Comparisions
| Screw Air Compressor | Piston Air Compressor | |
| 30~40bar Air Compressor |
 Oil free Screw Air Compressor |
 Oil free Piston Air Compressor |
| Air quality | Oil free (TUV Class 0 Certificate) | Air cylinder Oil free, Crankcase has oil |
| Compression Method | 2 Stage Screw | 3 Stage Piston |
| Lubricating Medium | Pure Water | None |
| Temperature | Low: < 55℃, No need for cooling | High: 125~200℃, After cooling about 60℃ |
| Cooling Method | Air Cooled or Water Cooled (Only one cooler for lubricating water) | Water Cooled (Two interstage cooler and one after cooler for compressed air) |
| Rotate Speed | 3000 r/min Ideal Speed | 600~900 r/min Low Speed |
| Vibration and Noise | Balance and Simple structure, low vibration and less noise | The pistons rise and fall or move back and forth causing too much vibration and Noise |
| Costs – Purchasing | More | Less |
| Costs – Foundation | No costs | Require foundation and grouting due to high unbalanced forces & high vibration. |
| Costs – Maintenance | Only Air filter elements and Water filter elements | High wear & tear of moving parts like piston rings, valves, etc. |
| Costs – Energy | Motor Power: 112kW (1st stage 75kW+2nd stage 37kW) (e.g. 40bar 10m3/min) |
Motor Power: 132kW (e.g. 40bar 10m3/min) |
| Capacity Loss | There is no loss / very minor loss in Capacity over a period. | There is De-ration in Capacity due to wear and tear in-cylinder crankcase, piston rings, pistons, and valves. |
Parameters
High-pressure 30~40bar PET Screw Air Compressor
| Model | Pressure | Capacity | Power | Noise | Dimension(mm) | Weight |
|---|---|---|---|---|---|---|
| OTVSE22F(S) | 30 bar | 2.0m³/min | 11+11kW | 65dB | 3000×1400×1700 | 1650kg |
| 2900×1400×1700 | 1250kg | |||||
| OTVSE37F(S) | 30 bar | 3.7m³/min | 30+11kW | 65dB | 3000×1400×1700 | 1650kg |
| 2900×1400×1700 | 1250kg | |||||
| OTVSE45F(S) | 30 bar | 4.5m³/min | 30+15kW | 65dB | 3000×1400×1700 | 1700kg |
| 2900×1400×1700 | 1400kg | |||||
| OTVSE60F(S) | 30 bar | 6 m³/min | 37+22kW | 70dB | 3000×1400×1700 | 2000kg |
| 2900×1400×1700 | 2000kg | |||||
| OTVSE90F(S) | 30 bar | 10m³/min | 55+37kW | 73dB | 3600×1750×2000 | 3000kg |
| 3500×1500×1730 | 2300kg | |||||
| OTVSE120F(S) | 30 bar | 13m³/min | 75+45kW | 75dB | 4000×1750×2000 | 3500kg |
| 3500×1500×1730 | 2950kg | |||||
| OTVSE145S | 30 bar | 16m³/min | 90+55kW | 77dB | 4000×1700×1800 | 3500kg |
| OTVSE185S | 30 bar | 20m³/min | 110+75kW | 78dB | 4000×1700×1800 | 4000kg |
| OTVSE220S | 30 bar | 24m³/min | 132+90kW | 78dB | 4000×1800×2100 | 4500kg |
| OTVSE260S | 30 bar | 28m³/min | 185+75kW | 78dB | 4200×2000×2100 | 4700kg |
| OTVSE315S | 30 bar | 36m³/min | 185+132kW | 80dB | 4500×2250×2200 | 5000kg |
| OTVSE355S | 30 bar | 40m³/min | 220+132kW | 80dB | 4500×2250×2200 | 5000kg |
Details
Air end
Since 1988
Material: Stainless steel, copper alloy, polymers
Motor
Direct Drive
Insulation Class: F Protection Level: IP55 Bearing: SKF
Separator
Clean and Safe air
Material: Medical Stainless steel
Cooler
High Efficiency
Material: Copper Best Quality and Structure
Inverter & Electric
Inverter/PLC: Inovance
Thermal relay/ A.C. Contractor: Siemens
Control Pannel
Brand: Inovance
Display all operation parameters and alarm system
Water Softener
Brand: Pentair
Offer pure lubricating water and extend the service life of air end
Control Valve
Brand: SMC
Imported famous brand component to ensure the stability