(1)截止閥結(jié)構(gòu)比閘閥簡(jiǎn)單，制造與維修都較方便。
(1) The structure of the stop valve is simpler than that of the gate valve, and the manufacturing and maintenance are more convenient.
(2)密封面不易磨損及擦傷，密封性好，啟閉時(shí)閥瓣與閥體密封面之間無(wú)相對(duì)滑動(dòng)，因而磨損與擦傷均不嚴(yán)重，密封性能好，使用壽命長(zhǎng)。
(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)啟閉時(shí)，閥瓣行程小，因而截止閥高度比閘閥小，但結(jié)構(gòu)長(zhǎng)度比閘閥長(zhǎng)。
(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)啟閉力矩大、啟閉較費(fèi)力，啟閉時(shí)間校長(zhǎng)。
(4) The opening and closing torque is large, and the opening and closing are laborious. The opening and closing time is the principal.
(5)流體阻力大，因閥體內(nèi)介質(zhì)通道較曲折，流體阻力大，動(dòng)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)介質(zhì)流動(dòng)方向公稱(chēng)壓力PN16MPa時(shí)，一般采用順流，介質(zhì)從閥瓣下方向;公稱(chēng)壓力PN20MPa時(shí)，一般采用逆流，介質(zhì)從閥瓣上方向下流.以增加密封件能。使用時(shí)，截止閥介質(zhì)只能單方向流動(dòng)，不能改變流動(dòng)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)全開(kāi)時(shí)閥瓣經(jīng)常受沖蝕。
(7) The valve disc is often eroded when it is fully opened.
截止閥的閥桿軸線與閥座密封面垂直。閥桿開(kāi)啟或關(guān)閉行程相對(duì)較短，并具有非常可靠的切斷動(dòng)作，使得這種閥門(mén)適合作為介質(zhì)的切斷或調(diào)節(jié)及節(jié)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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