Large size butterfly valves are needed for high flow rate applications and to handle larger pipe diameters. They come in various designs to meet specific performance requirements.
Large Size Double Flange Butterfly Valve
Double flange butterfly valves are a common type of large size butterfly valve, needed when the valve needs to be installed between two pipe flanges. They feature a disc that rotates within the valve body between two flanges.
Large size double flange butterfly valves are required for higher flow rates and larger pipe diameters. They are often made with cast iron, ductile iron or steel valve bodies for strength and durability. The disc is made of stainless steel, alloy steel or other corrosion resistant material.
These valves are used in water and wastewater treatment plants, power plants, petrochemical facilities, and other industrial applications requiring high flow rates through large pipes.
Double offset butterfly valves feature a disc that is offset from the axis of the valve shaft by two distances. This offset design provides benefits like:
• Lower operating torque – even for large size valves
• Smoother operation
• Less wear and longer life
High performance double offset butterfly valves are specified for applications needing reliable shut-off performance even with viscous, abrasive or dense fluids flowing at high rates. Large size double offset butterfly valves are often used in the oil and gas, mining and chemical industries.
High Performance Eccentric Butterfly Valve
Eccentric butterfly valves with a performance-enhancing design are specified for demanding applications. Large size high performance eccentric valves feature:
• Multi-eccentric designs (triple, quadruple eccentric) for ultra-low torque
• Stainless steel or alloy steel discs and shafts for corrosion resistance
• Body materials like ductile or stainless steel for strength and durability
Large high performance eccentric butterfly valves handle extreme conditions like high fluid velocities, heavy particle loads, and wide temperature variations. They are used in critical service applications in industries like power generation, desalination, and chemical processing.