斜面上装式球阀-thq41f斜面上装式球阀

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球阀>>上装式球阀>>斜面上装式球阀产品名称：斜面上装式球阀产品型号：THQ41F产品口径：DN15-200产品压力：0.6~6.4Mpa产品材质：铸钢、不锈钢、合金钢等产品概括：生产标准：国家标准GB、机械标准JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产。阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、WC9、20#、25#、锻钢、A105、F11、F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等。工作压力1.0Mpa-50.0Mpa。工作温度：-196℃-650℃。连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍。驱动方式：手动、气动、液动、电动。  产品详细信息 ·斜面上装式球阀产品结构及用途：本球阀采用双面双层密封结构，每面都有软硬的两层副密封，即软密封为先行密封，当软密封长期使用而老化后，其硬密封开始作后补密封，克服了因密封老化而泄漏的致命弱点。本球阀阀基上装式结构形式，可实现管道现场维修优点。适用于：化工、石油、天然气、冶金、制药、食品、环保、城建等行业。 ·斜面上装式球阀主要性能规范公称通径402.5MPa试验压力强度试验试验介质(水)3.75上密封试验2.75密封试验2.75气密封试验(气)0.6工作温度-20～232℃最大工作压力2.5适用介质水、油、气·斜面上装式球阀主要外形尺寸公称压力(Mpa)公称通径LDD1D2D6bf/f1z-φdWH(mm)mmmmmmQ411.6突面15130956545-1424-1410062201401057555-144-1412068251501158565-144-14160753216513510078-164-18180854018014511085-164-182009550200160125100-1634-1825011065220180145120-184-1830013080250195160135-208-18400155100280215180155-208-18500180125320245210185-228-18600250150360280240210-248-23800275200400335295265-2612-2310003452.5斜面上装式球阀主要外形尺寸2.5突面15130956545-1624-1410062201401057555-164-1412068 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11/2"DN4060482"DN5085.567.521/2"DN651801503"DN80240195口径/型号精铸三通3041/2"DN1573.53/4"DN201021"DN2512911/4"DN3224311/2"DN403572"DN50465铝槽车球阀DN50只195DN65只255DN80只330DN100480一、阀门的选型步骤1.明确阀门在设备或装置中的用途，确定阀门的工作条件：适用介质、工作压力、工作温度等等。2.确定与阀门连接管道的公称通径和连接方式：法兰、螺纹、焊接等。3.确定操作阀门的方式：手动、电动、电磁、气动或液动、电气联动或电液联动等。4.根据管线输送的介质、工作压力、工作温度确定所选阀门的壳体和内件的材料：灰铸铁、可锻铸铁、球墨铸铁、碳素钢、合金钢、不锈耐酸钢、铜合金等。5.确定阀门的型式：闸阀、截止阀、球阀、蝶阀、节流阀、安全阀、减压阀、蒸汽疏水阀、等。6.确定阀门的参数：对于自动阀门，根据不同需要先确定允许流阻、排放能力、背压等，再确定管道的公称通径和阀座孔的直径。 7.确定所选用阀门的几何参数：结构长度、法兰连接形式及尺寸、开启和关闭后阀门高度方向的尺寸、连接的螺栓孔尺寸和数量、整个阀门外型尺寸等。8.利用现有的资料：阀门产品目录、阀门产品样本等选型适当的阀门产品。二、阀门的选型依据1.所选用阀门的用途、使用工况条件和操纵控制方式。2.工作介质的性质：工作压力、工作温度、腐蚀性能，是否含有固体颗粒，介质是否有毒，是否是易燃、易爆介质，介质的黏度等等。3.对阀门流体特性的要求：流阻、排放能力、流量特性、密封等级等等。4.安装尺寸和外形尺寸要求：公称通径、与管道的连接方式和连接尺寸、外形尺寸或重量限制等。⑤对阀门产品的可靠性、使用寿命和电动装置的防爆性能等的附加要求。（在选定参数时应注意：如果阀门要用于控制目的，必须确定如下额外参数：操作方法、最大和最小流量要求、正常流动的压力降、关闭时的压力降、阀门的最大和最小进口压力。）根据上述选型阀门的依据和步骤，合理、正确地选型阀门时还必须对各种类型阀门的内部结构进行详细了解，以便能对优先选用的阀门做出正确的抉择。管道的最终控制是阀门。阀门启闭件控制着介质在管道内的流束方式，阀门流道的形状使阀门具备一定的流量特性，在选型管道系统最适合安装的阀门时必须考虑到这一点。三、阀门选型原则1.截止和开放介质用的阀门流道为直通式的阀门，其流阻较小，通常选型作为截止和开放介质用的阀门。向下闭合式阀门（截止阀、柱塞阀）由于其流道曲折，流阻比其他阀门高，故较少选用。在允许有较高流阻的场合，可选用闭合式阀门。2.控制流量用的阀门通常选型易于调节流量的阀门作为控制流量用。向下闭合式阀门（如截止阀）适于这一用途，因为它的阀座尺寸与关闭件的行程之间成正比关系。旋转式阀门（旋塞阀、蝶阀、球阀）和挠曲阀体式阀门（夹紧阀、隔膜阀）也可用于节流控制，但通常只能在有限的阀门口径范围内适用。闸阀是以圆盘形闸板对圆形阀座口做横切运动，它只有在接近关闭位置时，才能较好地控制流量，故通常不用于流量控制。3 .换向分流用的阀门根据换向分流的需要，这种阀门可有三个或更多的通道。旋塞阀和球阀较适用于这一目的，因此，大部分用于换向分流的阀门都选取这类阀门中的一种。但是在有些情况下，其他类型的阀门，只要把两个或更多个阀门适当地相互连接起来，也可作换向分流用。4.带有悬浮颗粒的介质用阀门当介质中带有悬浮颗粒时，最适于采用其关闭件沿密封面的滑动带有擦拭作用的阀门。如果关闭件对阀座的来回运动是竖直的，那末就可能夹持颗粒，因此这种阀门除非密封面材料可以允许嵌入颗粒，否则只适用于基本清洁的介质。球阀和旋塞阀在启闭过程中对密封面均有擦拭作用，故适宜用在带有悬浮颗粒的介质中。目前，无论在石油、化工，还是在别的行业的管道系统，阀门应用、操作频率和服务千变万化，要控制或杜绝那怕是低微的泄漏，最重要、最关键的设备还数阀门。管道的最终控制是阀门，阀门在各个领域的服务和可靠表现是独一无二的。