... end/ socked-welded and butt-welded endSize: 3/8''-4'' Flanged end & Blow-out proof stem & Fire safe construction & Anti ... , CF3M, etc.Ball and Stem: SS304, SS316, SS304L, SS316L, etc.Valve Seat: PTFE / RPTFE / PCTFE / PEEK / DEVLON, etc.Operation: pneumatic ... We have obtained certificates of CE, ISO 9001.Fuzhou Lilai Valve Fittings Co., Ltd. 3pcs Full Port 1000 wog Threaded Stainless Steel Ball Valve