6 Inch Swing Check Valve, API 6D, ASTM A216 WCB, 150 LB, BB

Product Name: 6 Inch Swing Check Valve, Bolted Cover
Type: Swing Check Valve
Design Standard: API 6D
Body Material: Carbon Steel ASTM A216 WCB
Size: 6 Inch, DN150
Pressure: Class 150 LB, PN20
End Connection: RF Flanged
Medium: Water, Oil, Gas, etc
Temperature Range: -29°C to 595°C

Universal Cast Steel Check Valves are 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, making them suitable for horizontal installation only. The lapped and screwed seat ring ensures a tight seal and long service life. The valve disc is precisely designed and guided for efficient automatic shut-off at zero pressure, featuring a compact structure and low emission service. Standard swing check valves come with a bolted cover and a free-swinging clapper, which responds to flow conditions. For heavier discs, dampers or counterweights may be required to prevent chattering.

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

» Prevent Backflow: Cast steel swing check valves are designed to prevent reverse flow in pipelines. The media flows in a straight line through the valve, resulting in minimal pressure drop. The disc swings open with the flow and closes with back pressure.
» Flexible Installation: These valves can be installed in horizontal or vertical lines, provided they are oriented correctly according to the flow direction arrow marked on the body.
» Customizable Accessories: Available accessories include bypasses, locking devices, counterweights, and more, to meet specific customer requirements.