... valve Size from DN50-1800mm High quality and competitive price Manual Knife gate valve, wafer type knife gate valve, Lug knife ... steel knife gate valve, Stainless steel knife gate valveSpecifications:Design and manufacture standard: GB/T, ANSI, JIS, DIN1). Pressure: 0.6 ... °Cpaper pulp,dirty water,coal slurry,ashes,compornds of water and slag.Materials of main parts Body,cover Gate Stem Seal ...