The Valve Disc Material of Concentric Type Butterfly Valve

The common valve disc materials for middle-line butterfly valves are as follows, with each material suitable for different working environmentsand media

Ductile lron:Known for its good strength, toughness, and impact resistance, ductile iron is commonly used in general industrial applicationsinvolving media such as water and gas. It is cost-effective, but its corrosion resistance is relatively poor.304 Stainless Steet: A widely used stainless steel material, 304 offers good corrosion resistance and is suitable for less aggressive corrosivemedia, such as water, air, and oil.316 Stainless Steel: Compared to 304, 316 stainless steel offers better corrosion resistance, especially in environments with more aggressivemedia like seawater, acidic substances, or saltwater.C9540 Aluminum Bronze: This material provides excellent corrosion resistance, wear resistance, and mechanical strength, and is widely usedin marine, shipbuilding, and chemical industries. Itis suitable for highly corrosive media such as seawater and saltwater.C95800 Aluminum Bronze: With higher strength and enhanced corrosion resistance, C9s800 is particularly suitable for marine environmentsand applications involving corrosive media like acids and chlorides.These materials are selected based on specific application requirements such as temperature, pressure, and the corosiveness of the media.ensuring the most suitable valve disc material for optimal performance.