Metric Dimensions of Female Ring Joint Line Blanks as per ASME B16.48

Blinds, Spacers and Spectacle Blinds are used for the purpose of positive shut off of a piping system where mere shut off using valves is not sufficient as valves are prone to leakage. These are generally used in hazardous services like hydrocarbon fluids.

This page provides metric dimensions of Female Ring Joint Line Blanks as per ASME B16.48

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

150# FRJ Line Blanks

Female Ring Joint Line Blanks Dimensions Header

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width
1	34	64	80	19.1	51
1-1/4	42	73	90	19.1	51
1-1/2	48	83	100	19.1	57
2	61	102	120	19.1	57
2-1/2	73	121	140	22.4	57
3	89	133	150	22.4	57
3-1/2	102	154	175	22.4	64
4	114	172	190	22.4	64
5	141	194	215	25.4	70
6	168	219	240	25.4	83
8	219	273	300	28.4	95
10	273	330	360	31.8	102
12	324	406	430	35.1	121
14	356	426	475	35.1	127
16	406	483	540	38.1	127
18	457	546	580	41.1	127
20	508	597	635	41.1	127
24	610	711	750	47.8	152

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

300# FRJ Line Blanks

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width
1/2	21	51	65	15.7	38
3/4	27	64	80	19.1	45
1	34	70	90	19.1	51
1-1/4	42	79	100	22.4	51
1-1/2	48	90	115	22.4	57
2	61	108	125	25.4	57
2-1/2	73	127	150	28.4	57
3	89	146	170	28.4	57
3-1/2	102	159	185	28.4	64
4	114	175	200	31.8	64
5	141	210	235	35.1	70
6	168	241	270	35.1	83
8	219	302	330	41.1	95
10	273	356	385	44.5	102
12	324	413	450	50.8	121
14	356	457	515	53.8	127
16	406	508	570	57.2	127
18	457	575	630	60.5	127
20	508	635	685	69.9	127
24	610	749	810	79.2	152

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

400# FRJ Line Blanks

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

600# FRJ Line Blanks

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width
1/2	21	51	65	19.1	38
3/4	27	64	80	22.4	45
1	34	70	90	22.4	51
1-1/4	42	79	100	22.4	51
1-1/2	48	90	115	22.4	57
2	61	108	125	28.4	57
2-1/2	73	127	150	31.8	57
3	89	146	170	31.8	57
3-1/2	102	159	185	35.1	64
4	114	175	215	35.1	64
5	141	210	265	38.1	70
6	168	241	290	44.5	83
8	219	302	350	50.8	95
10	273	356	430	57.2	102
12	324	413	490	63.5	121
14	356	457	525	66.5	127
16	406	508	605	73.2	127
18	457	575	655	79.2	127
20	508	635	725	88.9	127
24	610	749	840	104.6	152

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

900# FRJ Line Blanks

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width
1/2	21	61	80	22.4	38
3/4	27	67	90	22.4	45
1	34	71	100	22.4	51
1-1/4	42	81	110	25.4	51
1-1/2	48	92	125	25.4	64
2	61	124	165	31.8	51
2-1/2	73	137	190	35.1	67
3	89	155	190	35.1	67
4	114	181	235	41.1	73
5	141	216	280	44.5	73
6	168	241	315	47.8	73
8	219	308	395	57.2	80
10	273	362	470	63.5	121
12	324	419	535	73.2	121
14	356	467	560	82.6	121
16	406	524	615	91.9	127
18	457	594	685	101.6	133
20	508	648	750	111.3	127
24	610	772	900	133.4	140

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

1500# FRJ Line Blanks

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width
1/2	21	61	80	22.4	38
3/4	27	67	90	25.4	45
1	34	71	100	25.4	54
1-1/4	42	81	110	25.4	54
1-1/2	48	92	125	28.4	57
2	61	124	165	35.1	54
2-1/2	73	137	190	38.1	57
3	89	168	205	44.5	73
4	114	194	240	47.8	76
5	141	229	290	53.8	76
6	168	248	315	60.5	79
8	219	318	395	73.2	86
10	273	371	480	82.5	133
12	324	438	570	101.6	133
14	356	489	635	111.3	140
16	406	546	705	124	146
18	457	613	775	133	152
20	508	673	830	142.7	165
24	610	794	990	168.1	178

150# | 300# | 400# | 600# | 900# | 1500# | 2500#

2500# FRJ Line Blanks

NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width
1/2	21	65	90	25.4	38
3/4	27	73	95	28.4	45
1	34	83	110	28.4	54
1-1/4	42	102	130	35.1	54
1-1/2	48	114	145	38.1	61
2	61	133	170	41.1	57
2-1/2	73	149	195	47.8	61
3	89	168	230	50.8	76
4	114	203	270	63.5	83
5	141	241	325	73.2	89
6	168	279	370	82.6	95
8	219	340	440	98.6	95
10	273	425	540	117.3	91
12	324	495	620	133.4	152
NPS	B Inside Diameter	O Outside Diameter	A Center to Center	t Blank Thickness	W Web Width

Source of Data

Dimensions of Line Blanks are as per ASME B16.48 : Line Blanks

Dimension Terms

A : Distance between Centerlines
B : Inside Diameter
O : Outside Diameter
t : Thickness of Blank
W : Web Width
Wt : Web Thickness : Note 2

GENERAL NOTE

(a). All dimensions are in millimeters.

NOTES

(1). Hole Size (where required due to bolt spacing) shall be the same as the flange bolt hole and located such that it will not interfere with bolting between two flanges.

(2). The thickness of the web (or tie bar) dimension, Wt shall be as determined by para.3.1 of ASME B16.48.

(3). Female ring-joint groove dimension shall be in accordance with ASME B16.5

(4). Oval ring-joint dimensions shall be in accordance with ASME B16.20, except Th = T + t where T is the ring height specified in ASME B16.20

General Notes

All Dimensions are in millimeters.

Notes

(1) Hole size (where required due to bolt spacing) shall be the same as the flange bolt hole and located such that it will not interfere with bolting between two flanges.
(2) Female ring-joint groove dimensions shall be in accordance with ASME B16.5.
(3) The thickness of the web (or tie bar) dimension, Wt, shall be as determined by para. 3.1. of ASME B16.48

The Piping Engineering World

Metric Dimensions of Female Ring Joint Line Blanks as per ASME B16.48

150# FRJ Line Blanks

300# FRJ Line Blanks

400# FRJ Line Blanks

600# FRJ Line Blanks

900# FRJ Line Blanks

1500# FRJ Line Blanks

2500# FRJ Line Blanks

Source of Data

Dimension Terms

GENERAL NOTE

NOTES

General Notes

Notes

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