The SGV is also called manual knife gate valve and knife gate valve. The utility model relates to a valve in which the gate plate and the valve seat are always in close contact with each other, and the principle is that a circular opening having a diameter of a diameter is opened on the gate plate, and the circular opening of the gate plate is completely separated from the diameter through the shutter opening and closing. The action that matches. The advantage of this valve is that the valve body has no groove, the medium does not block and block, and has full-diameter circulation characteristics, and the sealing structure can be divided into a soft seal and a hard seal structure.

Development History

SGV entered China from the 1980s. In less than two decades, its use has expanded from the general field to a wider range of industries. Coal preparation, drainage, and slagging from mine power plants. It has developed into urban sewage treatment, from general industrial pipelines to specialized pipeline systems such as food, health and medicine. The ultra-thin SGV completely solves the flow resistance of ordinary gate valves, slab gate valves, ball valves, globe valves, regulating valve butterfly valves, etc. Due to its small size, small flow resistance, light weight, easy installation and easy disassembly. Difficulties such as heavy weight, difficult installation, and large floor space. After the SGVappeared, a large number of general-purpose shut-off valves and regulating valves have been replaced. To date, the largest use of global SGV is in the United States and Japan.