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Class 2B awwa Standard Steel-Ring Flange

Table 2 Class 2B (Blinds from Table 7)

AWWA STANDARD STEEL-RING FLANGE (86 PSI*)

ThicknessDrillingWeight
Nom SizeODSlip-OnBlindBoreBolt CircleHole Dia# of HolesSlip-onBlind
ATBC
490.6250.6254.577.50.758811
5100.6250.6255.668.50.8758914
6110.6880.6886.729.50.87581119
813.50.6880.6888.7211.750.87581528
10160.6880.68810.8814.251121939
12190.6880.71912.88171122858
14210.6880.79114.1918.751.125123478
1623.50.6880.89216.1921.251.1251641110
18250.6880.9518.1922.751.251641132
2027.50.6881.0420.19251.252049175
2229.50.751.13222.1927.251.3752057219
24320.751.21624.1929.51.3752067277
2634.250.8121.30726.1931.751.3752480341
2836.50.8751.39828.19341.3752894414
3038.750.8751.47730.19361.37528105493
3241.750.9361.58132.1938.51.62528132613
3443.750.9381.66134.1940.51.62532137707
364611.75136.1942.751.62532161824
3848.7511.85338.1945.251.62532185980
4050.7511.93340.1947.251.625361931108
42531.1252.02342.1949.51.625362341264
4455.251.1252.11444.1951.751.625402491436
4657.251.1252.19446.1953.751.625402601600
4859.51.252.28548.19561.625443061800
5061.751.252.37750.1958.251.875443172017
52641.252.46852.1960.51.875443392249
5466.251.3752.55954.1962.751.875443972499
60731.52.8260.1969.251.875525083344
66801.6253.09266.19761.875526644403
7286.51.753.35372.1982.51.875608025582
78932……..78.19892.125641000……..
8499.752……..84.1995.52.125641145……..
90106.52.25……..90.191022.438681404……..
96113.252.25……..96.19108.52.438681586……..
1021202.5……..102.19114.52.688721912……..
108126.752.5……..108.19120.752.688722136……..
114133.52.75……..114.19126.752.938762525……..
120140.252.75……..120.19132.752.938762795……..
1261473……..126.19139.253.188803252……..
132153.753……..132.19145.753.188803572……..
138160.53.25……..138.191523.438844101……..
144167.253.25……..144.19158.253.438844475……..

Dimensions are in inches. Weights are in pounds.

Notes: *Pressure rating at atmospheric temperature is 86 psi. These flanges have the same OD and drilling as ANSI/ASME B16.1 class 125 cast-iron flanges. In sizes 24in. and smaller, they also match ANSI/ASME B16.5 150-psi standard for steel flanges.

Class 1B AWWA Standard Steel-Ring Flange PDF (for printing).