The compressors is used for refrigerators, freezers refrigerator, kitchen refrigerators, cold boxes, display cabinets, dehumidifiers and other cooling appliances. Mbp:-5oc~-25oc lbp:-15oc~-35oc mbplbp back pressure compessors Series Model Nominal power(h.P) Refrigerant Motor type Displacement(cm3 ) Voltage Fn series Qd30a 1/12 R12 Rsi(ptc) 3.0 100v-110v 50hz 100v-115v 50hz/60hz 220v-240v 50hz/60hz 220v-240v 50hz Qd36a 1/10 R12 Rsi(ptc) 3.6 Qd43a 1/8 R12 Rsi(ptc) 4.3 Qd51a 1/6 R12 Rsi(ptc) 5.2 Qd57a 1/6+ R12 Rsi(ptc) 5.7 Qd66a 1/5 R12 Rsi(ptc) 6.6 Qd77a 1/5+ R12 Rsi(ptc) 7.7 Qd91a 1/4 R12 Rsi(ptc) 9.1 Qd110a 1/3 R12 Rsi(ptc) 11.0 Qd120a 3/4 R12 Rsi(ptc) 12.0 Qd140a 1/2 R12 Rsi(ptc) 14.0 Qd30y 1/12 R134a Rsir(ptc) 3.0 Qd36y 1/10 R134a Rsir(ptc) 3.6 Qd43y 1/8 R134a Rsir(ptc) 4.3 Qd51y 1/6 R134a Rsir(ptc) 5.2 Qd57y 1/6+ R134a Rsir(ptc) 5.7 Qd66y 1/5 R134a Rsir(ptc) 6.6 Qd77y 1/5+ R134a Rsir(ptc) 7.7 Qd91y 1/4 R134a Rsir(ptc) 9.1 Qd110y 1/3 R134a Rsir(ptc) 11.0 Qd120y 3/4 R134a Rsir(ptc) 12.0 Qd14oy 1/2 R134a Rsir(ptc) 14.0 .