Rubber-Lined
Soft Seal
Butterfly Valve

This Rubber-lined Butterfly Valve is engineered to deliver outstanding performance, exceptional durability, and reliable sealing across a wide range of industrial applications. Its versatility, combined with innovative features, ensures optimal functionality for various media and conditions.

Widely used in industries such as mining and mineral processing, chemical manufacturing, water and wastewater treatment, fertilizer production, and pulp & paper, this valve handles corrosive, abrasive, and slurry media with ease—making it a trusted solution in demanding environments.

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Features & Benefits

Double-Eccentric Seat Design: This configuration features an offset disc and stem, reducing seat wear and enhancing sealing performance.

Superior Sealing Performance: Bidirectional sealing ensures zero leakage during testing.

Low Flow Resistance: Minimal medium retention and smooth flow make it ideal for handling powders, pastes, and other viscous materials.

Compact and Lightweight Design: Simple structure with small dimensions, light weight, and low torque enables flexible and easy operation.

Quick and Efficient Actuation: Engineered for rapid opening and closing, offering flexible operation with minimal effort.

Versatile Application: Compatible with various working conditions and media thanks to a wide range of sealing material options.

Ease of Maintenance: Easy to disassemble and repair, with the flexibility to install in any position.

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Performance Parameters

Design Standards: GB, API, ASME, EN, DIN, ISO, JIS, AWWA

Nominal Diameter: DN50–DN4000 (2"–160")

Nominal Pressure: PN2.5–PN50 (86LB–300LB)

Connecting Flanges: GB/T9113, ASME B16.5, ASME B16.47, AWWA C207, EN 1092 Series, ISO 7005 Series, JIS B2220, JIS B2212, GOST 33259

Material Options: Cast iron, ductile iron, nickel-chromium alloy cast iron, carbon steel, stainless steel, alloy steel, copper alloy

Sealing Materials: NBR, EPDM, VITON, silicone rubber, etc.

Rubber Lining Materials: CR (chloroprene rubber), NR (natural rubber), and others

Operation Methods: Handle, worm gear, electric, pneumatic, hydraulic, electric hydraulic

Temperature Range: -29°C to +200°C

Applicable Media: Water, seawater, oil, gas, and corrosive substances

 

Seal Structure Options

Whole Embedded Body Seat

• Offers a fully integrated sealing solution for reliable and durable performance.

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Integrated or Welded Body Seat

• Welded with corrosion-resistant materials for extended service life in challenging environments.

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