Check Valves
Flanged High-Pressure Check Valve
- Engineered for High Pressure: Pressure-containing parts like the body and bonnet are made from high-quality forged steel with a robust construction to safely handle extreme working pressures.
- Flanged Connection: Offers convenience for installation and in-line maintenance, providing more flexibility than welded-end types.
- Reliable and Durable Sealing: The disc and seat sealing surfaces are overlaid with Stellite cobalt-based hard alloy, providing high hardness and excellent resistance to erosion and wear.
- Lift-Check Structure: The disc moves vertically along the body's centerline, ensuring rapid closure and good sealing performance.
- Automatic Operation: Functions automatically based on medium pressure without the need for external power.
The Flanged High-Pressure Check Valve is an automatic valve engineered for high-pressure piping systems, featuring flanged end connections. Its core function is to permit unidirectional flow and automatically prevent any backflow, thereby protecting critical equipment such as pumps and compressors. This valve type typically employs a lift-check design with a high-strength forged body. The disc and seat sealing surfaces are overlaid with hard alloys to withstand the erosion and corrosion from high-pressure, high-velocity fluids, ensuring reliable sealing and an extended service life under demanding conditions.
Product Specification
| Item | Standard |
|---|---|
| Design | ASME B16.34, API 602 |
| Structure Length | ASME B16.10 |
| Connection flange | ASME B16.5 |
| Test and Inspection | API 598 |
Performance Parameter (Reference)
| Parameter | 600(Lb) | 900(Lb) | 1500(Lb) | 2500(Lb) |
|---|---|---|---|---|
| Nominal Pressure PN (MPa) | 10.0 | 15.0 | 25.0 | 42.0 |
| Case Test Pressure (MPa) | 15.0 | 22.5 | 37.5 | 63.0 |
| High-pressure Sealing Test pressure (MPa) | 11.0 | 16.5 | 27.5 | 46.2 |
Main Components Material
| Part Name | Material (High Temp & Pressure) |
|---|---|
| Body/Bonnet | A105, A350 LF2, A182 F11, A182 F22, A182 F304, A182 F316 |
| Disc | A182 F6a, F304, F316 (with STL face) |
| Sealing Face | Overlaid STL Alloy |
| Bolt/Nut | A193 B7/A194 2H, A193 B16/A194 4 |
| Temperature | -29°C ~ 570°C |
No drawing available.
