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
517
3
x
2-1/2
x
2-1/2
518
3
x
2-1/2
x
2
519
3
x
2-1/2
x
1-1/2
520
3
x
2-1/2
x
1-1/4
521
3
x
2-1/2
x
1
522
3
x
2-1/2
x
3
523
3
x
2
x
2-1/2
524
3
x
2
x
2
525
3
x
2
x
1-1/2
526
3
x
1-1/2
x
3
527
3
x
1-1/4
x
3
528
3
x
1
x
3
529
3
x
3/4
x
3
530
2-1/2
x
2-1/2
x
3
531
2-1/2
x
2
x
3
532
2
x
2
x
3
533
3-1/2
x
3-1/2
x
3
534
3-1/2
x
3-1/2
x
2-1/2
535
3-1/2
x
3-1/2
x
2
536
3-1/2
x
3-1/2
x
1-1/2
537
3-1/2
x
3-1/2
x
1-1/4
538
3-1/2
x
3-1/2
x
1
539
3-1/2
x
3
x
3
540
3-1/2
x
3
x
2-1/2
541
3-1/2
x
3
x
2
542
3-1/2
x
3
x
1-1/2
543
3-1/2
x
2-1/2
x
3-1/2
544
3-1/2
x
2-1/2
x
3
545
3-1/2
x
2-1/2
x
2-1/2
546
3-1/2
x
2
x
3-1/2
547
3-1/2
x
1-1/2
x
3-1/2
548
3-1/2
x
1-1/4
x
3-1/2
549
3-1/2
x
1
x
3-1/2
550
3
x
3
x
3-1/2
551
4
x
4
x
3-1/2
552
4
x
4
x
3
553
4
x
4
x
2-1/2
554
4
x
4
x
2
555
4
x
4
x
1-1/2
556
4
x
4
x
1-1/4
557
4
x
4
x
1
558
4
x
4
x
3/4
559
4
x
3-1/2
x
4
560
4
x
3-1/2
x
3-1/2
561
4
x
3-1/2
x
3
5