High-Pressure Butterfly Valves: Introduction, Technical Parameters & Product Features

High-Pressure Butterfly Valves are a type of hard-seal butterfly valves, adopting an eccentric metal sealing structure with a metal-to-metal sealing form. They can be replaced with metal sealing rings for metal-to-metal sealing as needed, or use stainless steel plate and graphite composite plate sealing rings for metal-to-metal sealing. Their butterfly discs are installed in the diameter direction of the pipeline. In the cylindrical channel of the valve body, the disc-shaped butterfly disc rotates around the axis, with a rotation angle between 0° and 90°. When rotated to 90°, the valve is fully open, thereby realizing the opening or closing of the pipeline. They are mainly used as shut-off valves and can also be designed to have the functions of cutting off and throttling regulation.

Technical Parameters

• Name: High-Pressure Metal Seal Butterfly Valve

• Nominal Diameter: 8〞～48〞; DN200～1200

• Pressure Range: 300Lb～1500Lb; 2MPa～25MPa

• Temperature Range: -196～650℃

• Applicable Medium: Air, flue gas, gasifier syngas, LNG natural gas, etc.

• Material: Carbon steel, austenitic stainless steel, duplex steel, etc.

Product Features

• The latest computer technologies (CAE, CFD) are applied to the entire series of products;

• All products are processed by CNC machine tools or machining centers, with high precision of the sealing surface;

• Adopt tri-eccentric structure and conical surface sealing, which becomes tighter as it closes, with self-compensation function;

• The sealing surface is processed by five-axis machining centers with McGraw grinding process, ensuring high sealing precision;

• The butterfly disc adopts a turtle-back design, featuring high strength and low flow resistance.