SIZE CODE   SIZE         Material
50                  1/2"           Brass
75                  3/4"           Brass
100                1"               Brass
125                1 - 1/4"        Brass
150                1 - 1/2"        Brass
200                2"             Brass
250                2 - 1/2"        Brass
300                3"             Brass
400                4"             Brass
500                5"             Brass
600                6"             Brass