Dimensions AWWA‎‏ C228 SD
Stainless Steel‎‏ Blind‎‏ Flanges

Stainless Steel Flanges

AWWA Class SD Stainless Steel Blind Flanges are manufactured to meet AWWA C228 and ANSI 150lbs drill pattern specifications. This blind flange type offers pressure ratings of 175psi for 4in to 12in, and 150psi for flanges 14in and larger at atmospheric temperature.
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	0.650	13.0
6	11.00	9.50	0.875	8	0.693	18.0
8	13.50	11.75	0.875	8	0.813	31.0
10	16.00	14.25	1.000	12	0.953	52.0
12	19.00	17.00	1.000	12	1.117	87.0
14	21.00	18.75	1.125	12	1.133	107.0
16	23.50	21.25	1.125	16	1.265	150.0
18	25.00	22.75	1.250	16	1.331	178.0
20	27.50	25.00	1.250	20	1.448	234.0
22	29.50	27.25	1.375	20	1.568	290.0
24	32.00	29.50	1.375	20	1.661	365.0
26	34.25	31.75	1.375	24	1.786	447.0
28	36.50	34.00	1.375	28	1.906	542.0
30	38.75	36.00	1.375	28	2.008	647.0
32	41.75	38.50	1.625	28	2.150	798.0
34	43.75	40.50	1.625	32	2.252	916.0
36	46.00	42.75	1.625	32	2.370	1071.0
38	48.75	45.25	1.625	32	2.506	1277.0
40	50.75	47.25	1.625	36	2.609	1439.0
42	53.00	49.50	1.625	36	2.729	1648.0
44	55.25	51.75	1.625	40	2.849	1867.0
46	57.25	53.75	1.625	40	2.952	2082.0
48	59.50	56.00	1.625	44	3.072	2340.0
50	61.75	58.25	1.875	44	3.196	2600.0
52	64.00	60.50	1.875	44	3.315	2906.0
54	66.25	62.75	1.875	44	3.435	3235.0
60	73.00	69.25	1.875	52	3.779	4328.0
66	80.00	76.00	1.875	52	4.136	5719.0
72	86.50	82.50	1.875	60	4.480	7245.0

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