Protection structure with blowout proof stem, low coefficient of friction bearings and so on.
阀杆采用防吹出保护结构，低摩擦系数的轴承等。
Cast bronze body and end piece, blowout proof silicon bronze stem or 316 stainless steel ball and stem are optional (66 trim).
铸青铜阀体和连接端口，防吹出硅青铜阀杆或316不锈钢球体和阀杆为选配件(66阀内件)。
Cast bronze body and end piece, blowout proof silicon bronze stem or 316 stainless steel ball and stem are optional (66 trim).
铸青铜阀体和连接端口，防吹出硅青铜阀杆或316不锈钢球体和阀杆为选配件(66阀内件)。
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