Cast Iron Butterfly Valve

The relationship between the opening of the cast iron butterfly valve and the flow rate basically changes in a linear proportion. If it is used to control flow, its flow characteristics are also closely related to the flow resistance of the piping. For example, if two pipelines are equipped with the same valve diameter and form, but the pipeline loss coefficient is different, the flow rate of the valve will be very different.

The main difference between cast iron butterfly valves and cast steel butterfly valves is the carbon content, which directly affects the strength and plasticity of the steel.
Cast iron is stronger and more brittle than cast steel, and cast steel has better plasticity and toughness than cast iron. Therefore, cast iron is generally used in pipelines with relatively low pressure and can only be used at room temperature. On the pipeline, due to the increase in pressure or temperature, the valve will have a certain amount of slight deformation, which is unfavorable to the cast iron butterfly valve. Compared with the cast iron butterfly valve, the cast steel butterfly valve can be used in pipelines with relatively high pressure or temperature.

GNEE Group is a one-stop valve supply group, specializing in the supply of various industrial valves such as butterfly valves, ball valves, check valves, globe valves, etc. Our products are widely used in the petrochemical industry. GNEE Group has established a foothold in the valve market with quality. If you have any questions, you can contact us at any time.

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