... 6Mpa)Main Materials(Body)Carbon Steel:WCBCast Iron:GG25(HT250,GGG45(QT450)Stainless Steel:CF3 ... system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics ... and jam.3, single seat, one-way sealing with pressure.ZHONGCHENG'S special advantages:1 ... DIN, AS, ISO, JIS,SANS etc Material cast iron, ductile iron, cast steel, stainless steel ( 304/CF8, 316 ...