Double Eccentric Worm Gear Butterfly Valve | High Performance Control
A heavy duty valve featuring a unique dual offset design radially and axially. Opening resistance stays incredibly low, maximizing seal lifespan. Handles intense working pressures up to 5.0MPa easily.
Accreditation and Certificates:
Brutal marine conditions test the endurance limits of piping networks daily. Double eccentric butterfly valves supply the perfect answer for high pressure and high temperature environments. The stem axis contains two distinct offsets. It shifts away from both the disc center and the main body centerline. The disc breaks away from the seat instantly upon opening. This clever geometry cuts down unnecessary squeezing and scraping heavily. A worm gear mechanism makes turning large diameter, high pressure valves effortless for the crew.
Technical Specifications：
| Parameter | Specification |
| Nominal Diameter | DN50 to DN700 |
| Working Pressure | 0.1MPa to 5.0MPa |
| Temperature Limit | Generally ≤200°C |
| Material | Cast steel, Bronze, Stainless steel |
| Connection Type | Wafer, Flange types |
Key Features：
- Dual Offset: Forms a “double eccentric”structure with unique geometry.
- Longer Life: Massive reduction in scraping results directly in extended seat lifespan.
- Easy Turning: Under identical conditions, opening resistance torque sits much lower than concentric models.
- High Tolerance: Resists pressure and temperature spikes far better than standard valves.
Applications：
- Fuel Transfer Systems: Manages marine fuel routing safely under elevated pressures.
- Hot Pipelines: Controls thermal fluid networks approaching or exceeding 200°C reliably.
- Heavy Industry: Meets strict control demands across petroleum and chemical sectors.
Installation & Maintenance：
Operators need to keep the worm gear drive box well lubricated with grease. The dual offset structure detaches from the seat quickly, generating very little mechanical wear. Maintenance teams replace seals far less often than they would with conventional butterfly valves.
Custom Options Available：
Clients can request metal sealing components to achieve higher temperature limits for extreme heat environments. The factory provides custom scaling services to build massive sizes up to DN1000.We provide customization services based on international standards such as ANSI, JIS, and DIN, ensuring compatibility with different global market requirements.
FAQ ：
Q: What makes it better than a standard concentric butterfly valve?
A: It turns with much lower opening resistance torque and suffers far less wear. The unique structure directly creates a longer seat lifespan and superior pressure and temperature tolerance.
Contact Us Now
If you would like to have a question then get in touch today, we are ready to assist 24/7.
We welcome your cooperation and we will develop with you.
- Factory-direct Connectivity Solutions.
- High quality, Competitive Price.
- Custom-tailored solutions.
- Problem-solving approach.