Resilient renewable Seated,two-way sealing ,zero leakage,long lifetime,heat-resistant,corrosion resistance,well seal performance knife gate valveWith GS,CE ... The picturs below designed before are served as reference. knife gate valve type features:1, seal by structural ceramics, can prevent ... slag and jam.3, single seat, one-way sealing.4.the valve plate design is flat with blade shape, easy to ...