截止阀又称截门阀，属于强制密封式阀门，所以在阀门关闭时，必须向阀瓣施加压力，以强制密封面不泄漏。当介质由阀瓣下方进入阀门时，操作力所需要克服的阻力，是阀杆和填料的摩擦力与由介质的压力所产生的推力，关阀门的力比开阀门的力大，所以阀杆的直径要大，否则会发生阀杆顶弯的故障。按连接方式分为三种：法兰连接、丝扣连接、焊接连接。从自密封的阀门出现后，截止阀的介质流向就改由阀瓣上方进入阀腔，这时在介质压力作用下，关阀门的力小，而开阀门的力大，阀杆的直径可以相应地减少。同时，在介质作用下，这种形式的阀门也较严密。我国阀门“三化给”曾规定，截止阀的流向，一律采用自上而下。截止阀开启时，阀瓣的开启高度，为公称直径的25%～30%时.流量已达到大，表示阀门已达全开位置。所以截止阀的全开位置，应由阀瓣的行程来决定。

截止阀（stop valve,Globe Valve）的启闭件是塞形的阀瓣，密封上面呈平面或海锥面，阀瓣沿阀座的中心线作直线运动。阀杆的运动形式，（通用名称：暗杆），也有升降旋转杆式可用于控制空气、水、蒸汽、各种腐蚀性介质、泥浆、油品、液态金属和放射性介质等各种类型流体的流动。因此，这种类型的截流截止阀阀门非常适合作为切断或调节以及节流用。由于该类阀门的阀杆开启或关闭行程相对较短，而且具有非常可靠的切断功能，又由于阀座通口的变化与阀瓣的行程成正比例关系，非常适合于对流量的调节。REXROTH R162221420
WENGLOR OY1P300189
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NIRECO FM2B.06Y-LS0/Y
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HYDAC HDA8446-A-0010-296
FILTERSCH 4/300/S 300X102
TR 312-02451
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L MY0172SP
OTT 95.600.931.9.2
NEXEN 928000
ASUTEC A-1200-DW-15
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Ritter-Bader 701061-900-32-000
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E+H FMD630-KB4H2EA1CY4[L3T]
DEMAG ID:87658784
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WEBER-HYDRAULIK EEPDRDM3-05-315-4-24V
STOBER Serial-No.2173800 P721SGR0070ME
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NEDERMAN "55021530 DFC-08M 230V/11VACW CNTRL V 24VDC"
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interface 1710AGK-5KN
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ATEG KEYBOAITHTRACKINGBALL,ArticleNo:098-105493serialNo:00014,,1580.9905067
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REXROTH R160720231
WIKA A-10    4-20MA  0-40MPA 1/4mnpt
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bauer BG50-11/DSE09SA4
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PERSKE VS 31.09-2
G.MAIER 300-947-170-308
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CRYOTHERM 78206067
CRYOTHERM 78206065