阀门是工业管道上必不可少的组成部分,通常低、中压阀门如截止阀、闸阀等,是根据平面密封的原理设计的。一旦密封面受到损伤或腐蚀,就不能保证很好贴合而产生内漏。而阀盖的填料老化后会造成外泄。泄漏严重时必须更换。因此,这类阀门在制造时,必须提高阀瓣和阀座上密封面的加工精度,在使用时必须经常更换填料和整修密封面,使成本提高,维修量增大。柱塞阀采用径向密封原理,它以不锈钢 Valves are an integral part of industrial pipelines and are typically designed for low and medium pressure valves such as globe valves and gate valves based on the principle of a planar seal. Once the sealing surface is damaged or corroded, there is no guarantee that it will fit well and cause internal leakage. The valve cover filler will cause leakage after aging. Serious leakage must be replaced. Therefore, this type of valve in the manufacture, we must improve the valve flap and seat sealing surface machining accuracy, in the use of frequent replacement of packing and renovation of the sealing surface, the cost increase, increased maintenance. Plunger valve radial seal principle, it is stainless steel