Knife gate valves are used to control or shut off the flow of high-density liquid working media, emulsions, and working media as powders and granules. They are used in sewage systems, sewage treatment plants and for industrial purposes. As standard, knife gate valves are manufactured as unidirectional. On request, knife gate valves can be made as bidirectional (XDV). On request, it is also possible to make a knife gate valve with a shape other than round: knife gate valve with a square shape, knife gate valve with a rectangular shape, knife gate valve with a triangular shape. The wedge seals can be made of such materials as: Butyl, NBR, Viton®, PTFE, metal / metal, EPDM, white silicone. Knife gate valve meets the requirements of the pressure directive PED - 2014/68/EU.