■主要零件及材料 Main parts and materials
| 零件名称 Part name | 材料 Material |
| 上下阀体 Upper and lower valve body | 铸铁Cast iron、铸钢Cast steel、不锈钢Stainless steel、衬Lining/F4 、F46 |
| 阀座 Valve sea | F4 /F46 |
| 带杆蝶板 With lever dish plate | 全衬Fulling (WCB包衬)F4/F46、半衬Half lining(不锈钢)/F4、F46 |
| 衬垫 Liner | 硅橡胶 |
| 蜗轮手柄 Worm handle | Qt400-15球墨铸铁、铝合金 |