Knife gate valves are common shut off valves in process industry, when large size, good tightness and full port is required. Specially different paper process pulps and other solid containing fluids, suspensions and slurries in process industry are suitable positions for knife gate valves.
Knife gate valves can be divided in two category by their body structure – valves with cast body and with pressed steel design. Pressed steel design can be used bigger sizes and with higher delta-P over the valve.
Also Knife gate valves can be separated by structure of slide. Slide gate valves have through going slide and those can be used for higher solid content and higher pressure difference over the valve than standard Knife gate valve.