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LONG WELDING NECK

The LWN or Long Weld(ing) Neck Flange is available through 24" sizes meeting the ASME B16.5 standard (all pressure classes). FVC can also meet the specifications of ASME B16.47, Series A & Series B.  FVC maintains a large inventory of SA105 and some inventory of SA350-LF2, SA182-F11, and SA182-F22. Modified versions of the LWN can also be furnished as a "custom" product.

The LWN is FVC's basic standard flanged connection.  This seamless product offers a nominal bore as well as a heavy wall thickness making it ideal for highly corrosive applications.