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CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor
CNG 3 EVO - Coltri - CNG High Pressure Compressor

CNG 3 EVO - Coltri - CNG High Pressure Compressor

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Aerotecnica Coltri expands the range of high pressure compressors for natural gas refuelling of vehicles for private use, introducing the small CNG 3 EVO.

With a refueling time of 50 l / min (3 m3 / h) and a charging rate at 0/200 bar of 5h and 20 min. (Cylinder 80 l), the new CNG 3 EVO, less expensive, satisfies a wide range of users with lower performance requirements.


The CNG EVO compressor series has been designed to re-compress natural gas and bio-methane which has already been treated and filtered. These compressors are designed to supply fuel to domestic or small fleets of vehicles powered by natural gas. The electronic control and command unit simplifies their use with an automatic stop function when the tank is full and state-of-the-art safety systems.

The models are powered by a three-phase electric motor when equipped with the CNG EVO 10, CNG EVO 14 and CNG EVO 19 pumping units, however if equipped with the CNG EVO 3, CNG EVO 5 pumping unit it can be powered by a single-phase or three-phase motor.

Standard equipment includes a 4.5 m high-pressure flexible hose with direct-acting NGV1 connection refuelling nozzle suitable for filling pressures up to 250 bar

Coltri Compressors

Coltri Compressors is a brand of high pressure compressors for breathing air, CNG and technical gases. Coltri are present in more than 60 countries with unmistakable quality of Made in Italy, the versatility of our products, with many qualities: light, sturdy and compact, economical in use, durable and easy to maintain.

Coltri are the only ones to date to use high quality materials produced in Italy with high precision machine tools, that is the same material used in the aeronautical field and worked entirely in internal workshop, being a leading company in the diving sector for 50 years.

CNG compressor units are perfect for natural gas refuelling from the grid, for small fleets, taxis, forklifts, small trucks.

Coltri CNG Compressor Inside

Machine Parts/Components

cng-evo-part-machine.png1. Frame
2. Electronic control
3. Power button
4. Stop button
5. Reset button
6. Emergency button
7. ON/OFF selector
8. Refill tube coupling
9. Safety valve manifold
10. Safety pressure switch
11. Oil drain valve
12. Gas discharge flue
13. Motor
14. Compressor
15. Gas filter
16. First stage
17. Second stage
18. Third Stage
19. Cut-off solenoid valve
20. Oil fill cap
21. Gas intake safety pressure switch
22. Antistatic cooling fan
23. Anti-static belt
24. Vibration damping
25. Final Safety pressure switch
26. Safety thermostat
27. Condensate separator
28. Pressure sensor


Pressure Circuit

1. Cut-off solenoid valve
2. Gas intake safety pressure switch
3. Suction filter
4. Intake valve 1st stage
5. Discharge valve 1st stage
6. Cooling pipe 1st-2nd stage
7. Intake valve 2nd stage
8. Discharge valve 2nd stage
9. Safety valve - 1st stage
10. Safety valve manifold
11. Safety pressure switch
12. Cooling pipe 2nd-3rd stage
13. Manifold
14. Safety valve - 2nd stage
15. Intake valve 3rd stage
16. Discharge valve 3rd stage
17. Final cooling pipe
18. Pressure sensor
19. Safety thermostat
20. Safety valve
21. Final Safety pressure switch
22. Pressure gauge
23. Condensate separator
24. Condensate drainage solenoid valve
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IdoSell Trusted Reviews
4.83 / 5.00 1518 reviews
IdoSell Trusted Reviews
Very very good
Simple item, but works as advertised! Quick shipping even to Portugal!