Dimensions Butt Weld Reducing Tees ASME B16.9

OTHER DIAMETERS

1/2 - 4

5 - 16

18 - 26

28 - 32

34 - 38

40 - 42

44 - 48

NPS	O.D. D	O.D. D1	Center to End C	Center to End M
18 - 8	457	219.1	343	298
18 - 10	457	273	343	308
18 - 12	457	323.8	343	321
18 - 14	457	355.6	343	330
18 - 16	457	406.4	343	330
20 - 8	508	219.1	381	324
20 - 10	508	273	381	333
20 - 12	508	323.8	381	346
20 - 14	508	355.6	381	356
20 - 16	508	406.4	381	356
20 - 18	508	457	381	368
22 - 10	559	273	419	359
22 - 12	559	323.8	419	371
22 - 14	559	355.6	419	381
22 - 16	559	406.4	419	381
22 - 18	559	457	419	394
22 - 20	559	508	419	406
24 - 10	610	273	432	384
24 - 12	610	323.8	432	397
24 - 14	610	355.6	432	406
24 - 16	610	406.4	432	406
24 - 18	610	457	432	419
24 - 20	610	508	432	432
24 - 22	610	559	432	432
26 - 12	660	323.8	495	422
26 - 14	660	355.6	495	432
26 - 16	660	406.4	495	432
26 - 18	660	457	495	444
26 - 20	660	508	495	457
26 - 22	660	559	495	470
26 - 24	660	610	495	483

Dimensions are in millimeters unless otherwise indicated.
Wall thickness (t) must be specified by customer.

Dimensional Tolerances Reducing Tees ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8	10 to 18	20 to 24	26 to 30	32 to 48
Outside Dia at Bevel (D)	+1.6 -0.8	1.6	1.6	+2.4 -1.6	+4 -3.2	+6.4 -4.8	+6.4 -4.8	+6.4 -4.8
Inside Dia at End	0.8	1.6	1.6	1.6	3.2	4.8	+6.4 -4.8	+6.4 -4.8
Center to End (C / M)	2	2	2	2	2	2	3	5
Wall Thk (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.

Note..
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 - NPS 24. Except with regard to the outside diameter at the bevel.

Other Dimensions Butt Weld Tees

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