A blend of R-22, R-152a, and R-124 intended for retrofitting R-12 in lower temperature refrigeration systems. The pressure and system capacity match R-12 when the blend is running below 0°F in the evaporator. The B version can also be used in R-500 air conditioning systems. The 8°F temperature glide in the evaporator may result in changes to control settings. Discharge pressure increases compared to R-12, as well as an increase in discharge temperature. The R-152a content, an HFC, hurts the miscibility with mineral oil. It is recommended to change some of the oil to alkylbenzene, especially at lower evaporator temperatures.

Part NumberDescription
30R401B30 LB. CYLINDER
125R401B125 LB. RETURNABLE CYL.

 

Download SDS for R-401B.

Download the R-401B product information
from the NRI Refrigerant Reference Guide