ASTM A351 CF8 Butterfly Valve, EN 593, API 609, DN300, PN10

Apr 25, 2025

Product Name: ASTM A351 CF8 Butterfly Valve
Type: Triple Eccentric Butterfly Valve
Design Standard: EN 593, API 609, BS 5155
Body Material: ASTM A351 CF8
Size: DN300, 12 Inch
Pressure Rating: PN10, Class 150 LB
Test & Inspection Standard: API 598, EN 12266
Face to Face Standard: DIN 3202, EN 558
Mounting Flange Standard: ISO 5211
End Connection: Flanged
Operation: Gear Operator
Working Temperature: -40°C to 120°C
Media: Water, Oil and Gas

Key Features of Triple Offset Butterfly Valves

Reliable Bubble-Tight Shutoff: Specifically designed for critical applications where absolute zero leakage is essential. Triple offset design ensures a reliable, repeatable, and bubble-tight seal—something that standard or even double-offset butterfly valves may not achieve.
Ideal for Harsh Media: Suitable for demanding applications involving aggressive chemicals, slurries, or media with fine particles. The design helps prevent clogging, erosion, and seat damage often seen in conventional butterfly valves.
Advanced Triple Offset Design: Unlike concentric or double-offset valves, the triple offset butterfly valve introduces a third offset—a conical seat geometry. This tapered seat matches precisely with the disc geometry, ensuring friction-free, metal-to-metal sealing and extended service life.
Low Torque, High Performance: The geometry of the triple offset allows for low operating torque while maintaining excellent sealing capabilities, reducing actuator size and energy requirements.
Long-Lasting Metal Seat: The metal-to-metal sealing surfaces reduce wear and provide superior resistance to high temperatures, pressure, and corrosive environments.
Versatile Applications: Widely used in oil and gas, chemical processing, power generation, and other industries requiring high-performance isolation and control under tough conditions.

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