8 Inch Swing Check Valve, API 6D, ASTM A216 WCB, CL1500, RTJ

The 8-inch Swing Check Valve from China is a high-pressure valve designed to meet API 6D standards. It features a carbon steel ASTM A216 WCB body, ensuring strength and durability. The valve has a Class 1500 LB pressure rating and a DN200, PN250 designation, making it suitable for high-pressure applications. It comes with RTJ flanged ends for secure, leak-proof connections.

Product Name: 8 Inch Swing Check Valve
Type: Swing Check Valve
Design Standard: API 6D
Body Material: ASTM A216 WCB Carbon Steel
Size: 8 Inch, DN200
Pressure: Class 1500 LB, PN250
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, BS 1868, ASME B16.34, or equivalent. These valves are engineered to minimize flow resistance and pressure drop, ensuring optimal performance. 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 disc is precisely designed and machined to ensure efficient automatic shut-off at zero pressure. It features a compact structure and low-emission service, making it suitable for a wide range of applications. In its standard configuration, the swing check valve includes a bolted cover and a free-swinging clapper. The clapper, which is the closing member, responds dynamically to flow conditions to maintain proper operation.
While swing check valves are ideally suited for horizontal pipeline installations, heavier disc weights may lead to chattering issues. To mitigate this, dampers or counterweights should be installed to ensure smooth operation and prevent potential disruptions.

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

» Preventing Backflow: Cast steel swing check valves are designed to prevent reverse flow in pipelines. The flow passes through the valve in a straight line, resulting in minimal pressure drop. As the fluid flows through the line, the disc swings into the open position. When back pressure occurs, the disc is held in the closed position to prevent reverse flow.
» Flexible Installation Options: Cast steel swing check valves can be installed in both horizontal and vertical pipelines. However, they must be installed in the correct orientation relative to the flow direction, 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 the valve can be tailored to fit various application needs.