A flexible butterfly valve, also known simply as a butterfly valve, is a type of valve used in fluid handling systems to control the flow of liquids or gases. It falls under the category of quarter-turn valves, which means that it can be quickly opened or closed with a 90-degree turn of the valve handle or actuator.
Key features and components of a flexible butterfly gate valve include:
Body: The main body of the valve typically consists of a round or oval-shaped disc that is positioned in the center of the pipe. This disc rotates on an axis, allowing it to control the flow of the fluid.
Disc: The disc is connected to a rod or stem, which is attached to an actuator. When the actuator is turned, the disc either pivots to allow fluid flow or closes to block it.
Actuator: The actuator is the mechanism used to control the position of the disc. It can be manual (operated by hand), pneumatic (using air pressure), hydraulic (using liquid pressure), or electric (using electrical power).
Sealing Mechanism: The disc is often lined with a sealing material, such as rubber or elastomer, which creates a tight seal against the valve body when the valve is closed. This prevents leakage when the valve is in the closed position.
Lever or Handle: In manual butterfly valves, there is usually a lever or handle attached to the stem. Turning the lever or handle by 90 degrees rotates the disc and changes the flow of the fluid.
Types of Butterfly Valves:
Concentric: The disc is centered in the pipe and seals against an elastomer liner.
Doubly Eccentric (High-Performance): The disc is offset from the center, improving sealing capabilities and reducing wear.
Triple Offset (Metal-Seated): This advanced design reduces friction and wear while maintaining a tight seal, suitable for high-pressure and high-temperature applications.
Applications: Butterfly valves are commonly used in various industries, including water treatment, HVAC (Heating, Ventilation, and Air Conditioning), power generation, chemical processing, and more. They are preferred for their quick operation, relatively low cost, and ease of maintenance.
• Quick quarter-turn operation.
• Compact and lightweight design.
• Can handle large flows with low pressure drop.
• Cost-effective compared to some other types of valves.
• Easy to install and maintain.
|Flexible Butterfly Valves Specification|
|Normal Dimension||DN50-DN2000mm, Size 2"-80"|
|Working Pressure||PN10, 16, 25|
|Body material||Carbon Steel, Stainless Steel & Other Materials|
|Working Pressure||ANSI 150LB|
|Working Pressure||JIS 5K, 10K|
|Body Material||Cast Steel, Stainless Steel, Bronze B62|
|Disc Material||Cast Steel, Stainless Steel, Bronze B62|
|Stem Material||Cast Steel, Stainless Steel|
|Sealing Material||PTFE, Stainless Steel|
|Drive Operation||Hand wheel, Worm Gear, Pneumatic, Electric, Hydraulic, Electro-hydraulic, etc.|
|Service medium||Water, Sea Water, Sweage, air, oil, gas, sour, etc.|
|Flexible Butterfly Valve Price||$ 46.26 - $ 35|
|Duplex Steel Flexible Butterfly Valve Price||$ 85.35 - $ 135|
|Buy Flexible Butterfly Valves Best Price||$ 72.20 - $ 80|
|Flexible Carbon Steel Butterfly Valve Price||$ 68.34 - $ 35|
|Stainless Steel Flexible Butterfly Valve Best Price||$ 79.57 - $ 32|
|Super Duplex Steel Flexible Butterfly Valve Price||$ 67.35 - $ 55|
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