MIL-DTL-52618/4E
TABLE I. Size code number for reducing tees - Continued.
Nominal pipe size
(inch) x (inch) x (branch inch)
Size code
number
Port
Port
Port
1
2
3
471
2
x
1-1/4
x
1-1/2
472
2
x
1-1/4
x
1-1/4
473
2
x
1-1/4
x
1
474
2
x
1
x
2
475
2
x
1
x
1-1/2
476
2
x
1
x
1-1/4
477
2
x
3/4
x
2
478
2
x
1/2
x
2
479
1-1/2
x
1
x
2
480
1-1/4
x
1-1/4
x
2
481
1-1/2
x
1-1/2
x
2
482
1-1/2
x
1-1/4
x
2
483
2-1/2
x
2-1/2
x
2
484
2-1/2
x
2-1/2
x
1-1/2
485
2-1/2
x
2-1/2
x
1-1/4
486
2-1/2
x
2-1/2
x
1
487
2-1/2
x
2-1/2
x
3/4
488
2-1/2
x
2-1/2
x
1/2
489
2-1/2
x
2
x
2-1/2
490
2-1/2
x
2
x
2
491
2-1/2
x
2
x
1-1/2
492
2-1/2
x
2
x
1-1/4
493
2-1/2
x
2
x
1
494
2-1/2
x
2
x
3/4
495
2-1/2
x
2
x
1/2
496
2-1/2
x
1-1/2
x
2-1/2
497
2-1/2
x
1-1/2
x
2
498
2-1/2
x
1-1/2
x
1-1/2
499
2-1/2
x
1-1/4
x
2-1/2
500
2-1/2
x
1-1/4
x
2
501
2-1/2
x
1
x
2-1/2
502
2-1/2
x
1
x
2
503
2-1/2
x
3/4
x
2-1/2
504
2-1/2
x
1/2
x
2-1/2
505
2
x
2
x
2-1/2
506
2
x
1-1/2
x
2-1/2
507
2
x
1-1/4
x
2-1/2
508
1-1/2
x
1-1/2
x
2-1/2
509
3
x
3
x
2-1/2
510
3
x
3
x
2
511
3
x
3
x
1-1/2
512
3
x
3
x
1-1/4
514
3
x
3
x
3/4
515
3
x
3
x
1/2
516
3
x
2-1/2
x
3
4