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ASME B16.47 Series B
Class 900 Nlind

ASME B16.47 Series B Class 900 Blind Flange Technical Drawing

DIMENSIONAL DATA

NPS	Flange OD (O)	Thickness (T)	Raised Face Diameter (R)	Point Fillet Radius (r)	Bolt Circle Dia.	No. of Holes	Diameter of Bolt Hole	Hole Dia.
26	40.25	6.06	30.00	0.44	35.50	20	2-5/8	2-1/2
28	43.50	6.56	32.25	0.50	38.25	20	2-5/8	2-3/4
30	46.50	6.93	34.50	0.50	40.75	20	3-1/8	3
32	48.75	7.31	36.50	0.50	43.00	20	3-1/8	3
34	51.75	7.68	39.00	0.56	45.50	20	3/8	3-1/4
36	53.00	7.94	40.50	0.56	47.25	24	3/8	3
38	57.50	8.50	43.25	0.75	50.75	20	3-5/8	3-1/2
40	59.50	8.81	45.75	0.81	52.75	24	3-5/8	3-1/2
42	61.50	9.12	47.75	0.81	54.75	24	3-5/8	3-1/2
44	64.88	9.56	50.00	0.88	57.62	24	3-7/8	3-3/4
46	68.25	10.06	52.50	0.88	60.50	24	4-1/8	4
48	70.25	10.38	54.50	0.94	62.50	24	4-1/8	4

NPS	Flange OD (O)	Thickness (T)	Raised Face Diameter (R)	Point Fillet Radius (r)	Bolt Circle Dia.	No. of Holes	Diameter of Bolt Hole	Hole Dia.
26	1022	153.9	762	11	901.7	20	2-5/8	2-1/2
28	1105	166.6	819	13	971.6	20	2-7/8	2-3/4
30	1181	176.0	876	13	1035.0	20	3-1/8	3
32	1238	185.7	927	13	1092.2	20	3-1/8	3
34	1314	195.0	991	14	1155.7	20	3-3/8	3-1/4
36	1346	201.7	1029	14	1200.2	24	3-1/8	3
38	1460	215.9	1099	19	1289.0	20	3-5/8	3-1/2
40	1511	223.8	1162	21	1339.8	24	3-5/8	3-1/2
42	1562	231.6	1213	21	1390.6	24	3-5/8	3-1/2
44	1648	242.8	1270	22	1463.5	24	3-7/8	3-3/4
46	1734	255.5	1334	22	1536.7	24	4-1/8	4
48	1784	263.7	1384	24	1587.5	24	4-1/8	4

Dimensions are based on ASME B16.47 Series B Class 900 flange requirements. Refer to the applicable standard for complete dimensional requirements.

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