Dimensions AWWA‎‏ C228 SB
Stainless Steel‎‏ Blind‎‏ Flanges

Stainless Steel Flanges

AWWA Class SB Stainless Steel Blind Flanges are manufactured to meet AWWA C228 and ANSI 150lbs drill pattern specifications. At atmospheric temperature, this Blind flange is pressure-rated to 86psi.
Size	O.D.	B.H.C.	B.H. Dia.	B.H. No.	THK	Weight Lbs
4	9.00	7.50	0.750	8	0.625	11.0
5	10.00	8.50	0.875	8	0.625	13.0
6	11.00	9.50	0.875	8	0.688	18.0
8	13.50	11.75	0.875	8	0.688	27.0
10	16.00	14.25	1.000	12	0.688	38.0
12	19.00	17.00	1.000	12	0.719	56.0
14	21.00	18.75	1.125	12	0.791	75.0
16	23.50	21.25	1.125	16	0.892	105.0
18	25.00	22.75	1.250	16	0.950	126.0
20	27.50	25.00	1.250	20	1.040	167.0
22	29.50	27.25	1.375	20	1.132	209.0
24	32.00	29.50	1.375	20	1.216	267.0
26	34.25	31.75	1.375	24	1.307	327.0
28	36.50	34.00	1.375	28	1.398	397.0
30	38.75	36.00	1.375	28	1.477	475.0
32	41.75	38.50	1.625	28	1.581	586.0
34	43.75	40.50	1.625	32	1.661	675.0
36	46.00	42.75	1.625	32	1.751	790.0
38	48.75	45.25	1.625	32	1.853	944.0
40	50.75	47.25	1.625	36	1.933	1066.0
42	53.00	49.50	1.625	36	2.023	1220.0
44	55.25	51.75	1.625	40	2.114	1385.0
46	57.25	53.75	1.625	40	2.194	1547.0
48	59.50	56.00	1.625	44	2.285	1739.0
50	61.75	58.25	1.875	44	2.377	1934.0
52	64.00	60.50	1.875	44	2.468	2163.0
54	66.25	62.75	1.875	44	2.559	2408.0
60	73.00	69.25	1.875	52	2.820	3225.0
66	80.00	76.00	1.875	52	3.092	4272.0
72	86.50	82.50	1.875	60	3.353	5418.0

Notes..

Dimensions are in inches unless otherwise specified.
O.D. = Outside Diameter
B.H.C. = Bolt Hole Circle
B.H. Dia. = Bolt Hole Diameter
B.H. No. = Number of Bolt Holes
THK = Thickness
Steel material meets the requirements of AWWA C228 specifications, however, other materials are available.

Reference(s) ..
www.awwa.org
https://apiint.com