Which is better, aluminum or cast iron butterfly valve

Which is better, aluminum butterfly valve or cast iron butterfly valve? This is a false proposition, because the uses of aluminum butterfly valves and cast iron butterfly valves are completely different, and it can be said that they are not comparable. Water treatment equipment, has a strong anti-condensation function.
So what are the differences between aluminum butterfly valves and cast iron butterfly valves? The main difference is that one is an aluminum alloy valve body and the other is a cast iron valve body.
1) Weight
Under the premise of meeting the strength requirements, the aluminum alloy material is much lighter than the cast iron material.
2) Volume
For the same reason, the specific gravity of aluminum is light, and the structural strength of aluminum per unit volume is smaller than that of cast iron.
3) Corrosion resistance and strength
Aluminum is prone to chemical reactions with water produced during combustion, and its corrosion resistance is not as good as that of cast iron body.
To sum up, aluminum butterfly valve and cast iron butterfly valve are two kinds of butterfly valves with different materials and different purposes. It is not possible to directly compare the advantages and disadvantages of the two. For ordinary water pipelines, cast iron butterfly valves are used. Aluminum alloy butterfly valve is used for the pipeline of the air conditioning system. If you have purchasing needs, you can contact Bundor Valve.