Double Eccentric Design Offset Disc Butterfly Valve | FlowBiz Exports Pvt Ltd
FlowBiz Exports Pvt Ltd is a premier manufacturer and global supplier of high-performance Double Eccentric (Double Offset) Butterfly Valves. Engineered for high-pressure and high-temperature applications, our double offset design offers superior sealing integrity and longevity compared to standard concentric valves.
By significantly reducing friction between the disc and the seat, FlowBiz ensures a lower operational torque and a bubble-tight shut-off for critical industrial pipelines.
The Engineering Excellence of Double Eccentric Design
The FlowBiz Double Offset Butterfly Valve features two distinct offsets that provide a "camming" action during operation:
- First Offset: The shaft is located behind the centerline of the sealing surface, allowing for a continuous 360° sealing path.
- Second Offset: The shaft is located to one side of the vertical centerline of the valve, which allows the disc to "cam" off the seat immediately upon opening.
The Result: The disc lifts off the seat almost instantly, eliminating seat wear and friction. This creative innovation ensures a maintenance-free lifecycle even in high-cycle industrial applications.
Technical Specifications & Standards
Feature | Technical Specification |
Design Standard | API 609 / ASME B16.34 / EN 593 / ISO 10631 |
Pressure Rating | Class 150, Class 300, PN10, PN16, PN25, PN40 |
Size Range | 2" (50mm) up to 48" (1200mm) |
Body Materials | ASTM A216 WCB, CF8, CF8M, Duplex Steel, Cast Iron |
Seating Options | PTFE, RPTFE, Metal-to-Metal (Stellite), Fire-Safe Design |
End Connections | Wafer Type, Lug Type, and Flanged Ends |
Operation | Manual Lever, Worm Gear, Pneumatic Actuator, Electric Actuator |
Key Advantages of FlowBiz Double Offset Valves
1. Reduced Seat Wear & Lower Operational Torque
Because the disc only contacts the seat during the final few degrees of closure, friction is virtually eliminated. This results in an extended seat life and allows the use of smaller, more cost-effective actuators.
2. Bi-Directional Sealing Integrity
Our precision-engineered offset disc provides excellent sealing performance in both flow directions. This makes it the ideal choice for isolation and flow control in complex piping networks and reverse-flow scenarios.
3. Extreme Temperature & Pressure Versatility
Unlike standard resilient-seated valves, our double eccentric design can be fitted with metal seats to handle aggressive media, high-pressure steam, and volatile gases that would typically degrade rubber liners.
4. Fire-Safe and Zero-Leakage Performance
FlowBiz offers fire-safe tested designs (API 607) that maintain sealing integrity during emergency outages, ensuring maximum safety in Oil and Gas refineries and petrochemical plants.
India’s Leading Manufacturer: Presence Across Industrial Hubs
FlowBiz is the trusted Double Eccentric Butterfly Valve manufacturer, serving major industrial zones with rapid delivery and on-site technical support.
- Gujarat: Ahmedabad (Vatva, Odhav, Sanand, Rakhial, Kathwada), Vapi, Valsad, Bharuch, Ankleshwar, Gandhidham, Kutch, Mundra, Dahej, Hazira, Navsari.
- Maharashtra: Mumbai, Pune, Nashik, Aurangabad, Nagpur, Satara, Ambernath, Talegaon, Pimpri-Chinchwad, Ahmed Nagar.
- Pan-India & Global: Serving Indore, Bhopal, Chennai, Coimbatore, and exporting to Dubai, Turkey, Africa (Nigeria, South Africa, Kenya), Thailand, and Vietnam.
The FlowBiz One-Stop Valve Ecosystem
Beyond butterfly valves, we are your holistic partner for flow control and engineering accessories:
- Industrial Valves: Gate, Globe, Ball, and Plug Valves.
- Check Valves: Swing, Lift, Piston, and Universal Design NRVs.
- Specialty Valves: Knife Edge Gate, PFA/FEP Lined, and Diaphragm Valves.
- Instrumentation: Needle Valves, Sight Glass, and IBR-Certified solutions.
- Filtration: Y-Type, Basket, and Conical Strainers.