Sludge discharge valve is mainly used for the discharge of sediment and impurities in water and sewage, widely used in water supply and drainage, sewage treatment and industrial piping systems. It is suitable for normal to medium temperature working conditions, and the working temperature is generally 0℃ to 80℃. Its main function is to effectively exclude pipeline sediments, prevent blockage, and safeguard the smooth flow of the system. Valve body materials are mostly cast iron, stainless steel or carbon steel, seals with wear-resistant rubber, durable structure, easy to operate, adapt to a variety of complex working conditions, to ensure long-term stable operation of the equipment.