Description
Offset Disc Butterfly Valve Flange End - High-Pressure & Rigid Pipeline Flow Control
FlowBiz Exports is a leading manufacturer and exporter of heavy-duty Offset Disc Butterfly Valves with Flange End connections (available in Double Offset and Triple Offset configurations). Engineered with eccentric shaft positioning and robust double-flanged bodies, these high-performance valves provide rigid piping support, frictionless seal operation, zero-leakage isolation, and long service life in high-pressure industrial fluid systems.
Key Features & Operational Superiority
- Rigid Double Flanged Body: Integrates seamlessly between pipeline flanges, ensuring maximum mechanical stability, stress resistance, and dead-end service safety.
- Eccentric Offset Disc Geometry: Camming action lifts the disc seal off the seat upon rotation, eliminating seat friction, reducing wear, and lowering operating torque.
- Bubble-Tight Bi-Directional Sealing: Provides zero-leakage seal performance under severe differential pressures and fluctuating thermal cycles.
- Fire-Safe Design: Optional metal-to-metal seating ensures full structural and sealing integrity during emergency high-temperature exposure.
Technical Specifications & Material Grades
Parameter | Specification Details |
Size Range | DN50 to DN1800 (2” to 72”) |
Pressure Rating | Class 150, Class 300, Class 600 / PN10 to PN100 |
Temperature Range | -50°C to +500°C (Cryogenic & High-Temperature options) |
Body Materials | Cast Steel (A216 WCB / LCC), Stainless Steel (CF8, CF8M, CF3M), Duplex & Super Duplex Steel |
Disc Materials | SS316 / SS316L, Duplex Stainless Steel, Monel, Inconel |
Seat / Seal Options | Fire-Safe PTFE / RTFE, Metal-to-Metal (Stellite 6 Hardfaced Body Seat), Inconel Laminate |
End Connections | Flanged to ASME B16.5, ASME B16.47, EN 1092-1 |
International Standards & Quality Inspection
All FlowBiz offset disc flanged butterfly valves are designed and manufactured following API 609 (Category B), ASME B16.34, ISO 5752, and BS EN 593 guidelines. Every valve undergoes 100% hydrostatic shell testing, high-pressure pneumatic seat testing, and fire-safe testing according to API 598 and API 607 standards prior to export.
Industrial Applications
Our flanged offset disc butterfly valves are extensively deployed across heavy process sectors, including:
- Oil & Gas Processing & Hydrocarbon Pipelines
- Power Generation & High-Pressure Steam Piping
- Chemical & Petrochemical Refining Facilities
- Water Treatment, Desalination & Transmission Lines
- Offshore Platforms, FPSOs & Marine Pipelines
Why Choose FlowBiz Exports?
At FlowBiz Exports, over three decades of manufacturing mastery back every industrial valve we produce. We combine state-of-the-art infrastructure, certified testing procedures (Hydrostatic, Radiography, PMI), and rigorous quality control to deliver long-lasting performance. With global export compliance, custom engineering solutions, direct factory pricing, and committed technical support, FlowBiz is the trusted partner of choice for leading engineering contractors and industrial buyers worldwide.