Swing Check Valve
- Automatic Operation, No External Power: Operates automatically relying solely on the flow of the medium, requiring no manual or electric actuation, leading to a simple and reliable structure.
- Low Flow Resistance: When fully open, the valve provides an almost unobstructed flow path, resulting in significantly lower flow resistance compared to lift check valves.
- Simple Structure, Easy Maintenance: With fewer components and a more straightforward design than other check valve types, it is easy to install and maintain.
- Wide Application Range: Suitable for low-velocity and large-diameter applications, is less prone to clogging, and can be used for various media such as water, steam, oil, and sewage.
- Low Closing Impact: Some designs feature a short disc travel distance, which helps to reduce the water hammer effect during valve closure.
The Swing Check Valve, also known as a non-return or one-way valve, is a valve that automatically controls its opening and closing based on the force of the medium flowing through it. Its core component is a disc that swings freely on a hinge pin within the valve body. When the medium flows in the forward direction, the disc is pushed open by the fluid pressure, creating a passage. When the flow stops or reverses, the disc automatically closes against the seat due to its own weight and the back-pressure of the medium, thus reliably preventing backflow. With its simple structure and low flow resistance, this valve is widely used in industrial and civil pipelines to protect pumps, compressors, and other equipment from the impact of reverse flow.
Product Specification
| Item | Standard |
|---|---|
| Design | BS1868 |
| 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 (A216 WCB) | Material (A217 WC6) | Material (A351 CF8) | Material (A351 CF8M) | Material (A351 CF3) | Material (A351 CF3M) |
|---|---|---|---|---|---|---|
| Body | A216 WCB | A217 WC6 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
| Valve cover | A216 WCB | A217 WC6 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
| valve plate | A216 WCB | A217 WC6 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
| sealing face | 2Cr13 | STL | Body/STL | Body/STL | Body/STL | Body/STL |
| Hinge Pin | A182 F6a | A182 F11 | A182 F304 | A182 F316 | A182 F304L | A182 F316L |
| Gasket | 304+Flexible Graphite | 304+Flexible Graphite | 304+Flexible Graphite | 304+Flexible Graphite | 304+Flexible Graphite | 304+Flexible Graphite |
| Bolt | A193 B7 | A193 B7 | A193 B8 | A193 B8M | A193 B8M | A193 B8M |
| Nut | A194 2H | A194 6 | A194 8 | A194 8M | A194 8M | A194 8M |
| Temperature | -29~425°C | -29~540°C | -46~425°C | -46~425°C | -46~425°C | -46~425°C |
| Medium | Water, Steam, Oil | Water, Steam | Nitric acid weakly corrosive media | Nitric acid weakly corrosive media | Nitric acid weakly corrosive media | Nitric acid weakly corrosive media |
No drawing available.
