Pressure Sealed Bonnet Check Valve
Product Range
Sizes: NPS 2 to NPS24 (DN50 to DN600)
Pressure Range: Class 900 to Class 2500
End connection: RF, RTJ, BW
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, BS 1868 |
| Face-to-face | ASME B16.10, API 6D, DIN 3202 |
| 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 flow resistance for fluid；
2.Rapid opening and closing, sensitive action
3.With small close impact, not easy to product water hammer .
4.Equipped with counterweight, damper or gearbox is available as per customer request;
5.Soft sealing design can be chosen;
6.Can choose to lock the valve position in the fully open position
7.Jacketed design can be chosen.
8.Full or Reduced Bore
9.Bolted Cover or Pressure Seal Cover
10.Smooth fluid passageway and small fluid resistance;
11.Swing type disc.
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