API 6D Swing Check Valves, A216 WCB, 8 IN, CL300 LB, BB, RF

The China API 6D Swing Check Valves Factory produces high-performance swing type check valves designed to meet stringent industry standards. These valves are crafted from ASTM A216 WCB carbon steel, ensuring robustness and durability. With an 8-inch diameter and a pressure rating of 300 LB, they are suitable for heavy-duty applications. The bolted bonnet design facilitates easy maintenance and inspection, while the raised face (RF) flanged ends provide secure and reliable connections.

Product Name: API 6D Swing Check Valve
Type: Swing Check Valve
Design Standard: API 6D
Body Material: ASTM A216 WCB, Carbon Steel
Size: 8 Inch, DN200
Pressure Rating: Class 300 LB, PN50
End Connection: RF 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, making them suitable for horizontal installation only. The lapped and screwed-in seat ring ensures a tight seal and long-lasting service. The valve's disc is precisely designed, machined, and guided for efficient automatic shut-off at zero pressure, featuring a compact structure and low-emission service. In their standard configuration, swing check valves have a bolted cover and a free-swinging clapper, which acts as the closing member responding to flow conditions. Swing check valves are ideally suited for horizontal pipeline installations. However, for heavier disc weights, chattering issues may arise, necessitating the use of dampers or counterweights.

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

» Flow Control and Prevention of Backflow: Cast steel swing check valves are designed to prevent backflow in pipelines. The flow passes through the valve in a straight line, resulting in minimal pressure drop. As the media flows through the line, the disc swings into the open position, allowing smooth passage. When back pressure is present, the disc is held in the closed position, effectively preventing reverse flow.
» Versatile 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. Proper installation ensures optimal performance and prevents potential issues.
» Customizable Accessories: A variety of accessories are available to meet specific customer requirements. These include bypasses, locking devices, counterweights, and more. These accessories enhance the functionality and adaptability of the valves to different operational needs and environments.