Blind Flange

ASME/ANSI B16.5 Class 300 Blind Flanges

SPECIFICATIONS

▪  All dimensions are in inches

▪  These flanges will be furnished with a 1/16" raised face unless otherwise specified

▪  Flat face option available

Nominal Pipe Size	Outside Diameter	Thickness	Raised Face Diameter	Approximate Weight	Bolt Circle	Number of Holes	Diameter of Holes
	(O)	(T)	(R)	(lbs)	(C)
1/2	3.75	0.56	1.38	2	2.63	4	0.63
3/4	4.63	0.63	1.69	3	3.25	4	0.75
1	4.88	0.69	2.00	3	3.50	4	0.75
1 1/4	5.25	0.75	2.50	4	3.88	4	0.75
1 1/2	6.13	0.81	2.88	6	4.50	4	0.88
2	6.50	0.88	3.63	8	5.00	8	0.75
2 1/2	7.50	1.00	4.13	12	5.88	8	0.88
3	8.25	1.13	5.00	16	6.63	8	0.88
3 1/2	9.00	1.19	5.50	21	7.25	8	0.88
4	10.00	1.25	6.19	27	7.88	8	0.88
5	11.00	1.38	7.31	35	9.25	8	0.88
6	12.50	1.44	8.50	50	10.63	12	0.88
8	15.00	1.63	10.63	81	13.00	12	1.00
10	17.50	1.88	12.75	124	15.25	16	1.13
12	20.50	2.00	15.00	185	17.75	16	1.25
14	23.00	2.13	16.25	250	20.25	20	1.25
16	25.50	2.25	18.50	295	22.50	20	1.38
18	28.00	2.38	21.00	395	24.75	24	1.38
20	30.50	2.50	23.00	505	27.00	24	1.38
22	33.00	2.63	25.25	640	29.25	24	1.63
24	36.00	2.75	27.25	790	32.00	24	1.63

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