Product Introduction
The triple-eccentric multi-layer metal-seal flange butterfly valve is an industrial valve designed using the three-dimensional core principle. It is a long-life, energy-saving pipeline control device and is mainly used in pipeline systems in the fields of metallurgy, electricity, petroleum, and chemical industry. It is suitable for the cutoff and regulation of air, gas, combustible gas, and corrosive media. The valve consists of a valve body, valve disc, a multi-layer valve seat, a valve stem, and a actuator. The valve seat adopts a multi-layer structure design that is compatible with hard and soft seals. It has corrosion resistance and complies with national standards. It supports worm gear, pneumatic or electric drive, and is suitable for bidirectional sealing requirements in corrosive media environments.

Specifications
| DN | DN50-DN2000 |
| Temperature range | -20℃-425℃ |
| Installation direction | Unidirectional |
| Face to face | API609, GB/T12221, JIS B2002 |
| Top connection | ISO5211 |
| Body material | Carbon steel, Stainless steel |
| Stem material | SS420, SS304, SS316, K500 |
| PN | PN10, PN16,10K,150LB,300LB,600LB |
| Connection | Wafer |
| Design | API609, JB/T8527 |
| Flange drilling | ASME B16.5, GB/T1913, JIS B2220 |
| Inspection | API598, GB/T19327, JIS B2003 |
| Disc material | Carbon steel, Stainless steel |
| Sealing material | SS304, SS316, Stellite |

