Slag lock valve has the characteristics of small fluid resistance, smooth flow, fast opening and closing, and easy automatic control, so it has been more and more widely used.

Floating, fixed, V-type high-performance slag lock valves are widely used in coal chemical industry, polycrystalline silicon, petroleum, chemistry, power, metallurgy, cement, sugar, mining and other industries.

The slag lock valve not only has the structural characteristics of preventing misoperation, preventing stem from flying out and setting up a driving device installation platform, but also has the following technical characteristics. The ball and valve seat of slag lock valve are completely sealed by metal and metal. In order to ensure the reliable sealing of the valve under various temperatures and pressures, according to the different working conditions and requirements of users, advanced hardening technologies of ball and valve seat can be adopted, including supersonic spraying, nickel-based alloy spraying, special hardening of the surface, carbide spraying and high strength. High hardness ceramics and other materials, sphere and seat surface hardness can generally reach HRC75 or above, the highest can reach HRC90 or above. Tungsten carbide wear resistant alloy is used in feed and discharge. Sealing surface material not only has the properties of temperature resistance, friction resistance, impact resistance and so on. Slag lock valves can be applied to most of the harsh working conditions. Especially in coal chemical industry, polycrystalline silicon, petroleum, building materials, metallurgy, power, mining and other industries are used more.