Marine Equipment
API Wafer Dual Plate Check Valve
Wafer Dual Plate Check Valve is also called as Wafer Dual Disc Check Valve, Wafer Butterfly Check Valve. Standard: Design Standard: API 594/API 6D，ISO 14313 Temperature & Pr...
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API Wafer Dual Plate Check Valve
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China API Wafer Dual Plate Check Valve:
Wafer Dual Plate Check Valve is also called as Wafer Dual Disc Check Valve, Wafer Butterfly Check Valve.
Standard:
Design Standard: API 594/API 6D，ISO 14313
Temperature & Pressure: ASME B16.34
Face to Face: ASME B 16.10
Flange Standard: ASME B 16.5
Test Standard: API 598
Test Pressure:
| Nominal Pressure (Lb) | Shell Strength Test | Water Seal Test | Air Seal Test | |||
| MPa | Lbf/in2 | MPa | Lbf/in2 | MPa | Lbf/in2 | |
| 150 | 3 | 430 | 2.2 | 315 | 0.4-0.7 | 60-100 |
| 300 | 7.7 | 1110 | 5.7 | 815 | ||
| 600 | 15.3 | 2220 | 11.3 | 630 | ||
| 900 | 23 | 3330 | 17 | 2445 | ||
Material:
| 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 | ||||||||
