- Butterfly Valve (Concentric/Eccentric)
Falcon Flow Control Concentric and Eccentric Butterfly Valves
High-performance concentric and eccentric butterfly valves designed for versatile flow control and isolation in industrial piping systems.
Full Description
The Falcon Flow Control Concentric and Eccentric Butterfly Valves provide reliable, efficient control of fluid flow in various industrial applications. These valves feature a compact design with quick operation and low-pressure drop, making them ideal for large pipe diameters and applications requiring rapid shut-off.
- Concentric Butterfly Valve: Features a centrally located disc and stem, with the disc rotating within the pipe bore. This design provides simple, cost-effective flow control with a resilient seat offering tight shut-off.
- Eccentric Butterfly Valve: The disc is offset from the centerline of the valve body and stem, reducing seat wear and improving sealing performance, especially in high-pressure and temperature applications. Variants include single-offset (resilient seat), double-offset (metal seat), and triple-offset designs (metal-to-metal sealing with high cycle life).
These valves are suitable for a wide range of media including water, air, gas, oil, and corrosive fluids. They are commonly used in water treatment plants, HVAC systems, petrochemical, and power generation industries.
Features & Benefits
Concentric and eccentric designs
Flexible options for diverse industrial applications
Compact and lightweight
Easy installation and space-saving
Quick quarter-turn operation
Fast open/close for efficient control
Resilient or metal seat options
Tight sealing performance for various media and conditions
Multiple connection types
Compatibility with different piping standards
Low-pressure drop
Energy-efficient flow control
Application Segments
Water and wastewater treatment
HVAC and building services
Petrochemical and chemical plants
Power generation
Oil and gas pipelines
Product Line
Falcon Control Valve Series
Butterfly Valves (Concentric and Eccentric)
Size Range
NPS (inch)
DN (mm)
2” – 48”
DN 50 – DN 1200
Pressure Class
Standard
Rating
API
Class 150, 300, 600
ISO
PN10, PN16, PN25, PN40
Materials
- Body: Carbon Steel ASTM A216 WCB, Stainless Steel ASTM A351 CF8/CF8M
- Disc: Stainless Steel, Aluminum Bronze, Ductile Iron
- Seat: EPDM, NBR, PTFE (Resilient Seats); Metal Seats for high-temp applications
Standard Connections
- Wafer Type – ASME B16.5
- Lug Type – ASME B16.5
- Double Flanged – ASME B16.5
Design Options
- Wafer, lug, and flanged body types
- Single, double, and triple-offset configurations
- Various seat materials for chemical and temperature resistance
Certifications & Standards
- API 609 – Butterfly Valve Standards
- ISO 5752 – Face-to-Face Dimensions
- API 598 – Testing and inspection
- PED 2014/68/EU compliance