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 provides 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 flanges shown are adequate for water service of 250 psi working pressure and should not be confused with class 250 flanges per ANSI B16.1. The bolt circle and the bolt holes match those of ANSI B16.1 class 125. If flanges are required to be made in accordance with other ratings or other standards, this must be specified on the purchase order. 24" and smaller flanges are rated equal to the fittings to which they are attached and are adequate for water service of greater than 350 psi only with the use of AMERICAN’s Toruseal gaskets.
We recommend that AMERICAN Toruseal gaskets be used for normal water service.
Facing: Flanges are plain faced and are finished smooth or with shallow serrations (AMERICAN’s option).
Back Facing: Flanges may be back faced or spot faced (AMERICAN’s option), for compliance with the flange thickness tolerance.
Drilling: Drilling of flanges can be rotated when required; for those sizes with an even number of bolt holes in each quadrant, the fitting can be rotated 45° with standard drilling.
Size | O.D. | B.C. | T | Bolt Hole | Bolts | |
|---|---|---|---|---|---|---|
No. Per | Size | |||||
3 | 7.50 | 6.00 | 0.75 | 3/4 | 4 | 5/8 × 2 1/2 |
4 | 9.00 | 7.50 | 0.94 | 3/4 | 8 | 5/8 × 3 |
6 | 11.00 | 9.50 | 1.00 | 7/8 | 8 | 3/4 × 3 1/2 |
8 | 13.50 | 11.75 | 1.12 | 7/8 | 8 | 3/4 × 3 1/2 |
10 | 16.00 | 14.25 | 1.19 | 1 | 12 | 7/8 × 4 |
12 | 19.00 | 17.00 | 1.25 | 1 | 12 | 7/8 × 4 |
14 | 21.00 | 18.75 | 1.38 | 1 1/8 | 12 | 1 × 4 1/2 |
16 | 23.50 | 21.25 | 1.44 | 1 1/8 | 16 | 1 × 4 1/2 |
18 | 25.00 | 22.75 | 1.56 | 1 1/4 | 16 | 1 1/8 × 5 |
20 | 27.50 | 25.00 | 1.69 | 1 1/4 | 20 | 1 1/8 × 5 |
24 | 32.00 | 29.50 | 1.88 | 1 3/8 | 20 | 1 1/4 × 5 1/2 |
30 | 38.75 | 36.00 | 2.12 | 1 3/8 | 28 | 1 1/4 × 6 1/2 |
36 | 46.00 | 42.75 | 2.38 | 1 5/8 | 32 | 1 1/2 × 7 |
42 | 53.00 | 49.50 | 2.62 | 1 5/8 | 36 | 1 1/2 × 7 1/2 |
48 | 59.50 | 56.00 | 2.75 | 1 5/8 | 44 | 1 1/2 × 8 |
54 | 66.25 | 62.75 | 3.00 | 2 | 44 | 1 3/4 × 8 1/2 |
60 | 73.00 | 69.25 | 3.12 | 2 | 52 | 1 3/4 × 9 |
641 | 80.00 | 76.00 | 3.38 | 2 | 52 | 1 3/4 × 9 |
1.) The dimensions of 64" flange correspond with applicable dimensions of 66" Class E in ANSI/AWWA C207, and 64" ductile iron flanges can be connected to those flanges.
See the table below for dimensions for the above fittings. Some of the above fittings are not listed in AWWA C110, but do meet applicable requirements of AWWA C110.
The largest opening establishes the basic size of a reducing fitting. The largest opening is named first, except for bull-head tees and for double-branch bends where both branches are reducing; in these two cases the largest opening is named last.
In the designation of the openings of reducing fittings, they should be read in the order indicated by the sequence of the numbers 1, 2, 3 and 4 as shown.
In describing tees reducing on the branch only, the first size applies to both outlets on the run. Similarly, for crosses with the same size for both run outlets and the same size for both branch outlets, it is necessary to indicate only two sizes. For example: for an 8 × 6 tee or wye – it is not necessary to show 8 × 8 × 6; for an 8 × 6 cross – it is not necessary to show 8 × 8 × 6 x 6.
