ZT9928 manual slurry gate valve is divided into clamp type and integral type, and the clamp valve body seal adopts "U" type and "T" type composite structure in composite configuration. The integral valve body seal adopts the "O" composite sealing ring structure, which overcomes the shortcomings of the original clamp-on slurry valve using the "U" type sealing gasket after being forced, and the medium leakage. It has many advantages such as simple structure, small size, light weight, small flow resistance, medium is not easy to settle in the valve body, and easy installation. Used in papermaking, petrochemical, mining, drainage, food and other industries.