KOMPASS电液换向阀部分常规型号参考：D4-04-2B , D4-04-2D , D4-04-3C , D4-06-2B , D4-06-2D , D4-06-3C , D4-10-2B , D4-10-2D , D4-10-3C , D5-04-2B , D5-04-2D , D5-04-3C , D5-06-2B , D5-06-2D , D5-06-3C , D5-10-2B , D5-10-2D , D5-10-3C