Size | Dimensions2 in Inches | Reducing Tees | Reducing Wyes3 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D2 | E2 | F | R | S | T | U | Size of Branches and Smaller5 | H | J | Size of Branches and Smaller | M | N | P | |
3 | 5.5 | 7.75 | 3.0 | 10.0 | 3.0 | 6 | 4.88 | 5.00 | 0.56 | 0.50 | - | see6 | see6 | - | see7 | see7 | see7 |
4 | 6.5 | 9.00 | 4.0 | 12.0 | 3.0 | 7 | 5.50 | 6.00 | 0.62 | 0.50 | - | see6 | see6 | - | see7 | see7 | see7 |
6 | 8.0 | 11.50 | 5.0 | 14.5 | 3.5 | 9 | 7.00 | 7.00 | 0.69 | 0.62 | - | see6 | see6 | - | see7 | see7 | see7 |
8 | 9.0 | 14.00 | 5.5 | 17.5 | 4.5 | 11 | 8.38 | 9.00 | 0.94 | 0.88 | - | see6 | see6 | - | see7 | see7 | see7 |
10 | 11.0 | 16.50 | 6.5 | 20.5 | 5.0 | 12 | 9.75 | 9.00 | 0.94 | 0.88 | - | see6 | see6 | - | see7 | see7 | see7 |
12 | 12.0 | 19.00 | 7.5 | 24.5 | 5.5 | 14 | 11.25 | 11.00 | 1.00 | 1.00 | - | see6 | see6 | - | see7 | see7 | see7 |
14 | 14.0 | 21.50 | 7.5 | 27.0 | 6.0 | 16 | 12.50 | 11.00 | 1.00 | 1.00 | - | see6 | see6 | - | see7 | see7 | see7 |
16 | 15.0 | 24.00 | 8.0 | 30.0 | 6.5 | 18 | 13.75 | 11.00 | 1.00 | 1.00 | - | see6 | see6 | - | see7 | see7 | see7 |
18 | 16.5 | 26.50 | 8.5 | 32.0 | 7.0 | 19 | 15.00 | 13.50 | 1.12 | 1.12 | 12 | 13 | 15.5 | 8 | 25.0 | 1.00 | 27.5 |
20 | 18.0 | 29.00 | 9.5 | 35.0 | 8.0 | 20 | 16.00 | 13.50 | 1.12 | 1.12 | 14 | 14 | 17.0 | 10 | 27.0 | 1.00 | 29.5 |
24 | 22.0 | 34.00 | 11.0 | 40.5 | 9.0 | 24 | 18.50 | 13.50 | 1.12 | 1.12 | 16 | 15 | 19.0 | 12 | 40.5 | 9.0 | 40.5 |
30 | 25.0 | 41.50 | 15.0 | see4 | see4 | 30 | 23.00 | 16.00 | 1.19 | 1.15 | 20 | 18 | 23.0 | - | see4 | see4 | see4 |
36 | 28.0 | 49.00 | 18.0 | see4 | see4 | 36 | 26.00 | 19.00 | 1.25 | 1.15 | 24 | 20 | 26.0 | - | see4 | see4 | see4 |
42 | 31.0 | 56.50 | 21.0 | see4 | see4 | 42 | 30.00 | 23.50 | 1.44 | 1.28 | 24 | 23 | 30.0 | - | see4 | see4 | see4 |
48 | 34.0 | 64.00 | 24.0 | see4 | see4 | 48 | 34.00 | 25.00 | 1.56 | 1.42 | 30 | 26 | 34.0 | - | see4 | see4 | see4 |
54 | 39.0 | - | 20.5 | - | - | see8 | 38.00 | 27.50 | 1.69 | 1.55 | see9 | see9 | see9 | - | - | - | - |
60 | 43.0 | - | 23.5 | - | - | see8 | 42.00 | 32.00 | 1.88 | 1.75 | see9 | see9 | see9 | - | - | - | - |
64 | 48.0 | - | 25.0 | - | - | see8 | 44.00 | 38.75 | 2.12 | 1.75 | see9 | see9 | see9 | - | - | - | - |
2.) See flanged 90° bends for “K” dimensions.
3.) AWWA C110 and C153 do not include data on wyes of any size.
4.) Wyes are special. Substituting a pipe with a lateral welded-on outlet may be more economical and offer quicker shipment. A tee with a 45° bend may also offer quicker shipment.
5.) For larger branches, use “A” dimensions.
6.) For these smaller-diameter reducing tees and crosses, the “A” dimension applies as shown in “cut” of standard tee and cross.
7.) For these smaller-diameter reducing wyes, the “D” and “E” dimensions apply as shown in “cut” of standard wye.
8.) “F” dimensions for 54"-64" reducers vary with diameters of reduction.
9.) “H” and “J” dimensions for 54"-64" tees and crosses vary with diameters of reduction.
Taps are made directly into the wall of the flanged fitting. However, if the wall thickness is insufficient for the required size and angle of tap, a tapping boss is provided on the fitting.
Positions “G” and “M” are approximately in the center of the fitting. All other tap locations vary with size and foundry practice. Exact tap locations cannot usually be provided.
In the designation of the openings of reducing fittings, they should be read in the order indicated by the sequence of the numbers 1, 2, 3 and 4 as shown. Maximum tap diameter depends on the fitting wall thickness.
