stick vent valve 斗杆缸放气阀

stick in valve housing 斗杆内缩阀壳体

stick line relief valve 斗杆管路安全阀

backhoe stick control valve 反铲斗杆控制阀

stick crossover valve housing 斗杆转换阀壳

stick main control valve 斗杆主控制阀

stick pilot control valve 斗杆先导操纵阀

stick crossover valve 斗杆转换阀

joy-stick joystick valve 操纵杆阀

stick rod end relief valve 斗杆缸杆端安全阀