Butterfly valve disc material selection
Caustic substance | Material selection | |
Ⅰ | Ⅱ | |
Low pressure steam | WCB | Stainless steel |
Petroleum | Cast Iron | WCB |
Crude petroleum | Cast Iron | Bronze |
Gasoline | WCB | Bronze |
Compressed air | Bronze | Cast Iron |
Coal gas | Cast Iron | Bronze |
Nitric acid | Stainless steel | |
Oil of vitriol | WCB | High silicon cast iron |