The GAIRUI Cast Iron Wafer Knife Gate Valves are widely used in coal mine, power plant ash disposal, slag disposal, urban sewage treatment, food, health, medicine and other professional piping systems. The knife type gate valve has the advantages of simple and compact structure, reasonable design, light saving material, reliable sealing, light and flexible operation, small volume, smooth passage, small flow resistance, light weight, easy installation, easy disassembly and so on. It can work under the condition of working pressure 1.0MPa-2.5MPa and temperature -29-150 Degree C. The knife type gate valve has the shearing function, it can scrape the adhesive on the seal surface and automatically remove the sundries. The stainless steel gate can prevent the seal leakage caused by the corrosion. Valves of this type should be installed horizontally in pipes.