Weld Neck Flange ASME B16.5 Class 400
The Drawing Following Data ASME B16.5 Standard Pipe Flanges and Flanged Fittings
ASME B16.5 – 2009
Pipe Flanges and Flanged fittings: 1/2″ through 24″ NPS.
This Standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings.
Raised Face Flanges (RF):
RF flanges seal with a flat gasket designed for installation between the raised faces of two mating flanges (both with raised faces). The raised faces have a prescribed texture to increase their gripping and retaining force on this flat gasket. Some users of raised face flanges specify the use of spiral wound gaskets.
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