Lanhao Steel Plant Ball Valve (Lance Check Valve) DN25 Product Overview
The Lanhao Steel Plant Ball Valve (also known as Lance Check Valve) is specifically designed for blast furnace pulverized coal injection systems, with a model number of DN25. It is made of carbon steel and comes in styles including square, elbow, and date-pit types. Its core function is to prevent the backflow of high-temperature pulverized coal, ensuring the sealing of the coal injection lance connection and avoiding the leakage of hot gas.

Technical Parameters and Performance
Nominal pressure: 0.6MPa, shell test pressure 0.9MPa, seal test pressure 0.66MPa.
Applicable temperature: ≤350°C, compatible with media such as pulverized coal and dust-laden gases.
Sealing performance: High-precision manufacturing process, excellent air tightness, and strong pressure resistance.

Application Scenarios and Advantages
Installation location: At the coal injection lance interface of the blast furnace tuyere.
Features: Compact structure, low failure rate, and support for customized requirements (such as special materials or specifications).

Common Issues and Maintenance
Clogging treatment: Regularly inspect the accumulation of pulverized coal inside the valve body and clean the sealing surface.
Material upgrade: For higher corrosion resistance, a stainless steel version is available.
Note: Specific pricing and stock availability must be confirmed by contacting the supplier.