Refrigerant Lines
To maintain similar flow velocities around the A/C system the diameter of the refrigerant lines varies to suit the 2 pressure/temperature regimes. Larger diameter pipes are installed in the low pressure/temperature regime and smaller diameter pipes are installed in the high pressure/temperature regime.
Nylon lined, low permeability rubber hoses are used in the low pressure line into the A/C compressor, and in the high pressure line from the condenser. The remainder of the refrigerant lines are manufactured from steel.
Low and high pressure charging connections are incorporated into the refrigerant lines for system servicing.