蝶阀
蝶形双瓣铸钢止回阀
适用标准 设计说明 标准材料规范
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
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
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