Key Applications And Selection Points of High-performance Butterfly Valves in The Petrochemical Industry

1. Flow regulation and control
   In petrochemical production, precise control of flow is one of the key factors to ensure stable and efficient production processes. High-performance butterfly valvescan achieve precise control of fluid flow by adjusting the rotation angle of the butterfly disc. For example, in the crude oil transportation pipeline of a refinery, butterfly valves can be used to regulate the flow of crude oil and ensure its stable transportation under different working conditions.

2. Medium isolation and shutoff
   The sealing performance of high-performance butterfly valves is excellent, enabling reliable isolation and shutoff of media. In the petrochemical industry, many pipelines need to cut off fluid supply when repairing or replacing equipment. The fast opening and closing characteristics of butterfly valvesmake them ideal shutoff devices. For example, in the production process of chemical raw materials, butterfly valvescan be used to cut off corrosive media such as acids and alkalis to ensure safety during equipment maintenance.

3. Corrosion resistance and high-temperature application
   Many media in the petrochemical industry are highly corrosive or need to work in high-temperature environments. High-performance butterfly valves use corrosion resistant materials and special coatings to withstand these harsh conditions. For example, fluorine-lined butterfly valves can effectively resist the corrosion of media such as strong acids and alkalis by using the corrosion resistance of fluoroplastics. In addition, metal-sealed butterfly valves can maintain stable sealing performance in

   high-temperature environments.

Key points for selecting high-performance butterfly valves

1. Operating parameters
   Accurately determining operating parameters is the key to selection. First, it is necessary to clarify the type of fluid, such as water, steam, oil or corrosive medium. Different fluids have different requirements for valve materials. Secondly, determine the working pressure and temperature range to ensure that the selected butterfly valve can withstand the actual working conditions.

2. Flow characteristics
   Select the appropriate flow characteristics according to actual needs. Common flow characteristics include linear, equal percentage and quick opening. For example, in occasions that require quick opening or closing, such as emergency shutoff systems, butterfly valves with quick opening flow characteristics should be selected.

3. Sealing performance
   In the petrochemical industry, the isolation and shutoff of media are crucial. The sealing performance of high-performance butterfly valves should meet the working conditions, especially when dealing with corrosive or dangerous media. For example, metal-sealed butterfly valves are suitable for high-temperature and high-pressure working conditions, while soft-sealed butterfly valves are suitable for occasions requiring zero leakage.

4. Connection method
   The connection methods of butterfly valves mainly include wafer type, flanged type and welded type. Wafer connection is suitable for low-pressure and small and medium-sized diameter pipelines, and is convenient for installation and disassembly; flanged connection is suitable for medium-high pressure and large-diameter pipelines with better sealing performance.

5. Material selection
   According to the corrosiveness of the medium and working conditions, select the appropriate butterfly valve material. For example, in a highly corrosive environment, fluorine-lined butterfly valves can be selected; in high-temperature and high-pressure working conditions, metal-sealed butterfly valves should be selected.