Butt Weld Reducing Tees And Crosses Inch Dimensions as per ASME B16.9

Reducing tees and crosses are used for branch connection of smaller size than that of a header. ASME B16.9 Table 8 provides dimensions for size range ½” by ¼” to 48 by 30”. As straight crosses, reducing crosses are also used sparingly to reduce size of inventory. In place of a cross, two reducing tees are normally used. Such crosses are used only when there is a space constraint such as in marine applications or revamp work. This page provides inch dimensions for Reducing Tees and Crosses.

Available Dimensions are : OD1 | Outside Diameter at Bevel for Run Pipe, OD2 | Outside Diameter at Bevel for Branch Pipe, C | Center to End Dimension for Run Pipe, M | Center to End Dimension for Branch Pipe.

Metric

Inch

NPS1	NPS2	OD1	OD2	C	M
1/2	3/8	0.84	0.68	1.00	1.00
1/2	1/4	0.84	0.54	1.00	1.00
3/4	1/2	1.05	0.84	1.12	1.12
3/4	3/8	1.05	0.68	1.12	1.12
1	3/4	1.32	1.05	1.50	1.50
1	1/2	1.32	0.84	1.50	1.50
1-1/4	1	1.66	1.32	1.88	1.88
1-1/4	3/4	1.66	1.05	1.88	1.88
1-1/4	1/2	1.66	0.84	1.88	1.88
1-1/2	1-1/4	1.90	1.66	2.25	2.25
1-1/2	1	1.90	1.32	2.25	2.25
1-1/2	3/4	1.90	1.05	2.25	2.25
1-1/2	1/2	1.90	0.84	2.25	2.25
2	1-1/2	2.38	1.90	2.50	2.38
2	1-1/4	2.38	1.66	2.50	2.25

NPS1	NPS2	OD1	OD2	C	M
2	1	2.38	1.32	2.50	2.00
2	3/4	2.38	1.05	2.50	1.75
2-1/2	2	2.88	2.38	3.00	2.75
2-1/2	1-1/2	2.88	1.90	3.00	2.62
2-1/2	1-1/4	2.88	1.66	3.00	2.50
2-1/2	1	2.88	1.32	3.00	2.25
3	2-1/2	3.50	2.88	3.38	3.25
3	2	3.50	2.38	3.38	3.00
3	1-1/2	3.50	1.90	3.38	2.88
3	1-1/4	3.50	1.66	3.38	2.75
3-1/2	3	4.00	3.50	3.75	3.62
3-1/2	2-1/2	4.00	2.88	3.75	3.50
3-1/2	2	4.00	2.38	3.75	3.25
3-1/2	1-1/2	4.00	1.90	3.75	3.12
4	3-1/2	4.50	4.00	4.12	4.00

NPS1	NPS2	OD1	OD2	C	M
4	3	4.50	3.50	4.12	3.88
4	2-1/2	4.50	2.88	4.12	3.75
4	2	4.50	2.38	4.12	3.50
4	1-1/2	4.50	1.90	4.12	3.38
5	4	5.56	4.50	4.88	4.62
5	3-1/2	5.56	4.00	4.88	4.50
5	3	5.56	3.50	4.88	4.38
5	2-1/2	5.56	2.88	4.88	4.25
5	2	5.56	2.38	4.88	4.12
6	5	6.62	5.56	5.62	5.38
6	4	6.62	4.50	5.62	5.12
6	3-1/2	6.62	4.00	5.62	5.00
6	3	6.62	3.50	5.62	4.88
6	2-1/2	6.62	2.88	5.62	4.75
8	6	8.62	6.62	7.00	6.62

NPS1	NPS2	OD1	OD2	C	M
8	5	8.62	5.56	7.00	6.38
8	4	8.62	4.50	7.00	6.12
8	3-1/2	8.62	4.00	7.00	6.00
10	8	10.75	8.62	8.50	8.00
10	6	10.75	6.62	8.50	7.62
10	5	10.75	5.56	8.50	7.50
10	4	10.75	4.50	8.50	7.25
12	10	12.75	10.75	10.00	9.50
12	8	12.75	8.62	10.00	9.00
12	6	12.75	6.62	10.00	8.62
12	5	12.75	5.56	10.00	8.50
14	12	14.00	12.75	11.00	10.62
14	10	14.00	10.75	11.00	10.12
14	8	14.00	8.62	11.00	9.75
14	6	14.00	6.62	11.00	9.38

