As a type of double-eccentric butterfly valve, it minimizes friction between the seat and the disc during operation, thereby significantly reducing seat wear and extending service life.
Features a compact face-to-face dimension designed to save installation space, allowing for mounting between pipe flanges; serves as a lightweight alternative to flanged valves, reducing weight without compromising pressure-bearing capacity.
Enables smooth, direct manual regulation and shut-off control, making it ideal for small- to medium-sized valve applications.
Features a robust and durable design capable of withstanding high differential pressures and demanding industrial process conditions.
Reduces frictional resistance, making manual operation easier and lowering actuator specification requirements for automation upgrades.
Delivers zero-leakage or tight shut-off performance across a wide range of temperatures and pressures.
Suitable for sectors such as water treatment, HVAC systems, chemical processing, power generation, and the oil and gas industry.
| Item | Specification |
|---|---|
| Valve Type | High Performance Butterfly Valve |
| Design | Double Offset |
| Body Type | Wafer |
| Size Range | DN50–DN1200 |
| Pressure Rating | PN10 / PN16 / Class 150 |
| Body Material | Carbon Steel / Stainless Steel |
| Disc Material | CF8M / 2205 |
| Seat Material | PTFE / RPTFE |
| Stem Material | Stainless Steel |
| Operation | Lever / Gearbox / Pneumatic / Electric |
| Media | Water, Air, Gas, etc. |
| Temperature | According to seat material |
| Leakage | Bidirectional Tight Shut-off |
| Flange Standard | EN 1092 / ASME B16.5 / JIS |
| Face-to-Face | EN 558 / API 609 |
Seat selection depends on the operating medium, fluid temperature, pressure rating, and the chemical corrosiveness of the medium:
PTFE vs RPTFE Seat Options
- PTFE provides excellent chemical resistance, low friction and a wide service temperature range, making it suitable for corrosive and general industrial media.
- RPTFE uses reinforcing fillers to improve mechanical strength, dimensional stability and resistance to creep and wear. It is particularly suitable for high-performance butterfly valves operating under higher pressure or repeated cycling conditions.