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    | 
 部件 PART  | 
 规格说明 SPECIFICATION  |  
| 
 *1.  | 
 阀体 Valve Body  | 
 灰铁,ASTM A 48,30A级 Gray Iron, ASTM A 48 Class 30A  |  
| 
 2.  | 
 阀座 Seat  | 
 青铜C83600或C93200, ASTM B 505 Bronze C83600 or C93200, ASTM B 505  |  
| 
 3.  | 
 单向阀瓣 Clapper  | 
 不锈钢304, ASTM A 240 Stainless Steel 304, ASTM A 240  |  
| 
 **4.  | 
 端面密封 Facing Seal  | 
 三元乙丙橡胶 EPDM Rubber  |  
| 
 5.  | 
 压环 Clamping Ring  | 
 不锈钢304, ASTM A 240 Stainless Steel 304, ASTM A 240  |  
| 
 **6.  | 
 垫圈 Gasket  | 
 三元乙丙橡胶 EPDM Rubber  |  
| 
 7.  | 
 弹簧 Spring  | 
 不锈钢302, ASTM A 313 Stainless Steel 302, ASTM A 313  |  
| 
 8.  | 
 铰销 Hinge Pin  | 
 不锈钢303, ASTM A 582 Stainless Steel 303, ASTM A 582  |  
| 
 9.  | 
 螺栓 Bolt  | 
 不锈钢304, ASTM F 593 Stainless Steel 304, ASTM F 593  |  
| 
 **10.  | 
 防松螺母 Locknut  | 
 不锈钢303, ASTM F 594 Stainless Steel 303, ASTM F 594  |  
| 
 11.  | 
 插塞DN8 NPT Plug 1/8" NPT  | 
 钢 Steel  |  
| 
 12.  | 
 插塞DN15 NPT Plug 1/2" NPT  | 
 钢 Steel  |   
  |