API 6D, API 594 Flange Wafer Check Valve
Product Range
Sizes: NPS 1/2 to NPS 24 (DN15 to DN600)
Pressure Range: Class150 to Class 2500
End connection: RF, RTJ
Materials
Casting (A216 WCB, WC6, WC9, A350 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A, A995 5A, A995 6A), Alloy 20, Monel, Inconel, Hastelloy
Standard
| Design & manufacture | API 6D, API 594 |
| Face-to-face | API 594, ASME B16.10 |
| End Connection | Flange Ends to ASME B16.5, ASME B16.47, MSS SP-44 (NPS 22 Only) |
| - Socket Weld Ends to ASME B16.11 | |
| - Butt Weld Ends to ASME B16.25 | |
| - Screwed Ends to ANSI/ASME B1.20.1 | |
| Test & inspection | API 598 |
| Also available per | NACE MR-0175, NACE MR-0103, ISO 15848 |
| Other | PMI, UT, RT, PT, MT |
Design Features
1.Small size ,low installation space requirements
2.Rapid opening and closing, sensitive action
3.Spring loaded disc design, closure is guaranteed
4.Soft sealing design can be chosen
5.The pin built-in structure, no leakage
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