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适用标准
钢制蝶阀，API 609，MSS SP-67
温度和压力，ASME B16.34
结构长度，API 609
端法兰， ASME B 16.5
试验标准，API 598
耐火标准，API-607
设计说明
密封结构：软密封，多层次硬密封，弹性硬密封，防火软密封
制动器操作
ISO 5211 衬垫
连接：法兰，对焊，对夹，凸耳对夹
操作方式：手动，涡轮，电动，气动，液动
偏心结构，中线结构，单偏心，双偏心，三偏心结构
标准材料规范
| NO. |
Part Name |
ASTM Material |
| Carbon steel |
304 Type |
316Type |
304LType |
316LType |
Alloy 20 |
| 1 |
Body |
A216-WCB |
A315-CF8 |
A315-CF8M |
A315-CF3 |
A315-CF3M |
A315-CN7M |
| 2 |
Stem |
A182 F6a |
A182 F304 |
A182 F316 |
A182 F304L |
A182 F316L |
Alloy 20 |
| 3 |
Disc |
A216-WCB |
A315-CF8 |
A315-CF8M |
A315-CF3 |
A315-CF3M |
A315-CN7M |
| 4 |
Hinge pin |
A276-410 |
A276-304 |
A276-316 |
A276-304L |
A276-316 |
Alloy 20 |
| 5 |
Bolt |
A193-B7 |
A193-B8 |
A193-B8M |
A193-B8 |
A193-B8M |
Alloy 20 |
| 6 |
Retaining ring |
A105 |
A182-F304 |
A182-F316 |
A182-F304L |
A182-F316 |
Alloy 20 |
| 7 |
Seat ring |
Graphite+
304 |
Graphite+
304 |
Graphite+
316 |
Graphite+
304L |
Graphite+
316L |
Graphite+
Alloy 20 |
| 8 |
Bushing |
Bronze |
304+PTFE |
316+PTFE |
304L+PTFE |
316L+PTFE |
Alloy 20+PTFE |
| 9 |
Packing |
Graphite |
PTFE |
PTFE |
PTFE |
PTFE |
PTFE |
| 10 |
Yoke |
A216-WCB |
A216-WCB |
A216-WCB |
A216-WCB |
A216-WCB |
A216-WCB |
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