ASME B16.5 Slip On Flange Class 300

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 300LB 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	7/8	3/4
4"	200.0	8	7/8	3/4
5"	235.0	8	7/8	3/4
6"	269.9	12	7/8	3/4
8"	330.2	12	1	7/8
10"	387.4	16	1-1/8	1
12"	450.8	16	1-1/4	1-1/8
14"	514.4	20	1-1/4	1-1/8
16"	571.5	20	1-3/8	1-1/4
18"	628.6	24	1-3/8	1-1/4
20"	685.8	24	1-3/8	1-1/4
22"	743.0	24	1-5/8	1-1/2
24"	812.8	24	1-5/8	1-1/2

*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"	21	12.7	65	0.64
3/4"	24	14.3	75	1.12
1"	25	15.9	75	1.36
1-1/4"	25	17.5	85	1.68
1-1/2"	29	19.1	90	2.49
2"	32	22.3	90	2.87
2-1/2"	37	25.4	100	4.32
3"	41	28.6	110	5.85
3-1/2"	43	30.2	110	7.34
4"	46	31.8	115	9.61
5"	49	35.0	120	12.3
6"	51	36.6	120	15.6
8"	60	41.3	140	24.2
10"	65	47.7	160	34.1
12"	71	50.8	170	49.8
14"	75	54.0	180	69.9
16"	81	57.2	190	88.1
18"	87	60.4	195	109
20"	94	63.5	205	134
22"	100	66.7	230	170.85
24"	105	69.9	230	201

*Y: length through hub; T: flange thickness; L: length of stud bolts for 2 mm raised face flange; The height of raised face t is 2 mm for all Class 300 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.