传动杆的种类导管口内置开关结构慢动(1NC/1NO)慢动(2NC)慢动(1NC)型号型号型号柱塞型单导管型M20D4NE-4A31D4NE-4B31D4NE-4G31滚轮·柱塞型D4NE-4A32D4NE-4B32D4NE-4G32单向动作滚轮·摇杆型(水平动作)D4NE-4A62D4NE-4B62D4NE-4G62单向动作滚轮·摇杆型(垂直动作)D4NE-4A72D4NE-4B72D4NE-4G72)