- 冠龙阀门J41W-16P不锈钢法兰截止阀
详细信息
品牌:北京冠龙阀门 型号:J41W-16P 材质:不锈钢 连接形式:法兰 公称通径:DN15-DN600 mm 适用介质:水;蒸汽;油品;各种高腐蚀化学介质 压力环境:常压 工作温度:常温 截止阀(stop valve,Globe Valve)的启闭件是塞形的阀瓣,密封面呈平面或锥面,阀瓣沿流体的中心线作直线运动。阀杆的运动形式,有升降杆式(阀杆升降,手轮不升降),也有升降旋转杆式(手轮与阀杆一起旋转升降,螺母设在阀体上)。截止阀只适用于全开和全关,不允许作调节和节流。
截止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。近年来,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。
法兰式截止阀执行标准 Administer Standard设计与制造 Design and Manufacture结构长度
Face To Face法兰尺寸
Flange Dimension压力-温度 Pressure Temperature Lating试验-检验 Inspection And TestGB122235GB12221GB9113 JB79GB9131GB/T13927 JB/T9092法兰式截止阀压力试验 Pressure Test公称压力NominalPressure1.62.54.06.410.016.0强度试验 Shell Test2.43.86.09.615.024.0水密封试验 Water Seal Test1.82.84.47.011.018.0上密封试验Backseat Test1.82.84.47.011.018.0气密封试验 Air Seal Test0.5-0.7法兰式截止阀主要零件材料及性能 Main Part Materials and Property体、盖、板 Body Cover Disc阀杆
Stem密封面 Sealing Face垫片
Sealing Shim填料
Packing工作温度℃ Working Temperature适用介质Suitable MediumWCB2Cr1313CrSTL木体材料With BodyMaterial尼龙Nylon增强柔性石墨Enhanced Flexible Graphite13Cr/柔性石墨1Cr13/Flexible Graphite08软钢08 Soft Steal0Cr18Ni9Ti0Cr17Ni12Mo2TiXD550F(T)PTFE柔性石墨增强柔性石墨Flexible GraphiteEnhanced Flexible GraphiteSFB/260SFP/260PTFE≤425水蒸汽油品WaterSteamPetroleumPtoductsWC138CrMoAl25Cr2MoV≤450WC6≤540WC9≤570C5 C12≤540ZGCr5Mo≤200硝酸类Nitric acidZG1Cr18Ni9Ti1Cr18Ni9Ti≤200醋酸类Acetic acidZG1Cr18Ni12Mo2Ti1Cr18Ni12Mo2Ti法兰式截止阀规格 主要尺寸和重量 Size Main Dimensions and Weight (mm kg)1.6MPaDNLDD1D2bn-φdHDo重量 Weight凸面法兰
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