AMERICAN provides a complete line of standard as well as many special flanged fittings for various types of service, including water, sewage and air.
Most of the flanged fittings furnished by AMERICAN are manufactured in accordance with the requirements of this standard. Such fittings in this section are designated with the heading “ANSI/AWWA C110/A21.10.” The AWWA C110 fitting flanges have facing and drilling that match AWWA C115 threaded-on flanges (see Flanged Joint Pipe) and which also match ANSI B16.1 class 125 flanges.
AMERICAN manufactures some fittings that are not included in AWWA C110, including long-radius 90° bends, reducing bends, wyes and various other fittings commonly used in plant piping. These have AWWA C110 flanges and are denoted by the heading “AMERICAN Standard.” Pressure ratings shown are AMERICAN Standard and are based on AWWA C110 design principles.
AWWA C110 flanges are adequate for a water working pressure of 250 psi with the body of the fitting being suitable for 150 or 250 psi as indicated. In some cases, these fittings have been supplied for greater water working pressure applications, particularly when used with AMERICAN Toruseal gaskets.
54", 60" and 64" fittings are manufactured in accordance with AWWA C153. Flanges match AWWA C115 and ANSI B16.1 (class 125) flanges and are adequate for a water working pressure of 250 psi. (64" flanges match 66" flanges. See the table in Standard Dimensions). The bodies of these fittings are suitable for 150 psi or 250 psi as indicated. In some cases, these fittings have been supplied for greater water working pressure applications, particularly when used with AMERICAN Toruseal gaskets.
Except for a transition fabricated pipe from an ANSI B16.1 class 250 flange to a standard AWWA C110 flange, AMERICAN no longer furnishes fittings with flanges faced and drilled per ANSI B16.1 class 250.
As noted in AWWA C111, flange joints in the 24" and smaller sizes may be rated for up to 350 psi with the use of special gaskets such as AMERICAN’s Toruseal gasket.
Furthermore, AMERICAN is able to rate flange pipe and fittings higher than 350 psi on special applications.
Information on fittings class 250 F&D previously furnished by AMERICAN can be found in the Guide to Historical Data.
The dimensions and weights of concentric and eccentric reducers are normally the same. If the order does not specify an eccentric reducer, then a concentric reducer will be furnished. Eccentric reducers are available in most of the sizes listed.
Numerals on cuts indicate standard order of specifying size of fitting.
Size | Pressure | Dimensions in Inches | Weight | |||
|---|---|---|---|---|---|---|
Large | Small | T | T 1 | F | ||
6 | 4 | 250 | 0.55 | 0.52 | 9 | 45 |
8 | 4 | 250 | 0.6 | 0.52 | 11 | 65 |
8 | 6 | 250 | 0.6 | 0.55 | 11 | 75 |
10 | 4 | 250 | 0.68 | 0.52 | 12 | 85 |
10 | 6 | 250 | 0.68 | 0.55 | 12 | 95 |
