compressor

Keepwin Gas solution | Reciprocating compressor

Why Diaphragm Compressors?

Designed and Constructed for High Reliablilty and Low Maintenance

This is accomplished by isolating the process media from the piston and related components with a set of metal diaphragm compressors.

The piston moves a column of hydraulic fluid, which in turn moves the diaphragm-set, and displaces the process media.

The process side of these units is constructed of corrosion-resistant materials to prevent further contamination.

Keepwin  diaphragm keepwin compressors are ideal for compressing all types of gases without incurring any contamination of the process media or leakage of gas to ambient air that results from reciprocating compressor and other types of compressors. Traditional reciprocating compressors are subject to leakage past the piston rings which can result in contamination of the process gas with the hydraulic oil.

Diaphragm compressors are well-suited for applications ranging from vacuum to pressure as high as 3,000 psig.

Because of the large surface areas of the heads and diaphragms, the presence of pulsing oil and cooling of the upper heads (process side) KEEPWIN compressors typically run considerably cooler than conventional piston-type reciprocating compressors.

Keepwin Gas solution | Reciprocating compressorKeepwin Gas solution | Reciprocating compressor

Keepwin Gas solution | Reciprocating compressorKeepwin Gas solution | Reciprocating compressor