20-40 Bar Oil-Free Air
CM/G water-lubricated oil-free screw-air-compressor models documented from 2.0 to 4.0 MPa, with fixed and permanent-magnet variable-frequency configurations.
Gas Compression + Clean Compressed Air
Acetylene Compressor & Industrial Compressed-Air Solutions
Engineering-led enquiries for acetylene compression are separated from the documented CMN oil-free air-compressor catalogue. That distinction protects buyers from treating ordinary air-compressor data as acetylene-service specifications.
AcetyleneProject-specific engineering review
20-40 bar airDocumented CM/G catalogue family
0.8-1.25 MPa airDocumented fixed/VSD families
Two Different Compression Duties
Acetylene Compression
Acetylene is handled as a specialist gas-compression project. Selection begins with gas composition, suction condition, discharge requirement, required flow, duty cycle, cooling arrangement, local code requirements, and a supplier engineering review. No CMN air-compressor model in the supplied catalogues is represented here as an acetylene compressor.
Industrial Compressed Air
The supplied CMN documentation supports oil-free screw-air-compressor families for standard industrial compressed-air applications, including a documented 20-40 bar CM/G family plus lower-pressure fixed-frequency and variable-frequency families.
Documented Product Families
Variable-Frequency Oil-Free Air
Documented CM-PVF air-compressor family for 0.8, 1.0, and 1.25 MPa working-pressure classes with model-specific FAD ranges.
Fixed-Frequency Oil-Free Air
Documented CM-BF/CM-B family for plants with steadier compressed-air demand and model-specific FAD, power, noise, weight, and envelope data.
Agriculture & Food Applications
Agricultural content on this site refers to compressed-air applications in processing, conveying, pneumatic controls, packaging, bottle blowing, and plant utilities. It does not imply that acetylene compression is used for grain, livestock, or fruit processing.
Grain Processing
Define pneumatic controls, conveying demand, dryer and packaging loads, air quality, seasonal operating hours, and redundancy before sizing.
Livestock & Feed
Use demand-based compressed-air selection for feed mills, ingredient handling, packaging, valve actuation, and maintenance utilities.
Fruit & Food Processing
Prioritize air quality, point-of-use treatment, packaging demand, washdown environment, temperature, and seasonal load variation.
Operating Principle
Oil-Free Screw Air
The documented CMN oil-free families use screw compression for air service. Product-family documentation identifies water-lubricated oil-free configurations for the 20-40 bar CM/G range and separate lower-pressure oil-free configurations.
Acetylene Service
Acetylene compression is intentionally not reduced to an air-compressor operating diagram. The public selection workflow remains high level and routes design details to qualified engineering review.
Key Parameter Range
| Documented family | Working-pressure classes | Flow representation | Publication status |
|---|---|---|---|
| CM/G oil-free air | 2.0-4.0 MPa (model dependent) | Fixed FAD or PV FAD range | Product facts from approved catalogue |
| CM-PVF oil-free air | 0.8 / 1.0 / 1.25 MPa | Variable-frequency FAD range | Product facts from approved catalogue |
| CM-BF/CM-B oil-free air | 0.8 / 1.0 / 1.25 MPa | Fixed FAD | Product facts from approved catalogue |
| Acetylene compressor | Project specific | RFQ input required | No model specification published without acetylene-specific source evidence |
Selection Guide
1. Medium or gas
State whether the duty is acetylene or compressed air. They are not interchangeable.
State whether the duty is acetylene or compressed air. They are not interchangeable.
2. Pressure
Provide suction and required discharge pressure plus allowable pressure variation.
Provide suction and required discharge pressure plus allowable pressure variation.
3. Flow
State required flow and the reference condition used for that value.
State required flow and the reference condition used for that value.
4. Duty cycle
Provide operating hours, load profile, expected starts, and redundancy requirement.
Provide operating hours, load profile, expected starts, and redundancy requirement.
5. Cooling/site
State ambient range, available cooling water, utilities, and installation constraints.
State ambient range, available cooling water, utilities, and installation constraints.
6. Compliance
Identify destination country, plant standard, hazardous-area requirements, and buyer inspection needs.
Identify destination country, plant standard, hazardous-area requirements, and buyer inspection needs.
RFQ rule: If the service medium is acetylene, do not select from the air-compressor tables. Send the gas-service requirement for engineering review.
Markets
The initial market program focuses on the United States, Canada, Brazil, Argentina, and Australia. Country pages are built around buyer questions and major agricultural processing sectors, while acetylene content stays focused on industrial gas and cylinder-filling enquiries.