| nominal diameter | dn80~1200 |
| nominal pressure | pn0.6~10.0mpa ansi 150~600lb |
| medium temperature | -60~450℃ |
| connection type | wafer type |
| valve bonnet type | standard type |
| body material | wcb、cf8、cf8m、cf3m |
| disc material | cf8、cf8m、cf3m、cf8 stellite、cf3m stellite |
| seal material | ptfe、c-ptfe、304、316、316l |
| flow characteristics | approximate equal percentage |
| leakage – hard seal | ansi class iv |
| leakage – soft seal | ansi class vi |
zshwb series double eccentric butterfly valve (referred to as high performance butterfly valve) valve plate and seal ring adopt unique eccentric structure, with features of compact structure, small volume, light weight, good cutting performance, long service life, easy maintenance and repair. widely used in chemical, electricity, textile, food, medicine and other industrial sectors and municipal engineering, water plants and other pipelines to cut water or sewage or air, gas, natural gas medium cut-off or adjust the flow control.