Hard-seated ASME lug butterfly valve is a valve that connects to two pipe flanges using double-ended bolts, also known as lug-type butterfly valve or single-gripping butterfly valve. Its structural features include lugs around the valve body, designed in a flanged structure with bolt holes, suitable for fire protection piping, drainage, sewage, food, heating, gas, ship, hydroelectric power, energy systems, light industry, and textiles, etc.
Working Principle
The hard-seated ANSI flanged butterfly valve operates with a circular butterfly disc as the shut-off element, opening, closing, and adjusting the fluid passage by turning the valve rod. When the butterfly disc rotates to 90°, the valve is fully open, at which point only the thickness of the butterfly disc presents resistance to the fluid flow, resulting in very low flow resistance.
Structural Features
Threeeccentricstructure: This structure reduces the friction of the sealing ring, extends the service life of the valve, and ensures reliable sealing performance.
High-temperature, wear-resistant, and corrosion-resistant: Suitable for various harsh working conditions, such as high-temperature and high-pressure environments.
Well-designed and compact structure: easy for maintenance and part replacement.
Application Scenarios
Rigid seal ANSI raised butterfly valves are widely used in industrial pipelines for oil, chemical, metallurgy, and power industries, for cutting off or regulating medium flow. They possess strong pressure resistance and are suitable for low, medium, and high-pressure environments.
