ASME B16.5 Slip On Flange Class 400

Technical Drawing

Dimensions and Weights

NPS	D	G	B	X
1/2"	95	34.9	22.2	38
3/4"	115	42.9	27.7	48
1"	125	50.8	34.5	54
1-1/4"	135	63.5	43.2	64
1-1/2"	155	73.0	49.5	70
2"	165	92.1	61.9	84
2-1/2"	190	104.8	74.6	100
3"	210	127.0	90.7	117
3-1/2"	230	139.7	103.4	133
4"	255	157.2	116.1	146
5"	280	185.7	143.8	178
6"	320	215.9	170.7	206
8"	380	269.9	221.5	260
10"	445	323.8	276.2	321
12"	520	381.0	327.0	375
14"	585	412.8	359.2	425
16"	650	469.9	410.5	483
18"	710	533.4	461.8	533
20"	775	584.2	513.1	587
22"	840	641.4	564.4	640
24"	915	692.2	616.0	702

*D: outside diameter of flange; G: outside diameter of raised face; X: diameter of hub at base; B: bore diameter of 400LB S/O flange. All units are mm.

NPS	K	n	d	l
1/2"	66.7	4	5/8	1/2
3/4"	82.6	4	3/4	5/8
1"	88.9	4	3/4	5/8
1-1/4"	98.4	4	3/4	5/8
1-1/2"	114.3	4	7/8	3/4
2"	127.0	8	3/4	5/8
2-1/2"	149.2	8	7/8	3/4
3"	168.3	8	7/8	3/4
3-1/2"	184.2	8	1	7/8
4"	200.0	8	1	7/8
5"	235.0	8	1	7/8
6"	269.9	12	1	7/8
8"	330.0	12	1-1/8	1
10"	387.4	16	1-1/4	1-1/8
12"	450.8	16	1-3/8	1-1/4
14"	514.4	20	1-3/8	1-1/4
16"	571.5	20	1-1/2	1-3/8
18"	628.6	24	1-1/2	1-3/8
20"	685.8	24	1-5/8	1-1/2
22"	743.0	24	1-3/4	1-5/8
24"	812.8	24	1-7/8	1-3/4

*K: diameter of bolt circle; n: number of bolts; d: diameter of bolt holes; l: diameter of bolts;  All units are mm except that d and l are provided in inch.

NPS	Y	T	L	Mass
1/2"	22	14.3	75	0.74
3/4"	25	15.9	90	1.27
1"	27	17.5	90	1.52
1-1/4"	29	20.7	95	2.03
1-1/2"	32	22.3	110	2.96
2"	37	25.4	110	3.62
2-1/2"	41	28.6	120	5.28
3"	46	31.8	125	7.00
3-1/2"	49	35.0	140	8.84
4"	51	35.0	140	11.1
5"	54	38.1	145	13.9
6"	57	41.3	150	18.3
8"	68	47.7	170	28.6
10"	73	54.0	190	39.2
12"	79	57.2	205	57.0
14"	84	60.4	210	79.1
16"	94	63.5	220	101
18"	98	66.7	230	123
20"	102	69.9	240	146
22"	108	73.1	255	186.15
24"	114	76.2	265	219

*Y: length through hub; T: flange thickness; L: length of stud bolts for 7 mm raised face flange; The height of raised face t is 7 mm for all class 400 S/O flanges. Mass: approximate weights/ masses of the flange; All dimensions are in mm and the weights are in kg.

ASME B16.5 SO Flanges: Dimensions & Weights
Class150	Class300	Class400
Class600	Class900	Class1500

*Click to view the dimensions and weights of slip-on flanges of each pressure rating.