Large-diameter Series A

Large-diameter Series A identifies one of the two distinct dimensional series in the ASME B16.47 standards context. The Series A designation separates it from Series B; the two should not be treated as interchangeable merely because nominal size is similar, because the mating dimensional pattern must be selected as a system. This catalog description establishes only the series identity and does not claim Fittopipe compliance with a particular edition. Flange type, class, facing, dimensions and mating compatibility require project-specific confirmation.