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Reducing Flange Dimensions

ASME B16.5 Reducing Flanges Dimensions

Type Nominal Size Liner
Thickness
Ø A D
DN1 DN2
In. In. mm mm mm
1 3/4″ 1/2″ 5.0 98.5 30
1 1″ 1/2″ 5.0 108 30
1 1″ 3/4″ 5.0 108 30
1 1.1/2″ 1/2″ 5.0 127 30
1 1.1/2″ 3/4″ 5.0 127 30
1 1.1/2″ 1″ 5.0 127 30
3 2″ 1/2″ 5.0 152 30
2 2″ 3/4″ 5.0 152 30
2 2″ 1″ 5.0 152 30
1 2″ 1.1/2″ 5.0 152 30
3 3″ 3/4″ 5.0 190.5 35
3 3″ 1″ 5.0 190.5 35
2 3″ 1.1/2″ 5.0 190.5 35
1 3″ 2″ 5.0 190.5 35
3 4″ 3/4″ 5.0 228.6 35
3 4″ 1″ 5.0 228.6 35
3 4″ 1.1/2″ 5.0 228.6 35
3 4″ 2″ 5.0 228.6 35
2 4″ 3″ 5.0 228.6 35
3 6″ 3/4″ 5.0 280 40
3 6″ 1″ 5.0 280 40
3 6″ 1.1/2″ 5.0 280 40
3 6″ 2″ 5.0 280 40
3 6″ 3″ 5.0 280 40
2 6″ 4″ 5.0 280 40
3 8″ 1″ 5.0 343 35
3 8″ 1.1/2″ 5.0 343 35
3 8″ 2″ 5.0 343 40
3 8″ 3″ 5.0 343 40
3 8″ 4″ 5.0 343 40
2 8″ 6″ 5.0 343 40
3 10″ 1″ 2.5 406 35
3 10″ 1.1/2″ 2.5 406 35
3 10″ 2″ 2.5 406 35
3 10″ 3″ 2.5 406 35
3 10″ 4″ 2.5 406 35
3 10″ 6″ 2.5 406 35
2 10″ 8″ 3.5 406 35
3 12″ 1″ 3.5 483 35
3 12″ 1.1/2″ 3.5 483 35
3 12″ 2″ 3.5 483 35
3 12″ 3″ 3.5 483 35
3 12″ 4″ 3.5 483 35
3 12″ 6″ 3.5 483 35
3 12″ 8″ 3.5 483 35
2 12″ 10″ 3.5 483 35
1 14″ 12″ 3.5 533 40
3 16″ 12″ 3.5 597 40
2 16″ 14″ 3.5 597 35
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