Collapsible portable aluminum frame, solid front, solid rear wheel plastic wheel box, up on the rails, after the hand with self-locking brakes, seat belts.
可折叠便携式铝合金车架，实心前轮，塑料轮框实心后轮，上翻扶手，自锁式后把手连刹车，安全带。
Many applications require gate, globe and stop-check valves to use gearing to reduce the hand wheel rimpull and thus allow one man to manually seat or unseat the valve.
许多实际应用要求闸阀、截止阀和截止止回阀采用齿轮装置来降低手轮的边缘拉力，使得靠一个人的力量就可以启闭阀门。
Many applications require gate, globe and stop-check valves to use gearing to reduce the hand wheel rimpull and thus allow one man to manually seat or unseat the valve.
许多实际应用要求闸阀、截止阀和截止止回阀采用齿轮装置来降低手轮的边缘拉力，使得靠一个人的力量就可以启闭阀门。
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