Qingdao JunZheng Machinery Manufacture Co.,Ltd manufactures knife gate valve for applications such as pulp and paper mills industry,mineral processing,tailing systerms,mining industry,waste/effluent water,sludge handling,ash handling,power station and more since 1992,as our knife gate slurry valve cycles open and closed achieving 100% isolation without leakage to atmosphere.our slurry valve is size from DN50 to DN3000,our superior knife gate valve are available as a bidirectional resilient valve and a unidirectional metal seated valve,ductile iron(included GGG40) and stainless steel design are available,its difference and superior is from high performance quality and (cost-effective )reasonable price.learn more,please contact email,thank you!