Butterfly Valve Overview:

A butterfly valve is a type of quarter-turn valve that controls the flow of fluid through a pipeline by means of a disc mounted on a rotating shaft. The disc, which resembles the shape of a butterfly, is positioned perpendicular to the flow direction when the valve is closed, effectively blocking the passage of fluid. Conversely, when the valve is open, the disc is rotated parallel to the flow direction, allowing fluid to flow freely through the valve.

• Design: It consists of a disc mounted on a rotating shaft. When the valve is open, the disc is turned parallel to the flow direction, allowing fluid to pas s through. When the valve is closed, the disc is rotated perpendicular to the flow direction, blocking the flow of fluid.
• Operation: Butterfly valves operate using a simple quarter-turn mechanism. They are opened or closed by rotating the disc a quarter turn using a lever, gear operator, or actuator.
• Advantages: Butterfly valves offer several advantages, including low cost, low pressure drop, and quick operation. They also have a compact design and require minimal maintenance.

What are butterfly valves used for?

• Flow Regulation: Butterfly valves are frequently employed to regulate the flow of fluids in pipelines, such as water, air, gas, or slurries. They can be used to adjust flow rates as needed for optimal system performance.
• Isolation: Butterfly valves are often used for on-off service, providing a tight seal to isolate sections of pipelines or equipment from the rest of the system. This is particularly useful for maintenance, repair, or emergency shutdowns.
• Water Treatment: Butterfly valves are widely used in water treatment plants for controlling the flow of water, chemicals, and slurry in various processes, including filtration, sedimentation, and disinfection.
• Chemical Processing: In chemical processing plants, butterfly valves are used to control the flow of corrosive chemicals, acids, and solvents. They provide reliable shut-off and control in reactors, storage tanks, and process equipment.
• Oil and Gas Industry: Butterfly valves are utilized in the oil and gas industry for controlling the flow of crude oil, natural gas, and petroleum products in pipelines, refineries, and offshore platforms.
• Power Generation: Butterfly valves play a critical role in power generation facilities, including fossil fuel, nuclear, and renewable energy plants. They are used in boiler feedwater systems, cooling water circuits, and steam turbines.

Types:

• Wafer Butterfly Valve
• Lug Butterfly Valve
• Concentric Butterfly Valve
• AWWA Butterfly Valve
• Triple Offset Butterfly Valve
• Double Offset Butterfly Valve
• Flanged Butterfly Valve

Description:

• Body Material: Cast Carbon steel (WCC,WCB, WC6), Stainless Steel, [SS316, SS304, SS316L, SS904L, CF8, CF8M, F31L, F91], Duplex Steel and Super duplex Steel (F51,F53,F55) , Cast iron, Ductile Iron.
• Size – 2” – 48”
• Class: 150 to 300; PN 6 – PN 25
• Ends: Wafer, flanged, lug
• Operations: Lever and Gear operated, Pneumatic and Electric actuated.