10 | 8 | 250 | 0.68 | 0.6 | 12 | 110 |
12 | 4 | 250 | 0.75 | 0.52 | 14 | 120 |
12 | 6 | 250 | 0.75 | 0.55 | 14 | 130 |
12 | 8 | 250 | 0.75 | 0.6 | 14 | 145 |
12 | 10 | 250 | 0.75 | 0.68 | 14 | 165 |
14 | 6 | 250 | 0.66 | 0.55 | 16 | 155 |
14 | 8 | 250 | 0.66 | 0.6 | 16 | 170 |
14 | 10 | 250 | 0.66 | 0.68 | 16 | 195 |
14 | 12 | 250 | 0.66 | 0.75 | 16 | 225 |
16 | 6 | 250 | 0.7 | 0.55 | 18 | 190 |
16 | 8 | 250 | 0.7 | 0.6 | 18 | 210 |
16 | 10 | 250 | 0.7 | 0.68 | 18 | 235 |
16 | 12 | 250 | 0.7 | 0.75 | 18 | 265 |
16 | 14 | 250 | 0.7 | 0.66 | 18 | 280 |
18 | 6 | 250 | 0.75 | 0.55 | 19 | 220 |
18 | 8 | 250 | 0.75 | 0.6 | 19 | 240 |
18 | 10 | 250 | 0.75 | 0.68 | 19 | 265 |
18 | 12 | 250 | 0.75 | 0.75 | 19 | 295 |
18 | 14 | 250 | 0.75 | 0.66 | 19 | 305 |
18 | 16 | 250 | 0.75 | 0.7 | 19 | 335 |
20 | 6 | 250 | 0.8 | 0.55 | 20 | 265 |
20 | 8 | 250 | 0.8 | 0.6 | 20 | 285 |
20 | 10 | 250 | 0.8 | 0.68 | 20 | 310 |
20 | 12 | 250 | 0.8 | 0.75 | 20 | 345 |
20 | 14 | 250 | 0.8 | 0.66 | 20 | 355 |
20 | 16 | 250 | 0.8 | 0.7 | 20 | 385 |
20 | 18 | 250 | 0.8 | 0.75 | 20 | 410 |
24 | 8 | 250 | 0.89 | 0.6 | 24 | 410 |
24 | 10 | 250 | 0.89 | 0.68 | 24 | 440 |
24 | 12 | 250 | 0.89 | 0.75 | 24 | 480 |
24 | 14 | 250 | 0.89 | 0.66 | 24 | 490 |
24 | 16 | 250 | 0.89 | 0.7 | 24 | 525 |
24 | 18 | 250 | 0.89 | 0.75 | 24 | 550 |
24 | 20 | 250 | 0.89 | 0.8 | 24 | 595 |
30 | 12 | 250 | 1.03 | 0.75 | 30 | 730 |
30 | 16 | 250 | 1.03 | 0.66 | 30 | 735 |
30 | 18 | 250 | 1.03 | 0.75 | 30 | 815 |
30 | 20 | 250 | 1.03 | 0.8 | 30 | 865 |
30 | 24 | 250 | 1.03 | 0.89 | 30 | 965 |
36 | 16 | 250 | 1.15 | 0.7 | 36 | 1115 |
36 | 18 | 250 | 1.15 | 0.75 | 36 | 1160 |
36 | 20 | 250 | 1.15 | 0.8 | 36 | 1225 |
36 | 24 | 250 | 1.15 | 0.89 | 36 | 1340 |
36 | 30 | 250 | 1.15 | 1.03 | 36 | 1550 |
42 | 24 | 250 | 1.28 | 0.89 | 42 | 1810 |
42 | 30 | 250 | 1.28 | 1.03 | 42 | 2060 |
42 | 36 | 250 | 1.28 | 1.15 | 42 | 2345 |
48 | 30 | 250 | 1.42 | 1.03 | 48 | 2615 |
48 | 36 | 250 | 1.42 | 1.15 | 48 | 2940 |
48 | 42 | 250 | 1.42 | 1.28 | 48 | 3320 |
54 | 42 | 2502 | 0.9 | 1.25 | 25 | 2025 |
54 | 48 | 2502 | 0.9 | 1.4 | 18 | 1915 |
60 | 48 | 2502 | 0.94 | 1.4 | 20 | 2360 |
60 | 54 | 2502 | 0.94 | 0.9 | 15 | 2055 |
64 | 54 | 2502 | 0.99 | 0.9 | 18 | 2695 |
64 | 60 | 2502 | 0.99 | 0.94 | 17 | 2980 |
1.) AMERICAN standard (54"-64" fittings are rated for only 150 psi in AWWA C153.)
2.) Eccentric reducers are not available 54" and larger.
The two flanges on most reducers have a different number of bolt holes, and all adjacent bolt holes do not straddle a centerline common to both flanges.
The centerline of the reducer is marked by notches on the circumference of each flange, and installation must be made in reference to this centerline. This would also be applicable with most reducing flanges and reducing flange fillers. Failure to assemble with the centerline at 12 o’clock will result in downstream equipment or bends not bolting correctly.
