Special order item: estimated delivery, 3-4 weeks. Hydraulics International, Inc. (HII) gas booster is designed to boost gas directly from a cascade system, a gas generation system, a cryogenic system or a high pressure compressor to outlet pressures of 3450-psi (238-bar). The unit ensures full fills even if the supply storage pressure drops as low as 300-psi (20 bar). The unit may be Driven manually, by means of its integral hand pump assembly (optional); a low pressure conventional air compressor; or Regulated high-Pressure air storage supply (SCUBA, SCBA or NITROGEN bottles). Maximum 150psi (10 bar) air supply. The high-pressure sections of the booster are cooled by the drive exhaust air and operate dry, non-lubricated. In the shop air drive mode, non-contaminated outlet gas is assured because of complete dual vented separation from the drive section. Increase System Capacity: Up to 50% more fills Eliminate Cascading: Allows you to fill or top-off from storage as low as 300 psi (20 bar) Boost gas pressure from 300 psi (20 bar) to 3450 psi (237 bar) Hold Pressure. Can be controlled to stop at any predetermined pressure and hold that pressure indefinitely without consuming power, and restart under full load Intrinsically Safe. Compressed air reduces risk of heat, flame, spark, or electrical shock Contamination FREE. Separation between drive and gas section uses three static seals with dual vents