【上海精工阀门厂 技术资讯】
启闭件是个圆盘形的的碟板，在阀体内绕其自身的轴线旋律，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 子90度，蝶阀和蝶杆本身没有自锁能力，为了蝶板的定位，要在阀杆上加速蜗轮减速器。采用蜗轮加速器，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。
Thevalve which its opening&closing part it round disc,and turns around its own axisin valve bodyto open,close or adjust,is called'butt'e rfly valve.Thebutterfly valve is less than 90 0 in full-open or full-close.and the butterfly valve and valve stem haven'tself- lock capability, but to fix the disc, it is necessarytoinstall aworm reducer on valve stem. With the worm reducer, not only make the discin ability of self-lock and stop at any position, but also can improvtheoperation performance ofvalve.
Industrial butterfly valve has thefeatures such as high temperature resistance.applicable to big pressure range and big nominaldiameter, adoptingthematerialofcarbon steel.andthesealring ofvalve plateadopts metalringinstead ofrubberring. Largehigh- tempbutterflyvalvedoptsthesteel-welded material, and ismainlyapplied on chimneyand gas pipelinewith high-temp medium.
