What body material is commonly used for manual butterfly valves?

The common body materials of manual butterfly valves are: cast iron, ductile iron, cast steel, and stainless The common valve body materials of manual wafer butterfly valves are: cast iron butterfly valve, ductile iron butterfly valve, cast steel butterfly valve, and stainless steel butterfly valve.

Cast Iron Manual Butterfly Valve

Cast iron is cast iron with flake graphite, because the fracture is dark gray when broken, so it is called gray cast iron. Casting performance, cutting performance and wear resistance of cast iron are very good.
The disadvantage is that the strength, plasticity and toughness are lower than other cast irons.
Cast iron butterfly valve is suitable for weak acid and weak alkali medium such as water and air, but not suitable for pipelines with hydrochloric acid and nitric acid medium.

Ductile Iron Manual Butterfly Valve

Ductile iron is a high-strength cast iron material with very high strength, toughness and wear resistance, and its comprehensive performance is close to that of steel.
Ductile iron butterfly valve has certain corrosion resistance, and its performance is much higher than that of gray iron butterfly valve. Its applicable medium includes steam, general gas and oil.

Stainless Steel Manual Butterfly Valve

Stainless steel refers to steel that is resistant to weak corrosive media such as air, steam, and water, and chemically corrosive media such as acid, alkali, and salt, also known as stainless acid-resistant steel.
Stainless steel butterfly valve has good performance and can be used in more severe working conditions. It is used in some medium pipelines with ultra-high temperature, ultra-low temperature and strong acid and alkali corrosion. long.

For more detailed butterfly valve body material issues, please consult VALTECCN, 24-hour service, butterfly valve selection, butterfly valve quotation, butterfly valve drawings, butterfly valve suppliers and manufacturers in China.