Stainless steel flanged butterfly valves are widely used control valves in fluid pipeline systems, primarily for cutting off or regulating the flow of media. Their core structure consists of the valve body, butterfly plate, valve stem, sealing ring, and flange connection components. Both the valve body and butterfly plate are made of stainless steel, commonly 304, 316, and 316L, possessing excellent corrosion resistance, oxidation resistance, and high mechanical strength, making them suitable for operating environments involving water, steam, oil, acid and alkali solutions, and some chemical media.
The flange connection allows for a secure and reliable connection between the valve and the pipeline system, facilitating installation and disassembly, and is particularly suitable for large-diameter applications in medium and low-pressure pipeline systems.
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Stainless steel flanged butterfly valve Technical parameters
Nominal Diameter: DN50～DN1000
Seat Seal: Butadiene Rubber, PTFE
Applicable Temperature: -20ºC～+150ºC
Seat Seal: Alloy Steel, Stellite STL Alloy
Applicable Temperature: -550ºC
Nominal Pressure: 1.0Mpa～1.6Mpa
Connection Method: Flange
Actuation Method: Manual, Worm Gear, Pneumatic, Electric
Valve Body Material: Cast Iron, Ductile Iron, Cast Steel, Stainless Steel
Manufacturing Standard: GB (Chinese National Standard), DIN (German Standard), API (American Standard), ANSI (American Standard)
Applicable Media: Water, Oil, Gas, Powder, Liquid
Wide Applications: Petroleum, Chemical, Power, Environmental Protection, Water Conservancy, Heating, Water Supply and Drainage, Industrial, Machinery
Stainless steel flanged butterfly valve Structural Components
- Valve Body: Cast from stainless steel, offering excellent corrosion resistance, strength, and sealing performance. It is typically circular in shape with internal channels to allow media flow.
- Dish Plate: A key component of the valve, usually disc-shaped, mounted within the valve body and connected to the actuator via the valve stem. The dish plate rotates around the valve stem axis, thus opening and closing the valve and controlling the flow rate.
- Valve Stem: Connects the dish plate to the actuator, transmitting torque to ensure accurate rotation of the dish plate to the desired position. The valve stem is typically made of stainless steel, providing sufficient strength and wear resistance to ensure proper valve operation.
- Sealing Pair: Includes the sealing surface on the dish plate and the sealing seat on the inner wall of the valve body. The sealing pair ensures a tight seal when the valve is closed, preventing media leakage. Common sealing materials include rubber and PTFE, selected based on the specific media and operating conditions.
- Flanges: Located at both ends of the valve body, used to connect the valve to the pipeline. The flange has bolt holes, and the valve is fastened to the flange of the pipeline by bolts to form a complete pipeline system.
Stainless steel flanged butterfly valve Features and Advantages
- High Strength and Corrosion Resistance: The valve body is made of high-quality stainless steel, cast or forged, possessing high strength and corrosion resistance, enabling it to adapt to various harsh working conditions.
- Excellent Sealing Performance: The valve seat and butterfly plate fit tightly together to form a sealing surface. The high-quality stainless steel valve seat material ensures that the valve maintains good sealing performance even after prolonged use.
- Flexible Flow Regulation: The butterfly plate's rotation angle can vary between 0° and 90°. When rotated to 90°, the valve is fully open. This structural feature allows the stainless steel flanged butterfly valve to achieve precise regulation and shut-off of fluid flow.
- Easy Installation and Maintenance: Flange connection is the primary connection method between the valve and the piping system, facilitating installation and disassembly. Furthermore, the stainless steel flanged butterfly valve's simple structure, small size, and light weight make maintenance and upkeep easier.
Applications of Stainless Steel Flanged Butterfly Valves
Stainless steel flanged butterfly valves are widely used in many industrial fields due to their excellent performance:
1. Water Supply Systems: Used in urban water supply, sewage treatment, etc., for regulating flow and cutting off water flow.
2. Chemical Industry: Suitable for controlling corrosive media, such as acids, alkalis, and other chemical liquids.
3. Oil and Gas Industry: Used for opening, closing, and regulating pipeline transportation systems; resistant to high pressure and corrosion.
4. Pharmaceutical and Food Industries: Due to the stainless steel material's compliance with hygiene standards, it can be used in applications requiring high cleanliness.
5. Power Industry: Used for fluid control in cooling water systems and steam pipelines.
Stainless steel flanged butterfly valve factory
