API 6D Swing Check Valve, ASTM A216 WCB, 4 IN, Bolted Bonnet

The API 6D Swing Check Valve from a reputable manufacturer is designed for reliable one-way flow control. Constructed with an ASTM A216 WCB cast carbon steel body, it offers robust durability and strength. The valve features a 4-inch (DN100) size and a pressure rating of Class 300 LB, making it suitable for high-pressure applications. Equipped with RF flanged ends and a bolted bonnet, it ensures secure and leak-tight connections.

Product Name: API 6D Swing Check Valve
Type: Swing Check Valve
Design Standard: API 6D
Body Material: ASTM A216 WCB, Cast Carbon Steel
Size: 4 Inch, DN100
Pressure: 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 their equivalents. 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's 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 environmentally friendly and reliable. In its standard configuration, the swing check valve includes a bolted cover and a free-swinging clapper, which acts as the closing member and responds dynamically to flow conditions. 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 are recommended to ensure smooth operation and prevent unwanted vibrations.

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

» Function: The cast steel swing check valve is specifically designed to prevent backflow in pipelines. It ensures unidirectional flow, protecting systems from reverse flow that could cause damage or inefficiencies.
» Flow Dynamics: The valve allows flow to pass through in a straight line, minimizing pressure drop. As the media flows through the line, the disc swings open, facilitating smooth passage. When back pressure occurs, the disc is pushed closed, effectively blocking reverse flow.
» Installation Flexibility: Cast steel swing check valves can be installed in both horizontal and vertical lines. However, it is crucial to install them in the correct orientation relative to the media flow. The valve body is marked with a flow direction arrow to guide proper installation.
» Customization Options: To meet diverse customer requirements, a range of accessories is available. These include bypasses, locking devices, counterweights, and more. These accessories enhance the valve's functionality and adaptability to specific applications.