Opteon® XP10 R-513A Replacement for 134a  Azeotropic refrigerant  Excellent capacity and efficiency match for 134a  Compatible with existing equipment design/lubricants  Reduction in GWP of 56%  GWP of 631 falls well below EU 1500/1000 lines  Azeotropic refrigerant  Excellent capacity and efficiency match for 134a  Compatible with existing equipment design/lubricants  Reduction in GWP of 56%  GWP of 631 falls well below EU 1500/1000 lines