2pc快速失速球 2pc快速失速球 邮箱 下载 DESCRIBE MODEL:Q41F SIZE:1/2" -4" Body:stainless steel Seat:PTFE .PPL.RTPFE. PCTFE. STEM:stainless steel BALL:CF8,CF8M BODY Material:SS316 SS304 Pressure:1000WOG Temperature Range:-20°C--200°C Connection:Threaded Suitable medium:Water, stream,oil