... valve Size from DN50-1800mm High quality and competitive price Manual Knife gate valve, wafer type knife gate valve, Lug ... , PTFE, Stainless steel, Hard Alloy 5). Working temperature: Rubber <100'C, Hard-seal< 425'C 6). Suitable Media: Paper pulp ... .0 1.61.5 2.41.1 1.8Rubber≤100°C Y/H≤425°Cpaper pulp,dirty water,coal ... stainless steel Rubber,TPFE,stainless steel,hard alloy Manual flanged knife gate valve