Which is better, aluminum butterfly valve or cast iron butterfly valve

Which is better, aluminum butterfly valve or cast iron butterfly valve? This is a false proposition, because aluminum butterfly valves and cast iron butterfly valves have completely different uses, which can be said to be incomparable. Cast iron butterfly valves are mostly used in water systems, passing water, gas, and oil media, while aluminum butterfly valves are used in air conditioning and industry. 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, aluminum alloy material is much lighter than 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 less than that of cast iron.
3. Corrosion resistance and strength
Aluminum is easy to chemically react with water produced during combustion, and its corrosion resistance is not as good as that of cast iron.

In summary, the aluminum butterfly valve and the cast iron butterfly valve are two different materials and different purposes. You cannot directly compare the good and bad of the two. For ordinary water pipes, use cast iron butterfly valves. The air conditioning system pipes have aluminum. Alloy material butterfly valve. If you have purchasing needs, you can contact BAND Valve for quotation.

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