The valve disc of the high-temperature check valve is disc-shaped and rotates around the rotating axis of the valve seat channel. Because the inner channel of the valve is streamlined, the flow resistance is smaller than that of the rising butterfly check valve. It is suitable for low flow rates and infrequent changes in flow. For large diameter applications, it is not suitable for pulsating flow, and its sealing performance is not as good as the lifting type. Butterfly check valves are divided into three types: single-disc type, double-disc type and multi-half type. These three forms are mainly divided according to the valve diameter. The purpose is to prevent the medium from stopping the flow or backflow and weakening the hydraulic impact.
| Valve Size | 2″–36″ DN50–DN900 |
|---|---|
| Pressure Class | 150LB to 600LB PN10 to PN64 |
| Materials | WCB, CF8, CF3, CF8M, CF3M, B148, A105, LF2, F304, F316 |
| Design and Manufacturing Standards | API6D |
| Face to Face Standards | ASME B16.10 |
| Flange Dimension Standards | ASME B 16.5, ASME B16.47, EN1092-1 |
| Pressure Test Standards | API 598 (Zero Leakage), API 6D |
| Fire Safety Test Standards | API607 |
| Quality/Product Certifications | ISO9001, ISO14001, ISO18001 |
| Fugitive Emissions | ISO 15848-1, API 622 |
| NACE | NACE MR 0103 NACE MR 0175 |
| Valve operator options | – |
| Shutoff Class | API 598 (Zero Leakage), |
| Bore | Full Bore |
| Process Connection Types | Wafer type, Flange Type, |
- high temp check valve
- Advantages of high temperature check valve
1. Straight-through type, small medium flow resistance;
2. Maintenance and repair are convenient and fast.
3. The middle port of the valve adopts a pressure self-tightening sealing structure. The higher the medium pressure, the better the sealing performance;
4. The opening and closing of the valve are realized by the force of the medium. When the medium returns, it will close automatically and quickly.
5. The sealing surface is made of surfacing Stellite cobalt-based hard alloy, which has high hardness, corrosion resistance, cavitation resistance, excellent scratch resistance, and the valve has a long service life.
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