Product Introduction
The Flanged Type Double Eccentric Soft Seated Butterfly Valve is a high-performance valve designed for water supply, municipal, HVAC, and general industrial applications.
It adopts a double eccentric design, where the shaft is offset from both the center of the valve and the pipe, effectively reducing friction between the disc and the seat during operation.
This structure allows the valve to achieve tight sealing, long service life, and easy operation, making it ideal for large-diameter and medium-pressure systems.
With its flanged-end connection, the valve offers higher installation strength and better alignment accuracy compared with wafer types.
The soft-seated sealing structure provides excellent bi-directional sealing performance, ensuring zero leakage under PN10 or PN16 pressure conditions.
Product Features and Advantages
Double Eccentric Design: Reduces seat friction and wear, ensuring smooth operation and longer life.
Soft Seal Structure: Rubber seat provides excellent tightness for both flow directions.
Reliable Sealing Performance: Zero leakage under rated pressure, suitable for water, air, and other neutral media.
Strong Body Design: Flanged ductile iron body ensures stable operation even under vibration.
Corrosion Protection: Body and disc coated with epoxy or nylon coating for extended durability.
Easy Maintenance: Seat ring can be replaced without removing the valve from the line.
Flexible Operation: Available with manual, gear, pneumatic, or electric actuation.
Technical Parameters
| Parameter | Specification |
| Size Range | NPS 4″ – 80″ / DN100 – DN2000 |
| Pressure Rating | PN10 / PN16 |
| Temperature Range | -10°C – +120°C / +14°F – +248°F |
| Body Material | Ductile Iron (EN-GJS-400-15 / ASTM A536 65-45-12) |
| Disc Material | Ductile Iron (Epoxy or Nylon Coated) |
| Seat Material | EPDM, NBR |
| Stem Material | Stainless Steel (AISI 410 / 420 / 431) |
| Connection Type | Flanged type, compliant with EN 1092-2, ASME B16.5 |
| Sealing Type | Soft seal, bi-directional sealing |
| Operation | Lever, Gearbox, Pneumatic actuator, Electric actuator |
Industry Applications
● Water supply and drainage systems
● Municipal and HVAC engineering
● Industrial fluid pipelines
● Irrigation and general utility systems
● Cooling water and environmental protection projects
Tianjin Dingliu valve Industry Co., Ltd. is a high-tech enterprise specializing in the valve and automation industry.
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