Double eccentric structure: Reduces wear on the sealing surface, making opening and closing easier.
Worm gear drive: High torque, self-locking, and stable operation.
Flange Butterfly Valve
| Size | DN40-DN2000 |
| Face to Face | API609, BS5155, DIN3202, ISO5752 |
| Connection Flange | PN6/PN10/PN16/PN25/JIS5K/10K/16K/150LB/AS2129 Table D/E |
| Mounting Flange | ISO5211 |
| Working Pressure | PN10/PN16/PN25 |
| Application | Fresh Water, Sea Water, Oil, Gas, Acid, Food, Steam |
| Application Temperature | -210~250 ºC |
| Shaft Disc Connection Type | Pin/Pinless/Double Half Shafts |
| Seat Type | Soft Back/Hard Back/Vulcanized |
| No. | Parts | Materials |
| 1 | Body | Ductile Iron, Carbon Steel, Stainless Steel, Bronze. |
| 2 | Seat | NBR, EPDM, PTFE, Viton, Neoprene, Hypalon, Silicon, PFA. |
| 3 | Shaft | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| 4 | Disc | DI+Ni, Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, (DI/WCB/SS) coated (Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA) |
| 5 | Operation | Hand Lever, Gear Box, Electric/Pneumatic/Hydraulic Actuator |
| 6 | Bushing | PTFE, Bronze |
| 7 | O Ring | NBR, EPDM, VITON |
Equipped with world-class manufacturing technology—including large blast furnaces, modern converters, efficient continuous casting machines, and precision rolling lines—our steel plant delivers exceptionally stable and high-quality products.
We are Xin Ya Heng International Company, a manufacturing and trading company from China with 16 years of experience, and a leading steel producer/exporter. Our customers are from Africa, the Americas, Europe, and other regions.
1. The valve seat is vulcanized with the valve body as a whole, with good integration and easy on-site maintenance.
2. Simple structure and quick opening. The butterfly disc material adopts streamlined design, which can be used in both directions, with small flow resistance and excellent flow characteristics.
3. Long service life and many times of opening and closing.
4. Two way sealing, zero leakage in the test.
5. The flow characteristics tend to be linear and the regulation performance is good.
Jasmine chan
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