NPS1	NPS2	OD1	OD2	C	M
16	14	16.00	14.00	12.00	12.00
16	12	16.00	12.75	12.00	11.62
16	10	16.00	10.75	12.00	11.12
16	8	16.00	8.62	12.00	10.75
16	6	16.00	6.62	12.00	10.38
18	16	18.00	16.00	13.50	13.00
18	14	18.00	14.00	13.50	13.00
18	12	18.00	12.75	13.50	12.62
18	10	18.00	10.75	13.50	12.12
18	8	18.00	8.62	13.50	11.75
20	18	20.00	18.00	15.00	14.50
20	16	20.00	16.00	15.00	14.00
20	14	20.00	14.00	15.00	14.00
20	12	20.00	12.75	15.00	13.62
20	10	20.00	10.75	15.00	13.12

NPS1	NPS2	OD1	OD2	C	M
20	8	20.00	8.62	15.00	12.75
22	20	22.00	20.00	16.50	16.00
22	18	22.00	18.00	16.50	15.50
22	16	22.00	16.00	16.50	15.00
22	14	22.00	14.00	16.50	15.00
22	12	22.00	12.75	16.50	14.62
22	10	22.00	10.75	16.50	14.12
24	22	24.00	22.00	17.00	17.00
24	20	24.00	20.00	17.00	17.00
24	18	24.00	18.00	17.00	16.50
24	16	24.00	16.00	17.00	16.00
24	14	24.00	14.00	17.00	16.00
24	12	24.00	12.75	17.00	15.62
24	10	24.00	10.75	17.00	15.12
26	24	26.00	24.00	19.50	19.00

NPS1	NPS2	OD1	OD2	C	M
26	22	26.00	22.00	19.50	18.50
26	20	26.00	20.00	19.50	18.00
26	18	26.00	18.00	19.50	17.50
26	16	26.00	16.00	19.50	17.00
26	14	26.00	14.00	19.50	17.00
26	12	26.00	12.75	19.50	16.62
28	26	28.00	26.00	20.50	20.50
28	24	28.00	24.00	20.50	20.00
28	22	28.00	22.00	20.50	19.50
28	20	28.00	20.00	20.50	19.00
28	18	28.00	18.00	20.50	18.50
28	16	28.00	16.00	20.50	18.00
28	14	28.00	14.00	20.50	18.00
28	12	28.00	12.75	20.50	17.62
30	28	30.00	28.00	22.00	21.50

NPS1	NPS2	OD1	OD2	C	M
30	26	30.00	26.00	22.00	21.50
30	24	30.00	24.00	22.00	21.00
30	22	30.00	22.00	22.00	20.50
30	20	30.00	20.00	22.00	20.00
30	18	30.00	18.00	22.00	19.50
30	16	30.00	16.00	22.00	19.00
30	14	30.00	14.00	22.00	19.00
30	12	30.00	12.75	22.00	18.62
30	10	30.00	10.75	22.00	18.12
32	30	32.00	30.00	23.50	23.00
32	28	32.00	28.00	23.50	22.50
32	26	32.00	26.00	23.50	22.50
32	24	32.00	24.00	23.50	22.00
32	22	32.00	22.00	23.50	21.50
32	20	32.00	20.00	23.50	21.00

NPS1	NPS2	OD1	OD2	C	M
32	18	32.00	18.00	23.50	20.50
32	16	32.00	16.00	23.50	20.00
32	14	32.00	14.00	23.50	20.00
34	32	34.00	32.00	25.00	24.50
34	30	34.00	30.00	25.00	24.00
34	28	34.00	28.00	25.00	23.50
34	26	34.00	26.00	25.00	23.50
34	24	34.00	24.00	25.00	23.00
34	22	34.00	22.00	25.00	22.50
34	20	34.00	20.00	25.00	22.00
34	18	34.00	18.00	25.00	21.50
34	16	34.00	16.00	25.00	21.00
36	34	36.00	34.00	26.50	26.00
36	32	36.00	32.00	26.50	25.50
36	30	36.00	30.00	26.50	25.00

