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Double Eccentric Butterfly Valve
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Double Eccentric Butterfly Valve
| Name | Double Eccentric Butterfly Valve |
| Size | DN150-DN2000 |
| Pressure | PN10-PN40 |
| Applicable standards | |
| Design standard | EN593 |
| Face to face | EN558 series 13-14 |
| Body | Ductile iron |
| Disc | Ductile iron/SS304/SS316 |
| Stem | SS420;SS304;SS316 |
| Body seat | SS304;SS316 |
| Disc sealing | EPDM |
| Coating | FBE ablve 250um |
The Double Eccentric Butterfly Valve is an advanced flow control solution engineered for superior performance and longevity in demanding applications. Its design incorporates two distinct offsets: the first offset positions the stem axis behind the disc seat plane, and the second offset places it slightly off the disc centerline. This double eccentricity is a fundamental feature that ensures the disc completely disengages from the seat seal during the initial 10 degrees of opening, virtually eliminating wear and friction. This mechanical action guarantees a tight, bubble-seal shut-off when closed and minimizes operating torque, enhancing the valve's operational efficiency and service life.
Constructed with robust materials like a stainless steel stem and a resilient seated design, the Double Eccentric Butterfly Valve exhibits exceptional corrosion resistance and durability. It is ideally suited for a wide spectrum of services, including water supply, wastewater treatment, HVAC systems, marine applications, and various industrial processes involving oils, gases, and mild chemicals. The reliable sealing performance and low-maintenance requirements of the Double Eccentric Butterfly Valve make it an indispensable component for critical isolation and regulation duties in pipelines.
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