Basically, the function of a butterfly valve is to control the flow of a liquid or gas through a tube or pipe. Generally, which type of materials include liquid, steam, gas, and air. Apart from this, some types of dry materials can also be passed through these units.
The butterfly valve comprises a circular disc. The components of the valve include an actuator, stem, dis, seat and body. Each of these components is available in different materials known as trim features. Based on the application, you want to go for the right model valve.
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Body: The body of the valve is made of different metals such as stainless steel, carbon steel, aluminum, ductile iron, cast iron, and exotic metals, just to name a few. You can find these units in lug and wafer style. The other type has tapped holes in it that allow you to bolt them to a mating flange. The valve seals the material when the valve is closed.
Disc: The disc part regulates the material flow in the conveying line. Apart from this, disc materials are chosen based on the application. Common materials include ductile, nickel-plated, epoxy coated, ductile iron, aluminum, and stainless steel.
Stem: The stem goes through the valve center, connects to the actuator and adjusts the disc for optimal material flow, and then closes off. Based on the size of the valve and application, stems can be constructed based on one or two pieces.
Butterfly valves are designed for a lot of applications, such as liquid, steam, gas, and air. These units are used to handle materials that are displaced by the disc. You may want to be careful when using these units in an abrasive or semi-abrasive application.
Overall, it’s a description of butterfly valves and their applications in different environments and systems.