Flange - Blind, ANSI Class 400, B16.5, RF (in)

Flange - Blind, ANSI Class 400, B16.5, RF (in) This datasheet is for blind flanges that have a raised face connection. Dimensions per ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard Bolt circle diameters are 1/8 inch larger than bolt diameter.
Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Number of Bolt Holes NBH	Diameter of Bolt Holes DBH	Bolt Circle Diameter P	Approx Weight (lb) AW
1/2	3 3/4	1 3/8	9/16	4	5/8	2 5/8	2
3/4	4 5/8	1 11/16	5/8	4	3/4	3 1/4	3
1	4 7/8	2	11/16	4	3/4	3 1/2	4
1 1/4	5 1/4	2 1/2	13/16	4	3/4	3 7/8	6
1 1/2	6 1/8	2 7/8	7/8	4	7/8	4 1/2	8
2	6 1/2	3 5/8	1	8	3/4	5	10
2 1/2	7 1/2	4 1/8	1 1/8	8	7/8	5 7/8	15
3	8 1/4	5	1 1/4	8	7/8	6 5/8	20
3 1/2	9	5 1/2	1 3/8	8	1	7 1/4	29
4	10	6 3/16	1 3/8	8	1	7 7/8	33
5	11	7 5/16	1 1/2	8	1	9 1/4	44
6	12 1/2	8 1/2	1 5/8	12	1	10 5/8	61
8	15	10 5/8	1 7/8	12	1 1/8	13	100
10	17 1/2	12 3/4	2 1/8	16	1 1/4	15 1/4	155
12	20 1/2	15	2 1/4	16	1 3/8	17 3/4	226
14	23	16 1/4	2 3/8	20	1 3/8	20 1/4	310
16	25 1/2	18 1/2	2 1/2	20	1 1/2	22 1/2	398
18	28	21	2 5/8	24	1 1/2	24 3/4	502
20	30 1/2	23	2 3/4	24	1 5/8	27	621
22	33	25 1/4	2 7/8	24	1 3/4	29 1/4	685
24	36	27 1/4	3	24	1 7/8	32	936