Lift Check Valve
- Automatic Operation, No External Power: Functions automatically based on the pressure differential of the medium and the disc's own weight, ensuring reliable operation.
- Excellent Sealing Performance: The short closing stroke of the disc and minimal wear on the sealing surface allow it to maintain a good seal over a long period.
- Compact Structure: The body structure is more compact and has a shorter face-to-face length than a swing check valve, saving installation space.
- Specific Installation Requirements: Globe-style lift check valves are generally restricted to horizontal pipelines to ensure the disc can return to the seat properly by gravity.
The Lift Check Valve is a valve that operates automatically based on the pressure differential of the medium, with its disc moving up and down along the vertical centerline of the valve body. When the inlet pressure is sufficient, the fluid pushes the disc off the valve seat, creating a passage. When the flow stops or reverses, the disc automatically returns to the seat under its own weight and the back-pressure, thereby cutting off any backflow. This valve type is compact and offers excellent sealing, though its flow resistance is slightly higher than that of a swing check valve. It is typically installed on horizontal pipelines and is suitable for clean media, widely used in water, steam, and oil pipeline systems.
Product Specification
| Item | Standard |
|---|---|
| Design | BS1868 (Reference) |
| Structure Length | ASME B16.10 |
| Connection flange | ASME B16.5 |
| Test and Inspection | API 598 |
| Pressure and temperature reference | ASME B16.34 |
Performance Parameter
| Parameter | 150(Lb) | 300(Lb) | 600(Lb) | 900(Lb) | 1500(Lb) |
|---|---|---|---|---|---|
| Nominal Pressure PN (MPa) | 2.0 | 5.0 | 10.0 | 15.0 | 25.0 |
| Case Test Pressure (MPa) | 3.0 | 7.5 | 15.0 | 22.5 | 37.5 |
| High-pressure Sealing Test pressure (MPa) | 2.2 | 5.5 | 11.0 | 16.5 | 27.5 |
| Maximum Working pressure (MPa) | ≤2.0 | ≤5.2 | ≤10.4 | ≤15.6 | ≤25.8 |
Main Components Material
| Part Name | Material (Carbon Steel) | Material (Stainless Steel) |
|---|---|---|
| Body/Cover | A216 WCB | A351 CF8 / CF8M |
| Disc | A216 WCB | A351 CF8 / CF8M |
| Sealing Face | 2Cr13 / STL | Body/STL |
| Gasket | 304+Flexible Graphite | 304+Flexible Graphite |
| Bolt/Nut | A193 B7 / A194 2H | A193 B8 / A194 8 |
| Temperature | -29~425°C | -46~425°C |
| Medium | Water, Steam, Oil, etc. | Nitric acid weakly corrosive media |
No drawing available.
