Home > Compressors > Low Pressure Breathing Air > Low Presure Custom
Nuvair has been manufacturing low pressure breathing air systems for the working diver for over 20 years.
Custom Build Your Compressor:
The first choice will be the size or output of the compressor. What CFM or LPM air output will be required to supply the diver(s) that will use the compressor?
The minimum pressure requirement can be calculated as maximum depth pressure plus 100 psi. This would be a minimum pressure. CFM calculations normally are done for a demand helmet at (3 x # divers) x (depth + 33)/33 =cfm and for a free flow helmet (4.5 x # divers) x (depth +33)/33=cfm (1 CFM = 28.3 LPM).
The second choice is the type of compressor used to pump the air. The choices are reciprocating (piston) or rotary screw. Traditionally the reciprocating has been used due to lower oil “mist” carry over. The newer Rotary Screw compressors also have very low oil carry over and require little maintenance. In the reciprocating category for small sizes there is a choice of oil lubricated or oil-less. For shallow work the light oil-less can offer some advantages. For the deeper water the oil lubricated is going to be more reliable at higher pressure ratings and require less maintenance. Another recommendation for deeper water is a two stage pressure lubricated compressor with even higher pressure output.
The third choice will be the type of engine that is used to turn the compressor. The choices from Nuvair are gas, diesel, electric or hydraulic. Electric is available in any voltage or Hz required. For multinational companies 50/60Hz compressors are available. We also offer diesel/electric combo packages where the compressor can be run by electric when available or diesel when electric is not available.
The fourth choice is the type of frame that is used. Each frame type has advantages and disadvantages. Choose the frame that will be best for the type of job and place it will be used.
Examples of Compressor Blocks and Output
Please Click on the Quincy or Champion Image to Open Specifications
For information on the Rotair RVK please contact us.
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Quincy 325 19 CFM |
Quincy 5120 95 CFM |
Champion R15 23 CFM |
Champion R30 49 CFM |
Rotair RVK Rotary Screw |
