Introduction
Butterfly valves control flow. They control the flow of liquids, gases, and slurries in pipelines. These have a flat disc on a spindle that can be turned to control the valve’s opening and closing. People widely use butterfly valves. They use them because of their design, small size, low price, and lightweight. They also use them because they open and close fast and are easy to maintain. To give readers background about butterfly valves, this article will cover the various types and their traits.
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The primary and most important types of Butterfly Valves
High-Performance Butterfly Valves
Butterfly valves are for use in demanding applications. They need high performance, especially anti-bypass, and tightness. They employ a versatile seat commonly constructed from elastomers such as EPDM that can enclose perfectly to the valve disc. These valves have high pressure and heat resistance. They are suitable for use in fuel and chemical processing. The disc and seals are made of material with better corrosion resistance. This makes them last longer. To learn more about high-performance butterfly valves, go to the next page.
Double Eccentric Butterfly Valves
The flange pattern of the double eccentric butterfly valves is such that the disc is not axially aligned with the shaft. This enables equal distribution of sealing force on the disc and seat whenever the valve is shut. It counterbalances any wear in the seat and assists in delivering bubble-tight shutoff even after use for long periods. They are ideal for use where there is little or no leakage between the seats, like in gas or liquid pipelines and vents. For more types of these valves, click this link.
Triple Eccentric Butterfly Valves
Triple eccentric butterfly valves refer to the positioning of the shaft and the center of the disc, offset by three levels. This gives an even higher degree of seal flexibility to seal the disc well on the seat with no leakage. Triple eccentric valves have the best-shut tightness. They are used in severe services where minimal leakage is allowed. It is used in fuel containment systems and vapor management equipment. It is also used in liquid oxygen distribution systems. For more information on some features of triple eccentric butterfly valves, click this link.
The Triple Eccentric Butterfly Valves are high-performance and famous in the piping industry.
These valves have triple eccentric elements. They also have high-flexing seats. This leads to permanent valve sealing, which does not deteriorate over time due to wear or distortion of the seat. The flexible seat and triple offset enable the establishment of bubble-tight sealing every time the valve is cycled. They are for use where valve availability is vital. They are for critical applications that cannot allow for downtime due to maintenance. Learn more about the additional features of premium range triple offset butterfly valves here.
Lined Butterfly Valves
The valves have a lined body and a sealing surface. They are coated with protective lining to cut corrosion, wear risk, and avoid product adulteration. Lining materials may include plastic, rubber, glass, and special alloys. The choice depends on the construction material and the media’s temperature. This lets them handle corrosive chemicals, oils, gases, slurry, or food products. It makes lined butterfly valves right for operations where the medium is hostile to the metal seating of the butterfly valve. Click to read more about the selection process of the liner material for specific applications.
Fire-Safe Butterfly Valves
These valves have particular innovations. They meet fire safety requirements. They are intended to shut automatically when overheated, and fire-door seals help prevent the escape of fires in a fire situation. The valve body materials do not fail when temperatures or pressure build up high, as with regular valves. This keeps the shutoff of the valve’s closure to prevent fire outcome of distributing fuel all over in case of fire. The valves are fire-safe. They can be used in the oil and gas industries, especially on ore platforms. See other fire safety aspects of butterfly valves manufactured for oil rigs.
Conclusion
I have also discussed some of the major types of butterfly valves. They are: high-performance triple offset, lined, and fire-safe. The choice of butterfly valve depends on the system’s pressure and flow rate. It also depends on the needed sealing, the type of fluid, and the service conditions. Suppose the butterfly valve is to be used in a specific application. In that case, consider the application’s requirements. They must be given due consideration. This is to ensure that a suitable valve can be selected to offer the best performance throughout the valve’s service life. Click for more details on your piping system’s appropriate butterfly valve configuration.
