Application: Connection of indoor/outdoor units of direct expansion systems working with the following refrigerant gases: R410A, R32, R134a, R404a, R407c;Generic transport of refrigerant gases, liquid or vapour, pressurized or non-pressurized;Not compatible with R22;Temperature range (TS): -30C +110C (-22F +230F);Resistant to peaks of 130C (265F);Maximum operative pressure (PS): 60 bar (0 - 870 PSI);Tested at 78 bar (1130 PSI);Design pressure (PD): 100 bar (1450 PSI);7-layer MLT Structure;Long-chain polyamide;Aluminium film;High-strenght synthetic fiber braiding;High barrier plastic polymer layer;Anti-wear, anti-UV, anti-abrasion and chemically inert external coating layer;Closed cell expanded polyethylene insulation;Anti-UV polyethylene protective coating