ASME B16.47 Series A Flanges Class 400

Technical Drawings

Dimensions of 400# B16.47 Series A flanges.

NPS	D	K	G	X
26"	970	876.3	749	727
28"	1035	939.8	800	783
30"	1090	997.0	857	837
32"	1150	1054.1	914	889
34"	1205	1104.9	965	945
36"	1270	1168.4	1022	1000
38"	1205	1117.6	1035	1003
40"	1270	1174.6	1092	1054
42"	1320	1225.6	1143	1108
44"	1385	1282.7	1200	1159
46"	1440	1339.8	1257	1213
48"	1510	1403.4	1308	1267
50"	1570	1460.5	1362	1321
52"	1620	1511.3	1413	1372
54"	1700	1581.2	1470	1426
56"	1755	1632.0	1527	1480
58"	1805	1682.8	1578	1530
60"	1885	1752.6	1635	1584

*D: outside diameter of flange; K: diameter of bolt circle; G: diameter of raised face; X: diameter of hub of flange; All dimensions are in mm.

NPS	A	TBL	TWN	Y
26"	660.4	98.5	88.9	194
28"	711.2	104.8	95.3	206
30"	762.0	111.2	101.6	219
32"	812.8	115.9	108.0	232
34"	863.6	122.3	111.2	241
36"	914.4	128.6	114.3	251
38"	965.2	123.9	123.9	206
40"	1016.0	130.2	130.2	216
42"	1066.8	133.4	133.4	224
44"	1117.6	139.7	139.7	233
46"	1168.4	146.1	146.1	244
48"	1219.2	152.4	152.4	257
50"	1270.0	158.8	157.2	268
52"	1320.8	163.6	162.0	276
54"	1371.6	171.5	169.9	289
56"	1422.4	176.3	174.7	298
58"	1473.2	181.0	177.8	306
60"	1524.0	189.0	185.8	319

*A: Diameter of hub top of WN; T_BL: minimum thickness of blind flange; T_WN: minimum thickness of WN flange. Y: length through hub of WN; t: 7mm height of RF for Class 400 Series A flange. All dimensions are in mm.

NPS	n	d	l	r
26"	28	1-7/8	1-3/4	11
28"	28	2	1-7/8	13
30"	28	2-1/8	2	13
32"	28	2-1/8	2	13
34"	28	2-1/8	2	14
36"	32	2-1/8	2	14
38"	32	1-7/8	1-3/4	14
40"	32	2	1-7/8	14
42"	32	2	1-7/8	14
44"	32	2-1/8	2	14
46"	36	2-1/8	2	14
48"	28	2-3/8	2-1/4	14
50"	32	2-3/8	2-1/4	14
52"	32	2-3/8	2-1/4	14
54"	28	2-5/8	2-1/2	14
56"	32	2-5/8	2-1/2	14
58"	32	2-5/8	2-1/2	14
60"	32	2-7/8	2-3/4	14

*n: number of bolt holes; d: diameter of bolt hole; l: diameter of bolt; r: minimum fillet radius for WN. d and l are in inch units, while r is in mm unit.

ASME B16.47 Series A Flanges, by Class
150	300	400	600	900	-
ASME B16.47 Series B Flanges, by Class
75	150	300	400	600	900

*Click to view the dimensions and weights of flanges of ASME B16.47 Series A and Series B at any pressure rating.