Dimensions AWWA‎‏ C228 SF
Stainless Steel‎‏ Blind‎‏ Flanges

Stainless Steel Flanges

AWWA Class SF Stainless Steel Blind Flanges are manufactured to meet AWWA C228 and ANSI 300lbs drill pattern specifications. At atmospheric temperature, this Blind flange is pressure-rated to 300psi.
Size	O.D.	B.H.C.	B.H. Dia.	B.H. No.	THK	Weight Lbs
4	10.00	7.88	0.875	8	1.130	23.0
5	11.00	9.25	0.875	8	1.210	31.0
6	12.50	10.62	0.875	12	1.310	43.0
8	15.00	13.00	1.000	12	1.310	62.0
10	17.50	15.25	1.125	16	1.500	96.0
12	20.50	17.75	1.250	16	1.630	143.0
14	23.00	20.25	1.250	20	1.940	214.0
16	25.50	22.50	1.375	20	2.140	291.0
18	28.00	24.75	1.375	24	2.250	369.0
20	30.50	27.00	1.375	24	2.330	458.0
22	33.00	29.25	1.375	24	2.500	580.0
24	36.00	32.00	1.625	24	2.690	737.0
26	38.25	34.50	1.875	28	3.000	910.0
28	40.75	37.00	1.875	28	3.130	1087.0
30	43.00	39.25	1.875	28	3.166	1232.0
32	45.25	41.50	1.875	28	3.332	1444.0
34	47.50	43.50	1.875	28	3.475	1667.0
36	50.00	46.00	2.125	32	3.671	1923.0
38	52.25	48.00	2.125	32	3.815	2193.0
40	54.25	50.25	2.125	36	3.982	2462.0
42	57.00	52.75	2.125	36	4.171	2863.0
44	59.25	55.00	2.125	36	4.338	3230.0
46	61.50	57.25	2.125	40	4.505	3608.0
48	65.00	60.75	2.125	40	4.781	4300.0

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