WCB Triple Eccentric Flange Butterfly Valve – Designed for Demanding Industrial Applications

In the harshest environments where temperature, pressure, and reliability are critical, conventional valve solutions often fall short. That’s where the WCB Triple Eccentric Flange Butterfly Valve stands out as a high-performance, cost-effective solution for industrial fluid control.

Engineered for Extreme Conditions

The WCB triple eccentric butterfly valve is specifically designed to meet the high demands of industries such as oil refining, petrochemicals, and power generation. Unlike soft seal butterfly valves, which have limitations in extreme environments, this metal-seated valve can operate reliably under temperatures ranging from -29°C to 425°C, withstanding instantaneous peaks up to 550°C. For example, in catalytic cracking units in refineries (DN600, PN40, 400°C), this valve delivers consistent performance.

Triple Eccentric Design: Efficiency Meets Durability

What sets this valve apart is its triple eccentric construction, which minimizes friction during opening and closing, ensuring tight sealing with significantly lower operating torque—35% less compared to double eccentric designs. This means reduced actuator size, longer service life, and smoother operation.

Robust WCB Cast Steel Body (ASTM A216)

Made from WCB (Wrought Carbon Body) cast steel with a tensile strength ≥485MPa and carbon content ≤0.25%, the valve body offers:

· High resistance to thermal stress up to 425°C

· Greater mechanical strength

· 50% longer service life compared to conventional carbon steel bodies

This durability makes it a preferred choice in critical applications where longevity and mechanical reliability are non-negotiable.

Zero Leakage, Minimal Maintenance

With a metal-to-metal hard seal structure, the valve provides zero leakage performance without the need for soft sealing compensation. Its robust design enables extended maintenance intervals of up to 8–10 years, reducing downtime and total cost of ownership.

Cost-Effective Alternative to Stainless Steel

The WCB Triple Eccentric Flange Butterfly Valve is also economically advantageous. With WCB material costing approximately 40% less than stainless steel alternatives like CF8M, it delivers high performance without inflating project budgets.