BK8053-000107 Rev A.01
FineLine 300HD Plasma System
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2.6 Gas Supply
Plasma gas types:
Mild Steel ......................................................................................... Oxygen
Stainless Steel ........................................................... Air, Nitrogen, or H17
Aluminum .................................................................................................Air
Shield gas types:
Mild Steel ............................................................................... Oxygen or Air
Stainless Steel ...................................................................... Air or Nitrogen
Aluminum .............................................................................. Air or Nitrogen
Preflow gas type .................................................................................. Nitrogen
Marking gas type ................................................................... Nitrogen or Argon
Plasma gas flow rate (maximum):
Oxygen ..................................................................... 92 SCFH (2605 SLPH)
Air ............................................................................. 80 SCFH (2265 SLPH)
H17 or Nitrogen ...................................................... 125 SCFH (3540 SLPH)
Shield gas flow rate (maximum):
Air ........................................................................... 250 SCFH (7079 SLPH)
Nitrogen ................................................................. 300 SCFH (8495 SLPH)
Pre / Post flow gas flow rate (maximum) ..................... 125 SCFH (3540 SLPH)
Marking gas flow rate (maximum) .................................. 45 SCFH (1274 SLPH)
Rated Inlet gas pressure ......................................................... 115 psi (7.9 bar)
Minimum Inlet gas pressure .................................................... 105 psi (7.6 bar)
Maximum Inlet gas pressure ................................................. 145 psi (10.0 bar)
Oxygen and nitrogen should be supplied with a purity of at least 99.5%. H17 purity
should be at least 99.995%. Argon purity should be at least 99.99%. All should be
clean, dry and oil-free.
A potential fire hazard exists when cutting with oxygen. It is recommended that an
exhaust ventilation system be used when cutting with oxygen. Flashback arrestors
must be supplied (unless they are not available for the chosen gases and pressures)
to prevent a possible fire from propagating back to the gas supplies.
Ensure that oxygen lines remain free from contaminants such as oil and grease. The
mixture of such contaminants with oxygen presents an additional fire hazard.
Compressed air must be clean, dry, and oil-free and may be supplied from
compressed cylinders or from an air compressor. Be aware that shop air systems
are prone to oil and moisture contamination. If shop air is used, it must be cleaned to
ISO 8573.1: Class 1.4.1. Specify dry air when using compressed cylinders.
Breathing quality air contains moisture and must not be used.
3/8” (inside diameter) hoses are required for all inlet gas connections. Mating
connectors are available as an option. Quick-connect fittings must not be used.