适用标准
钢制止回阀，API 594/API 6D，ISO 14313
温度和压力，ASME B16.34
结构长度，ASME B 16.10
端法兰， ASME B 16.5
试验标准，API 598
设计说明
单片阀体
蝶形双瓣旋启式
对夹或法兰连接
水平或垂直安装
标准材料规范
|
No |
Part Name |
ASTM Material |
|
Carbon Steel |
1.25Cr-0.5Mo |
2.25Cr- 1Mo |
304 Type |
316 Type |
304L Type |
316L Type |
20 Alloy |
|
1 |
Body |
A216WCB |
A217 WC6 |
A217WC9 |
A351CF8 |
A351 CF8M |
A351CF3 |
A351 CF3M |
A351 CN7M |
|
2 |
Plate |
WCB+ 13Cr *1 |
A217 WC6+HF |
A217 WC9+H F |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
A351
CN7M |
|
3 |
Stop Pin |
A276 410 |
A276 410 |
A276 410 |
A276 304 |
A276 316 |
A276 304L |
A276 316L |
20-Alloy |
|
4 |
Back Spring |
Si-Mn steel |
Cr-V Steel |
Cr-V Steel |
A313 304 |
A313 316 |
Inconel 750 |
Inconel 750 |
Incone
1750 |
|
5 |
Hinge Pin |
A276 410 |
A276 410 |
A276 410 |
A276 304 |
A276 316 |
A276 304L |
A276 316L |
20-Alloy |
|
6 |
Eyebolt |
Carbon Steel |
Carbon Steel |
Carbon Steel |
Carbon Steel+Zn |
Carbon Steel+Zn |
Carbon Steel+Zn |
Carbon Steel+Zn |
Carbon Steel+Zn |
| |
Seat Face |
13Cr*1 |
HF |
HF |
NA |
NA |
NA |
NA |
NA |
|
*1 |
PN≥600Class seal face will be HF |
|
Na |
Intergral with vessell |
