DN40-100 Industrial butterfly valve

There are many types of butterfly valve materials, including the following：
1、 Grey cast iron and ductile iron materials
These two materials are commonly used in water system pipelines, and there are some differences between the two. The ductile iron material has a higher spheroidization rate and higher hardness. And the ductile iron material is better and has a longer service life.
2、 Cast steel material
Cast steel Butterfly Valves are generally used in high-temperature and high-pressure environments, such as steam and oil media.
3、 Stainless steel material
Stainless steel material has good anti-corrosion and rust prevention properties, so if the medium inside the pipeline has a certain degree of corrosiveness, stainless steel butterfly valves can be used. Additionally, if the pipeline environment is prone to metal corrosion, stainless steel butterfly valves can also be used.
4、 Aluminum alloy material
Aluminum alloy material has characteristics such as low water absorption, thermal insulation and cold insulation, and corrosion resistance. Aluminum butterfly valves are often used in air conditioning cooling water systems to prevent condensation.

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