Robust body with raised seating surfaces ground to mirror - like finish . hard plug and body seat facings available . body and plug seats protected from line media in open - close positions 坚固耐用的阀体，配置具有研磨镜面光洁度的凸面阀座表面。可提供坚硬的阀塞和阀体阀座面。在开启-关闭位置，可防止管路流体介质进入阀体和阀塞阀座内。
