REFRIGERANT PRESSURE-TEMPERATURE CHART

The following table is a comparison of operating pressures for the most common refrigerants and can be used for determining which copper tube size is required. This is a guide only, the refrigerant manufacturer should be consulted for more specific information.

RefrigerantSaturated Vapour Pressures (psi)
-20°C0°C20°C40°C60°C70°C
R222158117208337418
R3244103199345555693
R134A62868133229292
R404A2872143251404
R407C2668136239387481
R410A44102196339544671