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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> 蝶阀 上海阀� 标准阀� 简今�蝶阀启闭件是一个圆盘形的蝶板，在阀体内绕其自身的轴线旋转，从而达到启闭或调节的阀门叫蝶阀。蝶阀全开到全关通常是小�?0度　，蝶阀和蝶杆本身没有自锁有力，为了蝶板的定位，要在阀杆上加装蜗轮减速器。采用蜗轮减速器，不仅可以使蝶板具有自锁能力，使蝶板停止在任意位置上，还能改善阀门的操作性能� 　　工业专用蝶阀的特点能耐高温，适用压力范围也较高，阀门公称通径大，阀体采用碳钢制造，阀板的密封圈采用金属环代替橡胶环。大型高温蝶阀采用钢板焊接制造，主要用于高温介质的烟风道和煤气管道� 蝶阀的优点如下： 1. 启闭方便迅速、省力、流体阻力小，可以经常操作� 2. 结构简单，体积小，重量轻� 3. 可以运送泥浆，在管道口积存液体*少� 4. 低压下，可以实现良好的密封� 5. 调节性能好� 蝶阀的缺点如下： 1. 使用压力和工作温度范围小� 2. 密封性较差� 　　蝶阀按结构形式可分为偏置板式、垂直板式、斜板式和杠杆式。按密封形式可分为较密封型和硬密封型两种。软密封型一般采用橡胶环密封，硬密封型通常采用金属环密封� 　　按连接型式可分为法兰连接和对夹式连接；按传动方式可分为手动、齿轮传动、气动、液动和电动几种� 蝶阀的安装与维护应注意以下事项： 1. 在安装时，阀瓣要停在关闭的位置上� 2. 开启位置应按蝶板的旋转角度来确定� 3. 带有旁通阀的蝶阀，开启前应先打开旁通阀� 4. 应按制造厂的安装说明书进行安装，重量大的蝶阀，应设置牢固的基础� 蝶阀系列产品: 进口蝶阀、手动蝶阀D71X/D41X、蜗轮蝶阀D373H/D343H/D371X/D341X。法兰蝶阀D41X/D43H/D341X/D343H。不锈钢蝶阀D373/343W。铝合金蝶阀D71X-16L。铸钢蝶阀、铸铁蝶阀, 偏心硬密封蝶阀、多层次硬密封蝶阀、弹性硬密封蝶阀D43Y/D73Y。电动蝶阀、电动对夹蝶阀D973H/D971X、电动法兰蝶阀D941X、D943H。电动软密封蝶阀D971X/972X/D941X、电动硬密封蝶阀D943H/D973H。手动软密封蝶阀D71/D72、单偏心软密封蝶阀FBEX、WBGX、WBEX、WBLX、FBPX、WBPX,气动蝶阀、气动真空蝶阀、气动法兰蝶阀D643H/D641X、气动对夹蝶阀D671X/D673H、气动软密封蝶阀D671X/D672X、气动硬密封蝶阀D673H。手动硬密封蝶阀D73H/D43H、。伸缩蝶阀SD343H、SD341X。支耳式蝶阀LTD371X。对夹式蝶阀D71X/D73H/D371X/D373H。对焊式碟阀D363H。信号蝶阀WBSX(XD371X)。衬胶蝶阀D371J。衬氟蝶阀D41F、D341F、半衬蝶阀D371FH。高温蝶阀D73/43Y。保温蝶阀BD343H。高压蝶阀、双向压硬密封D43H-100C/P。中线蝶阀。通风蝶阀D341W/D941W-6、电动调节蝶阀ZAJW-0.6。塑料蝶阀D71X/371X-6S。手动真空蝶阀GI� 阀体材质：铸铁、铸钢、不锈钢、铬钼钢。工作压�?.6-10MPA。工作温�?20°C- 550°C。阀门口径从 DN25-DN1200 。连接方弎�法兰、对夹或焊接� 驱动方式:手柄、蜗轮、气动、电动、链轮。适用介质:水、油品、气、蒸汽等。出自上海，“正材良工”，欢迎选购订制� </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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