diaphragm valve 1.Material:cast iron,ductile iron,cast steel 2.Size:from DN50~1600mm 3.GB,ANSI, ... 2) Seal: PTFE3) Body: cast iron,ductile iron4) Disc: cast iron/ductile iron5) Bonnet: cast iron/ductile iron 6) Stem: carbon/stainless steel/brass ... 7) Type: flange connetion8) Pressure :125LBS/250LBS MSS SP-70,PN10/16 cast iron ...