北京华德换向阀部分型号如下：
4WE10A20B/OFAG24N 4WE10A20B/OFAW220-50N
4WE10A31B/CG24N9Z5L 4WE10A31B/CW220-50N9Z5L
4WE10B31B/CG24N9Z4 4WE10B31B/CG24N9Z5
4WE10B31B/CG24N9Z5L 4WE10B31B/CG24NZ4
4WE10B31B/CG24NZ5 4WE10B31B/CG24NZ5L
4WE10B31B/CW220-50N9Z4 4WE10B31B/CW220-50N9Z5
4WE10B31B/CW220-50N9Z5L 4WE10B31B/CW220-50NZ4
4WE10B31B/CW220-50NZ5 4WE10B31B/CW220-50NZ5L
4WE10B31B/OFCG24N9Z5L 4WE10B31B/OFCW220-50N9Z5L
4WE10C20B/OFAG24N 4WE10C20B/OFAW220-50N
4WE10C31B/CG24N9Z4 4WE10C31B/CG24N9Z5
4WE10C31B/CG24N9Z5L 4WE10C31B/CG24NZ4
4WE10C31B/CG24NZ5 4WE10C31B/CG24NZ5L
4WE10C31B/CW220-50N9Z4 4WE10C31B/CW220-50N9Z5
4WE10C31B/CW220-50N9Z5L 4WE10C31B/CW220-50NZ4
4WE10C31B/CW220-50NZ5 4WE10C31B/CW220-50NZ5L
4WE10D31B/CG24N9Z4 4WE10D31B/CG24N9Z5
4WE10D31B/CG24N9Z5L 4WE10D31B/CG24NZ4
4WE10D31B/CG24NZ5 4WE10D31B/CG24NZ5L
