closed crossover valve 正遮盖的换向阀 ; 正遮蔽的换向阀

boom crossover valve housing 动臂转换阀壳

stick crossover valve housing 斗杆转换阀壳

boom crossover valve 动臂转换阀

stick crossover valve 斗杆转换阀

stick crossover valve spool 斗杆转换阀柱塞

open crossover valve 中间位置半开的阀

crossover valve control 转换阀控制

closed d crossover valve 正遮盖的换向阀