The two piece adapter flange is available in sizes 1 in, 1-1/4 in, 1-1/2 in, 2 in, 2-1/2 in, 3 in and 4 in. They are manufactured to ASME B16.24 cast copper alloy pipe flanges and flanged fittings and ANSI/ASME 16.5 pipe flanges and flanged fittings standards. Powder coating isolates the dissimilar metals, preventing electrolysis. Flanges are Class 150. It is a two-piece design multi-purpose adapter flange for use in general utility, potable water, chilled and hydronic heating water, vacuum, fire sprinkler, and compressed air service.