ASME B16.47 Series A Flanges Class 900

Technical Drawings

Dimensions of 900# B16.47 Series A flanges.

NPS	D	K	G	X
26"	1085	952.5	749	775
28"	1170	1022.4	800	832
30"	1230	1085.8	857	889
32"	1315	1155.7	914	946
34"	1395	1225.6	965	1006
36"	1460	1289.0	1022	1064
38"	1460	1289.0	1099	1073
40"	1510	1339.8	1162	1127
42"	1560	1390.6	1213	1176
44"	1650	1463.7	1270	1235
46"	1735	1536.7	1334	1292
48"	1785	1587.5	1384	1343
50"	-	-	-	-
52"	-	-	-	-
54"	-	-	-	-
56"	-	-	-	-
58"	-	-	-	-
60"	-	-	-	-

*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	160.4	139.7	286
28"	711.2	171.5	142.9	298
30"	762.0	182.6	149.3	311
32"	812.8	193.7	158.8	330
34"	863.6	204.8	165.1	349
36"	914.4	214.4	171.5	362
38"	965.2	215.9	190.5	352
40"	1016.0	223.9	196.9	364
42"	1066.8	231.8	206.4	371
44"	1117.6	242.9	214.4	391
46"	1168.4	255.6	225.5	411
48"	1219.2	263.6	233.4	419
50"	-	-	-	-
52"	-	-	-	-
54"	-	-	-	-
56"	-	-	-	-
58"	-	-	-	-
60"	-	-	-	-

*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 900 Series A flange. All dimensions are in mm.

NPS	n	d	l	r
26"	20	2-7/8	2-3/4	11
28"	20	3-1/8	3	13
30"	20	3-1/8	3	13
32"	20	3-3/8	3-1/4	13
34"	20	3-5/8	3-1/2	14
36"	20	3-5/8	3-1/2	14
38"	20	3-5/8	3-1/2	19
40"	24	3-5/8	3-1/2	21
42"	24	3-5/8	3-1/2	21
44"	24	3-7/8	3-3/4	22
46"	24	4-1/8	4	22
48"	24	4-1/8	4	24
50"	-	-	-	-
52"	-	-	-	-
54"	-	-	-	-
56"	-	-	-	-
58"	-	-	-	-
60"	-	-	-	-

*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.