... steel / stailess steel Knife gate valve, Chain wheel knife gate valve, pneumatic knife gate valve, electric knife gate valve. Knife gate valveDesign and manufacture ... <100'C, Hard-seal< 425'C 6). Suitable Media: Paper pulp, Dirty Water, Coal Slurry, Ashes, etc/Our products ... are widely used in paper making factory, Coal Washing plants, Sewage treatment plants, slag ...