ANSI/API Standard Check Valve / American
API / ASME Standard Check Valve – YONCO Class 150 to 2500 The YONCO American Standard Check Valve is meticulously designed and manufactured in strict compliance […]
API / ASME Standard Check Valve – YONCO Class 150 to 2500
The YONCO American Standard Check Valve is meticulously designed and manufactured in strict compliance with API and ASME specifications. Operating automatically via the kinetic energy of the fluid, this reliable non-return valve effectively prevents media backflow. It is an essential safeguard for pipeline systems, protecting pumps and driving motors from reversal damage and preventing the accidental discharge of container media.
Compliance & Engineering Standards
| Design Parameter | Applicable Standard |
|---|---|
| Design & Manufacture | API 6D / ASME B16.34 |
| Face-to-Face Dimension | ASME B16.10 |
| Flange Connection | ASME B16.5 |
| Pressure-Temperature Rating | ASME B16.34 |
| Test & Inspection | API 598 / API 6D |
Performance & Material Options
- Pressure Rating: Class 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB.
- Shell Test Pressure: 1.5 times the nominal pressure at room temperature.
- Seal Test Pressure: 1.1 times the nominal pressure at room temperature.
| Body/Bonnet Material | Trim / Sealing Face | Temp Range | Suitable Media |
|---|---|---|---|
| A216 WCB (Carbon Steel) | 13Cr / Stellite (STL) | -29°C ~ 425°C | Water, Steam, Oil |
| A217 WC6 (Alloy Steel) | Stellite (STL) | -29°C ~ 540°C | High-Temp Steam, Oil |
| A351 CF8 / CF8M (Stainless) | Integral / Stellite (STL) | -46°C ~ 425°C | Corrosive Media, Acids |
| A351 CF3 / CF3M (Low Carbon) | Integral / Stellite (STL) | -46°C ~ 425°C | Highly Corrosive Media |
Note: All valves are equipped with flexible graphite gaskets and appropriate ASTM A193/A194 bolting (e.g., B7/2H, B8M/8M) depending on the material grade.
Certified API Check Valves by YONCO
When your project requires strict adherence to ASME and API standards, YONCO delivers uncompromised quality. We provide complete dimensional drawings (including sizes from 2″ to 12″ and above) and comprehensive material test reports (MTRs) for every API standard check valve we manufacture.
