(1)截止阀结构比闸阀简单，制造与维修都较方便。
(1) The structure of the stop valve is simpler than that of the gate valve, and the manufacturing and maintenance are more convenient.
(2)密封面不易磨损及擦伤，密封性好，启闭时阀瓣与阀体密封面之间无相对滑动，因而磨损与擦伤均不严重，密封性能好，使用寿命长。
(2) The sealing surface is not easy to wear and scratch, and has good sealing performance. There is no relative sliding between the valve flap and the valve body sealing surface when opening and closing, so the wear and scratch are not serious, the sealing performance is good, and the service life is long.
(3)启闭时，阀瓣行程小，因而截止阀高度比闸阀小，但结构长度比闸阀长。
(3) When opening and closing, the valve disc travel is small, so the height of the stop valve is smaller than that of the gate valve, but the structure length is longer than that of the gate valve.
(4)启闭力矩大、启闭较费力，启闭时间校长。
(4) The opening and closing torque is large, and the opening and closing are laborious. The opening and closing time is the principal.
(5)流体阻力大，因阀体内介质通道较曲折，流体阻力大，动力消耗大。
(5) The fluid resistance is large, because the medium channel in the valve body is tortuous, the fluid resistance is large, and the power consumption is large.

(6)介质流动方向公称压力PN16MPa时，一般采用顺流，介质从阀瓣下方向;公称压力PN20MPa时，一般采用逆流，介质从阀瓣上方向下流.以增加密封件能。使用时，截止阀介质只能单方向流动，不能改变流动方向。
(6) When the nominal pressure of the medium flow direction is PN16MPa, the medium generally flows in the downstream direction, and the medium flows upward from the lower direction of the valve clack; When the nominal pressure is PN20MPa, the reverse flow is generally adopted, and the medium flows down from the upper direction of the valve clack to increase the sealing element energy. When in use, the medium of the stop valve can only flow in one direction and cannot change the flow direction.
(7)全开时阀瓣经常受冲蚀。
(7) The valve disc is often eroded when it is fully opened.
截止阀的阀杆轴线与阀座密封面垂直。阀杆开启或关闭行程相对较短，并具有非常可靠的切断动作，使得这种阀门适合作为介质的切断或调节及节流使用。
The stem axis of the stop valve is perpendicular to the sealing surface of the valve seat. The opening or closing stroke of the valve stem is relatively short, and it has a very reliable cutting action, making this valve suitable for cutting off, adjusting and throttling as a medium.
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