... Knife gate valves with handwheel,pneumatic,electric JIS, ANSI,DIN,GB standard Size DN50-180 JIS Knife gate valve, cast steel / stailess steel Knife gate valve, Chain wheel knife gate valve, pneumatic knife gate valve, electric knife gate valve. Knife gate ... : Carbon Steel (WCB), Stainless Steel (SS304, SS316, SS301, 316L), Cast Iron 4). Seal: Rubber, PTFE, Stainless steel, Hard Alloy 5). Working ...