Nozzle check valves feature a spring-assisted, short-stroke disc action that closes the valve in a fraction of a second. This feature protects pipelines, expensive pumping and related equipment from any high reverse velocities and damaging surge pressures.
Design & Manufactured to API 6D, API 594, ASME B16.34 or Equivalent ◆ P.T Ratings to ASME B16.34
Face to Face Dimensions to API 6D Standard or Short Pattern ◆ Flanged Ends to ASME B16.5, Wafer Ends to API 594
Butt-weld Ends to ASME B16.25 ◆ Valves Marking to MSS SP-25
Inspect & Tested to API 598 or API 594
Sizes Ranges from 2" thru 60"
Structured in One Piece Union Body
Pressure Ratings from Class 150 to Class 2500, PN16 to PN420
Ends Connections in Flanged R.F or RTJ, Wafer, Butt-weld or Hub Ends
- Material Specifications
| Body (forged or cast) | Nickel alloys, carbon, low-alloy, stainless and duplex stainless steels |
| Disc (forged or cast) | Nickel alloys, carbon, low-alloy, stainless and duplex stainless steels |
| Body seat | All API trims. Custom trims available upon request. |
| Disc seat | All API trims. Custom trims available upon request. |
| Internal coating | Fusion bonded epoxy or as specified by customer |
| External coating | Per customer specifications |
- Design Parameters
| Nominal pipe size | 1 to 72 in |
| End connections | Grayloc clamp connectors and compact flanges, ASME B16.5 flanges, ASME B16.47 flanges, ASME B16.25 weld ends, NORSOK L-005 compact flanges, AS4087 flanges, and API 6A flanges Other end connections available upon request |
| Design pressure rating | Suitable for ANSI Class 150 up to 10,000 psig |
| Design temperature range | Per material limit (full metal construction) |
| Flow orientation | Up, down, diagonal, and horizontal |
Check Valve
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