Nitrox compressors
Industrial screw compressors
Safety and ease of use are the pluses that make these low-pressure air compression systems ideal for recreational diving. Combined with a high-pressure breathing air compressor, these models provide an oxygen-enriched mixture up to 40 percent.
Coltri has 3 Low Pressure Rotary Nitrox Systems available. See Below CATALOGUE
LP Rotary Silent 250
It consists of an industrial screw compressor that delivers air at a pressure of 10 bar to the Parker® membrane. The percentage of oxygen obtained at the outlet can be adjusted from 32% to 36% thanks to a valve accessible on the front side of the compressor. If connected to a compressor with pumping unit 315 (MCH 16), Nitrox at 32% can be obtained up to a pressure of 232 bar. The oxygen analyzer allows you to check the correct percentage, adjusting it through the appropriate valve.
Standard equipment
- Electrical cabinet
- Automatic condensate drain
- 2 analyzers
- Thermostat
- 1 Parker Enoxy SA 708 oxygen membrane
|
% O2 |
32% |
36% |
|
L / MIN |
315 |
235 |
Engine: Electric three-phase 400 V - 50 Hz
Engine power: 7.5 kW - 10 Hp
Charging rate: 950 l / min - 57 m3 / h - 33.5 CFM
Working pressure: 10 bar - 145 PSI
Net weight (approx.): 215 kg - 474 lb
Dimensions (W x D x H): 75 x 85 x 139 cm - 29.5 x 33.5 x 54.7 in.
LP Rotary Silent 300
It consists of an industrial screw compressor that delivers air at a pressure of 8 bar towards a membrane that separates nitrogen and oxygen up to a maximum percentage of 40% of oxygen. The enriched air can be compressed to 232 bar in combination with a high pressure compressor. The percentage of oxygen obtained at the outlet can be adjusted from 32% to 40% thanks to a valve accessible directly on the top of the compressor. The oxygen analyzer allows you to check the correct percentage, adjusting it through the appropriate valve.
Standard equipment
- Electrical cabinet
- Automatic condensate drain
- 2 analyzers
- Thermostat
- 1 Permea 230 membrane
|
% O2 |
32% |
36% |
40% |
|
L / MIN |
600 |
400 |
300 |
Engine: Electric three-phase 400 V - 50 Hz
Engine power: 7.5 kW - 10 Hp
Charging rate: 1.070 l / min - 64.2 m3 / h - 37.7 CFM
Working pressure: 8 bar - 116 PSI
Net weight (approx.): 256 kg - 564 lb
Dimensions (W x D x H): 124 x 85 x 123 cm - 48.8 x 33.5 x 48.4 in.
LP Rotary Silent 600
The top of the Nitrox line is the LP Rotary Silent 600, consisting of an industrial screw compressor that delivers air at 10 bar to a membrane that separates nitrogen and oxygen at atmospheric pressure to obtain Nitrox 40% O2, passing to be compressed to 232 bar in combination with a high pressure compressor. The percentage of oxygen obtained at the outlet can be adjusted from 32% to 40% thanks to a valve accessible directly above the compressor. Exclusive to the Heavy Duty line.
Standard equipment
- Electrical cabinet
- Automatic condensate drain
- 2 analyzers
- Thermostat
- 1 Permea 230 membrane
|
% O2 |
32% |
40% |
|
L / MIN |
1.000 |
600 |
Engine: Electric three-phase 400 V - 50 Hz
Engine power: 15 kW - 20 Hp
Charging rate: 2.200 l/min - 132 m3/h - 77.6 CFM
Working pressure: 10 bar - 116 PSI
Net weight (approx.): 270 kg - 595 lb
Dimensions (W x D x H): 138,5 x 92,5 x 156 cm - 54.4 x 36.4 x 61.4 in.