| 零件名称pafrts name | 零件材料 |
| 阀体body | 灰铸铁、球墨铸铁、铸钢、衬各种橡胶、聚四乙烯等gray iron,modular cast iron,cast steel,lining each kind of rubber,teflon&so on |
| 蝶板disc | 灰铸铁、球墨铸铁、铸钢、不锈钢、及特殊材料gray iron,modular cast iron,stainless steel&spe---l material |
| 密封圈seal ring | 球墨铸铁、铸钢、合金钢、不锈钢modular cast iron,cast steel,alloy steel,stainless steel |
| 阀杆stem | 45#、2gr13、不锈钢stainless steel |
| 填料packing | o型圈、柔性石墨o circke,flexible graphite |
主要技术参数main technical parameter