API 6D Swing Check Valves, A216 WCB, 16 Inch, CL900, RTJ, BB

The API 6D Swing Check Valves are robust industrial valves designed for reliable performance in high-pressure applications. Manufactured by a reputable supplier, these valves feature a cast carbon steel ASTM A216 WCB body, ensuring durability and strength. With a 16-inch (DN400) size and rated for Class 900 LB and PN150 pressure, they are equipped with RTJ flanged ends and a bolted cover for secure installation and maintenance. These valves are ideal for preventing backflow in critical pipeline systems, offering excellent sealing and operational efficiency.

Product Name: API 6D Swing Check Valves, Bolted Cover
Type: Swing Check Valve
Design Standard: API 6D
Body Material: ASTM A216 WCB
Size: 16 Inch, DN400
Pressure: Class 900 LB, PN150
End Connection: RTJ Flanged
Medium: Water, Oil, Gas, etc
Temperature Range: -29°C to 595°C

Universal Cast Steel Check Valves are meticulously designed and manufactured in strict compliance with international standards such as API 6D, BS1868, ASME B16.34, or equivalent. These valves are engineered to minimize flow resistance and pressure drop, ensuring optimal performance and efficiency. They are specifically designed for horizontal installation, with a lapped and screwed seat ring that guarantees a tight seal and long-lasting service. The valve's disc is precisely engineered, accurately machined, and guided to ensure efficient automatic shut-off at zero pressure. This design feature, combined with a compact structure and low-emission service capability, makes our check valves ideal for a wide range of applications. In their standard configuration, these swing check valves feature a bolted cover and a free-swinging clapper. The clapper, which is the closing member, responds dynamically to the flow conditions, ensuring reliable operation. While swing check valves are best suited for horizontal pipeline installations, heavier discs may experience chattering issues. To mitigate this, dampers or counterweights can be provided to enhance stability and performance.

Technical Specification

» Type: Swing Check Valve
» Nominal Diameter: NPS 2-24 Inch (DN50-DN600)
» Design Pressure: Class 150-2500 LB (PN10-PN420)
» Material: ASTM A216 WCB, WCC, 217 WC6, WC9, C5, C12A, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C
» End Connections: Flanged (FF, RF, RTJ) to international standards
» Design and Manufacture: BS 1868, API 6D, DIN 3352
» Face to Face (End to End): ANSI B16.10, EN 558 series
» Flanged Connection: ASME B16.5, ASME B16.47, EN 1092 series
» Butt Welded End: ANSI B16.25
» Test and Inspection: API 598, ISO 5208, EN 12266-1

Product Features

» Backflow Prevention: The cast steel swing check valve is designed to prevent backflow in the pipeline. It allows media to flow in a straight line through the valve, resulting in minimal pressure drop. The disc swings into the open position as the media flows through the line, and back pressure in the line holds the disc in the closed position to prevent reverse flow.
» Flexible Installation Options: Cast steel swing check valves can be installed in both horizontal and vertical lines. However, they must be installed in the correct orientation relative to the media flow, as indicated by the flow direction arrow marked on the valve body.
» Customizable Accessories: A variety of accessories are available to meet specific customer requirements. These include bypasses, locking devices, counterweights, and more, ensuring that the valve can be tailored to fit a wide range of applications and operational needs.