暗杆闸阀 inside screw non-rising stem type gate valve ; non rising stem ; Inside screw nonrising stem type gate valve

螺杆闸 screw brake

关上部钻杆闸板防喷器 Close the upper pipe ram

明杆闸阀 Outside screw stem rising through handwheel type gate valve

单杆闸 single-lever brake

推杆闸缸 push rod brake cylinder

明杆平行式双闸板闸板 Double Disk Parallel Gate Valves

闸杆 [车辆] brake bar ; braking lever

横杆吊闸 drop gate

明杆式闸阀 rising stem gate valve