Double Offset Butterfly Valve
Product Range
Double Offset Butterfly Valve
Flow-Tek Butterfly Valves deliver the perfect mix of cost-effective design and reliable performance, making them an ideal solution for commercial, HVAC, and industrial applications.
The wafer-style body features a universal design that fits between most common pipe flanges, and is also available with flanged end connections for added flexibility.
Operation Options
Lever / Gear / Pneumatic Actuator / Pneumatic Cylinder / Electrical (Motorized) Actuator / Manual Override Arrangement with Pneumatic & Electrical Actuator.
Applicable Standard
| Design Standard : | BS 5155 / API 609 / IS 13095 |
| Face to Face : | BS 5155 / API 609 / IS 13095 (Wafer Short) |
| End Connection : | Wafer Type / Lug Type / Flanged End to suit ANSI / DIN / BS / JIS / IS etc. |
| Testing Standard : | BS 5155 / BS 6755 (Part I) / API 598 / IS 13095 |
Seat Temperature Ratings: (For Resilient Seated Butterfly Valves)
| MATERIAL | TEMPERATURE RATINGS OC (OF) |
| EPDM (2" - 16") | -34 To 107 (-30 to 225) |
| EPDM (18" & Larger) | -34 To 107 (-30 to 225) |
| PTFE | 4 To 121 (40 to 250) |
| BUNA - N | -12 to 82 (10 to 180) |
| NEOPRENE | -6 to 93 (20 to 200) |
| HYPALON | -17 to 135 (0 to 275) |
| VITON | -12 to 135 (10 to 275) |
| HIGH TEMPERATURE (VITON) | -12 to 204 (10 to 400) |
Features
- Advanced Double Eccentric Design for low-torque, smooth operation
- Durable Encapsulated Seal—adjustable and easy to replace for hassle-free maintenance
- One-Piece Seal Retainer ensures long-term reliability
- Optional Metal-to-Metal Seating for demanding applications
- Flexible Shaft Orientation: Horizontal standard, vertical optional
- Material Options: Standard SS 304 for body seat and seal retainer, with other materials available on request
- Throttling Friendly for precise flow control
- Efficient Flow Design with minimal head loss
- Face-to-Face Dimensions tailored to multiple international standards
- Flanges compliant with international specifications
- Size Range: 50 NB to 1200 NB (larger sizes on request)
- Operation Options: Comes standard with worm gear operator; other actuation methods available
Applications
- Water Supply & Distribution
- Power Generation Facilities
- Wastewater & Sewage Plants
- Industrial Process Plants
- Chemical & Petrochemical Industries