API 6D Axial Check Valve, ASTM A216 WCB, 10 IN, CL2500, RTJ

Product Name: ASTM A216 WCB Axial Flow Check Valve
Design Standard: API 6D, ASME B16.34
Body Material: ASTM A216 WCB
Size: 10 Inch, DN250
Pressure: Class 2500 LB, PN420
End Connection: RTJ Flanged

In addition to the general function of a check valve, the axial flow check valve offers the advantages of reduced noise and lower impact, thanks to the use of a spring. Its axial flow design results in minimal fluid resistance, high flow capacity, and compact dimensions. These features make the axial flow check valve an excellent choice for use at the outlet of pumps in pipeline systems transporting oil, gas, and other fluids. It is particularly suitable for applications where non-return functionality is required, such as in oil, gas, and water pipelines.

Technical Specifications

» Nominal Diameter: NPS 2-36 Inch (DN50-DN900)
» Design Pressure: Class 150-2500 LB (PN10-PN420)
» Materials: ASTM A216 WCB, WCC, A217 WC6, WC9, C5, C12A, A352 LCB, LCC, A351 CF8, CF8M, CF3, CF3M, CF8C
» Design and Manufacture: GB/T 21387, API 6D, ASME B16.34
» Face to Face (End to End): GB/T 12221, ANSI B16.10, API 6D
» Flanged Connection: GB/T 9113, ASME B16.5
» Test and Inspection: GB/T 26480, API 598
» End Connections: Flanged (FF, RF, RTJ) to international standards
» Temperature Range: -29°C to 595°C
» Medium: Water, gas, oil, etc.

Features of Axial Flow Check Valve

» One-piece body design for reduced weight, enhanced strength, and easy maintenance.
» The spring's thrust force ensures the valve stays in the closed position even without the medium's force.
» Excellent sealing mechanism allows the valve to be installed in any direction, with the disc achieving a perfect seal against the seat.
» Axial flow structure and accurately designed flow passage minimize pressure loss, stabilize medium flow, and prevent cavitation erosion. The disc returns to its sealing position with spring force and sub-pressure generated by the medium flow, ensuring no direct impact from the medium on the back side of the disc. This results in a low-noise operation.
» The unique structure and surface treatment of the disc carrier and pin eliminate valve sticking, ensuring smooth opening and closing. This prevents common issues such as the disc not staying centered in the sealing position due to gravity, providing lasting and effective sealing.
» In the closed position, the spring's thrust force slightly exceeds the combined forces of the disc's gravity and the friction between the disc and sealing ring, allowing the disc to return to its sealing position under low pressure. This ensures reliable pump operation, regardless of installation orientation.