Oxygen Reclaimation Compressor Unit for Transfill Assemblies and Cascade Systems  Reclaim residual low pressure oxygen from master cylinders to repressurize cascade system cylinders. . Includes: Compressor 4' Transfill Hose Assembly w/ check valve, gauge Oxygen supply line connecting hose CGA-540 Oxygen Regulator Designed for use by: Fire Departments Emergency Medical Services Home Healthcare Companies Ambulance Companies  Scuba/Dive oxygen providers Medical, dental, veterinary offices x Oxygen PSI Remaining % of Oxygen in Tank Liters Remaining in Tank Potential Extra Fills 600 PSI 30% 1960 Liters 4.5 D Cylinders 400 PSI 20% 1310 Liters 3 D Cylinders 200 PSI 10% 655 Liters 1.5 D Cylinders $1895.00 Shipping $65 within Continental US