icon

Flange Adapters

Standard Dimensions

2 1 3 2 1 Flange Adaptors Standard Dimensions Print
Size
(in.)
Outside
Diameter
(in.)
Inside
Diameter
(in.)
L
Length
(in.)
Tap Depth Weight
(lbs.)
C115
Flange
(in.)
B16.1
Class 250
Flange (in.)
4 10.00 4.00 2 3/4 7/8 37
6 12.50 6.00 1 Through Through 27
8 15.00 8.00 1 Through Through 36
10 17.50 10.00 2 1/2 7/8 1 115
12 20.50 12.00 2 1/2 7/8 1 1/8 154
14 23.00 14.00 2 1/2 1 1 1/8 186
16 25.50 16.00 2 3/4 1 1 1/4 242
18 28.00 18.00 2 Through Through 205
20 30.50 20.00 3 1 1/8 1 1/4 355
24 36.00 24.00 3 1/4 1 1/4 1 1/2 522
30 43.00 30.00 2 1/2 Through Through 529
36 50.00 36.00 4 1 1/2 2 1141
42 57.00 42.00 4 1 1/2 2 1408
48 65.00 48.00 3 Through Through 1285

Material is ASTM A36 steel.

Holes are drilled and tapped to mate with AWWA C110/C115 flanges on one side and ANSI/ASME B16.1 Class 250 flanges on the opposite, or other side.

Holes are equally spaced straddling centerline.

12”–30” flange adaptors and 36”–48” flange adaptors are tapped at top dead center for 5/8” and 3/4” (5/8–11 UNC and 3/4–10 UNC threaded) lifting eyes, respectively.