软密封蝶阀 Soft seal butterfly valve用途及特点Purpose and characteristic软密封蝶阀适用于温度≤135℃，公称压力≤1.6Mpa的食品、医药、化工、石油、电力、冶金、城建、轻纺、造纸等给排水、气体管道上作调节流量和截流介质的作用。其主要特点为Soft sealing butterfly valve is suitable for water supplying and draining, gas pipe as adjust flux and cut off medium in foodstuff, pharmacy, chemical industry, petroleum, electric power, light textile, paper making etc with temperature≤135℃, nominal pressure≤1.6Mpa. The main characteristic such as：1、设计新颖、合理、结构独特，重量轻，启闭迅速Novel and reasonable design, special structure, light and start and stop rapidly.2、操作矩小，操作方便，省力轻巧Tiny operative moment, operation conveniently and skillfully.3、可以任何位置安装、维修方便Installation in any position, easy to maintain.4、密封件可以更换、密封性能可靠达到双向密封零泄露It can exchange sealed component, antisepsis, reliable hermetical capacity and seal in double direction with zero leakage.5、密封材料耐老化、耐腐蚀，使用寿命长等特点Hermetical material aging resistant, antisepsis, and long service life etc.采用标准Adoption standard设计标准Design standard：GB/T12238-1989 ISO10631-1994 BSEN593-1998法兰连接尺寸Flange connection dimension: GB/T17241.6-1998 ISO7005-2 BSEN1092-2002结构长度Structure length: GB/T12221-1989 ISO5752-1988 BSEN558-1压力试验Pressure test: GB/T13927-1992 JB/T9092-1999 ISO5028-1993 BS6755-I-1986主要技术参数Main technology parameter公 称 通 径Nominal diameterDN50-DN2000公称压力（Mpa）Nominal pressure0.61.01.6试验压力(Mpa）Test pressure强度Shell0.91.52.4密封Seal0.661.11.76适用温度Appropriate temperature-40℃～135℃适用介质Appropriate medium空气、水、污水、蒸汽、煤气、油品等Air water sewage steam coal gas oil驱动形式Drive modality手动、蜗轮传动、气动、电动Hand, worm wheel drive, pneumatic drive,electric drive       主要零件的材质Material for main parts零件名称Parts name阀体Body球墨铸铁、铸钢、不锈钢Ductile cast iron, cast steel, stainless steel蝶板Disc灰铸铁、球墨铸铁、铸钢、不锈钢Gray cast iron, ductile cast steel, cast steel, stainless steel密封圈Seal ring各种橡胶、聚四氟乙烯Manifold rubber阀杆Stem2Cr13不锈钢Stainless steel填料PackingO型圈柔性石墨O type ring, flexible graphite 一、本蝶阀可以安装在空间任意角度的管道上，但不能倒装；The butterfly valve can be installed at any angle of the pipe except inversion;二、该蝶阀为单向使用，安装时请注意阀体上箭头表示为介质密封关闭压力方向；It is unilateral using valve. When installation, please notice that the arrowhead on the body should indicate direction of pressure closing;三、阀门安装前应完成以下工作：The works should te finished before installation:1、仔细核实阀门使用情况是否与其性能规范相符.Carefully check whether operating environment complies with the property criterion.2、蝶阀关闭安装为宜，焊接时应将阀门通道用盖板挡住，防止颗粒、杂物搓伤密封面，使用时再将蝶板打开，用户要求试压时，切记要用两端法兰对夹安装好后或试验台试压.It is better to install the valve in a state of closing, While welding , the gate of valve should be plugged up be cover board, and open the side when using, If you want to test the pressure, must be sure that the flanges of tow ends should be installed in wafer or tested on test-bed.四、本蝶阀与管道连接时，要求管道上使用对焊法兰或蝶阀专用法兰。如果采用平焊钢法兰时，必须要求法兰内孔不损坏，而且要求垫圈内孔与管道内孔一样大，保证垫圈能将蝶阀端面的内六角螺丝全部封住，以免压板和阀体装配处缝隙渗漏，管道两侧法兰必须平衡，各螺丝均匀拧紧；When the valve is connected with the pipe ,the flange used on pipe should be welded flange or special flange for butterfly valve, The flange of te tow side of pipe must be balanceable, and all of bolts and nuts should be screwed down;五、电动蝶阀出厂时已将控制机构的启闭行程调整好，为防止电源接通时方向搞错，用户在第一次接通电源前，要先手动把阀门开启至半开位置，再按电动开关，检查指示盘方向与阀门开启方向一致即可。Before leaving factory, the open and close route of control system has been adjusted. When the user gets through the power for first time. To avoid missing the direction, the user should open to hale-open position by hand, and then press the switch, finally check whether the sirection of indicator conforms to on-off of the valve.