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
427
3/4
x
3/4
x
1
428
1-1/4
x
1-1/4
x
1
429
1-1/4
x
1-1/4
x
3/4
430
1-1/4
x
1-1/4
x
1/2
431
1-1/4
x
1
x
1-1/4
432
1-1/4
x
1
x
1
433
1-1/4
x
1
x
3/4
434
1-1/4
x
1
x
1/2
435
1-1/4
x
3/4
x
1-1/4
436
1-1/4
x
3/4
x
1
437
1-1/4
x
3/4
x
3/4
438
1-1/4
x
1/2
x
1-1/4
439
1-1/4
x
1/2
x
1
440
1
x
1
x
1-1/4
441
1-1/2
x
1-1/2
x
1-1/4
442
1-1/2
x
1-1/2
x
1
443
1-1/2
x
1-1/2
x
3/4
444
1-1/2
x
1-1/2
x
1/2
445
1-1/2
x
1-1/4
x
1-1/2
446
1-1/2
x
1-1/4
x
1-1/4
447
1-1/2
x
1-1/4
x
1
448
1-1/2
x
1-1/4
x
3/4
449
1-1/2
x
1-1/4
x
1/2
450
1-1/2
x
1
x
1-1/2
451
1-1/2
x
1
x
1-1/4
452
1-1/2
x
1
x
1
453
1-1/2
x
3/4
x
1-1/2
454
1-1/2
x
3/4
x
1-1/4
455
1-1/2
x
1/2
x
1-1/2
456
1-1/4
x
1-1/4
x
1-1/2
457
1-1/4
x
1
x
1-1/2
458
1
x
1
x
1-1/2
459
2
x
2
x
1-1/2
460
2
x
2
x
1-1/4
461
2
x
2
x
1
462
2
x
2
x
3/4
463
2
x
2
x
1/2
464
2
x
1-1/2
x
2
465
2
x
1-1/2
x
1-1/2
466
2
x
1-1/2
x
1-1/4
467
2
x
1-1/2
x
1
468
2
x
1-1/2
x
3/4
469
2
x
1-1/2
x
1/2
470
2
x
1-1/4
x
2
3