Large diameter elastic seat sealing gate valve is made of the best quality ductile iron or carbon steel casting, with high strength, light weight, accurate geometric size characteristics, gate plate has the function of interchange, equipped with helical bevel gear labor-saving mechanism, one person can be very easy to open and close, can also be installed according to the user's requirements to open and close indicator column, or electric, pneumatic actuator. Excellent sealing and anti-rust function, safe and reliable, long service life. Vertical horizontal installation, this large diameter elastic seat sealing gate valve is widely used in water supply and drainage systems, sewage treatment systems, municipal construction and mining, metallurgy, power plants and other industries.