結(jié)構(gòu)特點與用途1．全關(guān)時手輪按順時針方向旋轉(zhuǎn)。2．可以安裝在管道的任何位置上，介質(zhì)從下往上流。Strucurefeaturesandusages:1.Whenfullyclosed,handwheelrotatesrotatesclockwise.2.Abletobemountedananypositiono