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Fittings

Flanged Fittings

AMERICAN provides a complete line of standard as well as many special flanged fittings for various types of service, including water, sewage and air.

ANSI/AWWA C110/A21.10 Fittings

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.

ANSI/AWWA C153/A21.53 Fittings

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.

Fittings Class 250 F&D

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.

Pressure Ratings

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.

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Blind Flanges

Size1
(in.)

O
Diameter
of Flange
(in).

Q
Thickness
of Flange
(in.)

V
Thickness
(in.)

X
Hub
Diameter
(in.)

Y
Overall
Thickness
(in.)

Weight
(lbs.)

4

9

0.94

0.88

5.31

1.31

14

6

11

1

0.94

7.56

1.56

25

8

13.5

1.12

1.06

9.69

1.75

40

10

16

1.19

1.12

11.94

1.94

60

12

19

1.25

0.81

14.06

2.19

80

14

21

1.38

0.88

-

-

110

16

23.5

1.44

1

-

-

145

18

25

1.56

1.06

-

-

175

20

27.5

1.69

1.12

-

-

225

24

32

1.88

1.25

-

-

328

30

38.75

2.12

2.32

-

-

703

36

46

2.38

2.99

-

-

1232

42

53

2.62

1.81

-

-

1230

48

59.5

2.75

2

-

-

1657

54

66.25

3

2.25

-

-

2249

60

73

3.12

2.38

-

-

2863

64

80

3.38

2.56

-

-

3761

1.) See General Notes concerning 3" size.

Note: Reducing blind flanges can be furnished. Specify flange outside diameter and the size of pipe.

Dished blind flanges 24" and larger are furnished with a lifting eye. The “V” thicknesses for 30" and 36" blind flanges are special manufacturing thicknesses.

Flat blind flanges and blind flanges smaller than 20" may be ordered with a special, fabricated lifting eye.

Size

Standard Design

Pressure Rating (psi)

Special Design

Pressure Rating (psi)

4"-10"

Flat

250

-

-

12"-24"

Dished

250

Flat

200

30"-48"

Dished

250

Flat

150

54"-64"

Dished

150

-

-

Product Line Information

Domestic Certification
Submittals
Pipe Manual
Project Mgt/Customer Service
Standards
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