Home - www.wermac.orgsearch wermac.org
www.wermac.org
Fitting Guide

Dimensions Butt Welded Reducing Tees ASME B16.9 NPS 1/2 to 48

Reducing Tee ASME b16.9

Other Diameters

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.

Reducing Tee ASME b16.9

Dimensional Tolerances Reducing Tees ASME B16.9

Nominal Pipe Size

1/2 to 2½

3 to 3½

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.

PP
Close

^