NPS1	NPS2	OD1	OD2	C	M
36	28	36.00	28.00	26.50	24.50
36	26	36.00	26.00	26.50	24.50
36	24	36.00	24.00	26.50	24.00
36	22	36.00	22.00	26.50	23.50
36	20	36.00	20.00	26.50	23.00
36	18	36.00	18.00	26.50	22.50
36	16	36.00	16.00	26.50	22.00
38	36	38.00	36.00	28.00	28.00
38	34	38.00	34.00	28.00	27.50
38	32	38.00	32.00	28.00	27.00
38	30	38.00	30.00	28.00	26.50
38	28	38.00	28.00	28.00	25.50
38	26	38.00	26.00	28.00	25.50
38	24	38.00	24.00	28.00	25.00
38	22	38.00	22.00	28.00	24.50

NPS1	NPS2	OD1	OD2	C	M
38	20	38.00	20.00	28.00	24.00
38	18	38.00	18.00	28.00	23.50
40	38	40.00	38.00	29.50	29.50
40	36	40.00	36.00	29.50	29.00
40	34	40.00	34.00	29.50	28.50
40	32	40.00	32.00	29.50	28.00
40	30	40.00	30.00	29.50	27.50
40	28	40.00	28.00	29.50	26.50
40	26	40.00	26.00	29.50	26.50
40	24	40.00	24.00	29.50	26.00
40	22	40.00	22.00	29.50	25.50
40	20	40.00	20.00	29.50	25.00
40	18	40.00	18.00	29.50	24.50
42	40	42.00	40.00	30.00	28.00
42	38	42.00	38.00	30.00	28.00

NPS1	NPS2	OD1	OD2	C	M
42	36	42.00	36.00	30.00	28.00
42	34	42.00	34.00	30.00	28.00
42	32	42.00	32.00	30.00	28.00
42	30	42.00	30.00	30.00	28.00
42	28	42.00	28.00	30.00	27.50
42	26	42.00	26.00	30.00	27.50
42	24	42.00	24.00	30.00	26.00
42	22	42.00	22.00	30.00	26.00
42	20	42.00	20.00	30.00	26.00
42	18	42.00	18.00	30.00	25.50
42	16	42.00	16.00	30.00	25.00
44	42	44.00	42.00	32.00	30.00
44	40	44.00	40.00	32.00	29.50
44	38	44.00	38.00	32.00	29.00
44	36	44.00	36.00	32.00	28.50

NPS1	NPS2	OD1	OD2	C	M
44	34	44.00	34.00	32.00	28.50
44	32	44.00	32.00	32.00	28.00
44	30	44.00	30.00	32.00	28.00
44	28	44.00	28.00	32.00	27.50
44	26	44.00	26.00	32.00	27.50
44	24	44.00	24.00	32.00	27.50
44	22	44.00	22.00	32.00	27.00
44	20	44.00	20.00	32.00	27.00
46	44	46.00	44.00	33.50	31.50
46	42	46.00	42.00	33.50	31.00
46	40	46.00	40.00	33.50	30.50
46	38	46.00	38.00	33.50	30.00
46	36	46.00	36.00	33.50	30.00
46	34	46.00	34.00	33.50	29.50
46	32	46.00	32.00	33.50	29.50

NPS1	NPS2	OD1	OD2	C	M
46	30	46.00	30.00	33.50	29.00
46	28	46.00	28.00	33.50	29.00
46	26	46.00	26.00	33.50	29.00
46	24	46.00	24.00	33.50	28.50
46	22	46.00	22.00	33.50	28.50
48	46	48.00	46.00	35.00	33.00
48	44	48.00	44.00	35.00	33.00
48	42	48.00	42.00	35.00	32.00
48	40	48.00	40.00	35.00	32.00
48	38	48.00	38.00	35.00	32.00
48	36	48.00	36.00	35.00	31.00
48	34	48.00	34.00	35.00	31.00
48	32	48.00	32.00	35.00	31.00
48	30	48.00	30.00	35.00	30.00
48	28	48.00	28.00	35.00	30.00

NPS1	NPS2	OD1	OD2	C	M
48	26	48.00	26.00	35.00	30.00
48	24	48.00	24.00	35.00	29.00
48	22	48.00	22.00	35.00	29.00

Metric

Inch

GENERAL NOTE:

All dimensions are in inches.

NOTE:

(1) Outlet dimension M for run sizes NPS 14 and larger is recommended but not required.

The Piping Engineering World

Butt Weld Reducing Tees And Crosses Inch Dimensions as per ASME B16.9

GENERAL NOTE:

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