Class 150 Flange Dimensions

Class 150 flange dimentions and bolt circles are as per ASME/ANSI B16.5 or ASME/ANSI 16.47. The dimensions are for end connection of class 150 ball valve and other steel valves.

ANSI Class 150 flange dimensions

ANSI Class 150 Flange Dimensions (RF Ends)

SlZE		O		R		C		T		h		Bolt
inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	QTY.	Diameter
2	50	6.00	152	3.62	92	0.62	16	4.75	120.5	0.75	19	4	5/8
2 1/2	65	7.00	178	4.12	105	0.69	18	5.50	139.5	0.75	19	4	5/8
3	80	7.50	190	5.00	127	0.75	19	6.00	152.5	0.75	19	4	5/8
4	100	9.00	229	6.19	157	0.94	24	7.50	190.5	0.75	19	8	5/8
6	150	11.00	279	8.50	216	1.00	26	9.50	241.5	0.88	22	8	3/4
8	200	13.50	343	10.62	270	1.12	29	11.75	298.5	0.88	22	8	3/4
10	250	16.00	406	12.75	324	1.19	31	14.25	362	1.00	25	12	7/8
12	300	19.00	483	15.00	381	1.25	32	17.00	432	1.00	25	12	7/8
14	350	21.00	533	16.25	413	1.38	35	18.75	476	1.12	29	12	1
16	400	23.50	597	18.50	470	1.44	37	21.25	540	1.12	29	16	1
18	450	25.00	635	21.00	533	1.56	40	22.75	578	1.25	32	16	1 1/8
20	500	27.50	699	23.00	584	1.69	43	25.00	635	1.25	32	20	1 1/8
24	600	32.00	813	27.25	692	1.88	48	29.50	749.5	1.38	35	20	1 1/4
26	650	34.25	870	29.50	749	2.69	69	31.75	806.5	1.38	35	24	1 1/4
28	700	36.50	927	31.50	800	2.81	72	34.00	863.5	1.38	35	28	1 1/4
30	750	38.75	984	33.75	857	2.94	75	36.00	914.5	1.38	35	28	1 1/4
32	800	41.75	1060	36.00	914	3.19	81	38.50	978	1.62	41	28	1 1/2
36	900	46.00	1168	40.25	1022	3.56	91	42.75	1086	1.62	41	32	1 1/2
40	1000	50.75	1289	44.25	1124	3.56	91	47.25	1200	1.62	41	36	1 1/2
42	1050	53.00	1346	47.00	1194	3.81	97	49.50	1257.5	1.62	41	36	1 1/2
48	1200	59.50	1511	53.50	1359	4.25	108	56.00	1422.5	1.62	41	44	1 1/2

ANSI Class 150 flange dimensions (RTJ)

ANSI Class 150 Flange Dimensions (RTJ Ends)

SIZE		Ring No.	P		E		F		R		K
inch	mm	inch	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm
2	50	R22	3.250	82.55	0.250	6.35	0.344	8.74	0.03	0.8	4.00	102
2 1/2	65	R25	4.000	101.60	0.250	6.35	0.344	8.74	0.03	0.8	4.75	121
3	80	R29	4.500	114.30	0.250	6.35	0.344	8.74	0.03	0.8	5.25	133
4	100	R36	5.875	149.22	0.250	6.35	0.344	8.74	0.03	0.8	6.75	171
6	150	R43	7.625	193.68	0.250	6.35	0.344	8.74	0.03	0.8	8.62	219
8	200	R48	9.750	247.65	0.250	6.35	0.344	8.74	0.03	0.8	10.75	273
10	250	R52	12.000	304.80	0.250	6.35	0.344	8.74	0.03	0.8	13.00	330
12	300	R56	15.000	381.00	0.250	6.35	0.344	8.74	0.03	0.8	16.00	406
14	350	R59	15.625	396.88	0.250	6.35	0.344	8.74	0.03	0.8	16.75	425
16	400	R64	17.875	454.02	0.250	6.35	0.344	8.74	0.03	0.8	19.00	483
18	450	R68	20.375	517.52	0.250	6.35	0.344	8.74	0.03	0.8	21.50	546
20	500	R72	22.000	558.80	0.250	6.35	0.344	8.74	0.03	0.8	23.50	597
24	600	R76	26.500	673.10	0.250	6.35	0.344	8.74	0.03	0.8	28.00	711