Applicable Standards
Standard Material Specifiactions
Steel Check Valves, API 594/API 6D
Steel Check Valves, ISO 14313
Steel Valves, ASME B16.34
Face to Face, ASME B16.10
End Flanges, ASME B16.5
Inspection and Test, API 598/API 6D
Design Description
One Plece Body
Butterfly Swing Type
Dual-plate Disc, Long-pattern
Renewable Split Disc
Horizontal or Vertical Service
Wafer Ends
Available With Flanged Ends
Butterfly Swing Type
Dual-plate Disc, Long-pattern
Renewable Split Disc
Horizontal or Vertical Service
Wafer Ends
Available With Flanged Ends
Standard Material Specifiactions
| 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 | ||||||||