PE4-卫生级三片式球阀/Sanitary 3-Piece Ball Valve
C2-国际法兰球阀/GB/T Flange Ball Valve
A2-美标法兰球阀/ANSI/ASME Flange Ball Valve
D2-德标法兰球阀/DIN Flange Ball Valve
对夹式中线蝶阀/Concentric Wafer Type Butterfly Valve
对夹式半凸耳中线蝶阀/Concentric Wafer Type Semi-lug Butterfly Valve
高性能双偏心蝶阀/High Performance Double Eccentric Butterfly Valve
双偏心法兰阀门/Double Eccentric Flanged Valve
