... valve Size from DN50-1800mm High quality and competitive price Manual Knife gate valve, wafer type knife gate valve, ... , Hard Alloy 5). Working temperature: Rubber <100'C, Hard-seal< 425'C 6). Suitable Media: Paper pulp, Dirty Water, ... Body testing (MPa)Seal tesing (MPa)Working temperature (°C)Appropriate media1.0 1.61.5 2.41.1 1 ... .8Rubber≤100°C Y/H≤425°Cpaper pulp,dirty water,coal slurry ...