Ductile Iron Pipe Icon
Restrained Joint Pipe

Fastite Joint Pipe With Fast-Grip Gasket

The AMERICAN Fastite joint is a flexible, rubber ring compression-type joint used extensively in underground service for water, sewage or other approved liquids. It has the proven long-life and high-strength qualities inherent in joints produced in accordance with AWWA C111 and pipe produced centrifugally in accordance with AWWA C151.

The patented AMERICAN Fastite joint socket, which is scientifically designed with two gasket recesses and a dividing buttress, is manufactured to close tolerances so that the gasket is self-centered, securely confined, and firmly compressed for a permanent, tight, trouble-free joint. The Fastite joint seal, bubble-tight under vacuum and external pressure, becomes even tighter with the application of internal pressure due to a specially designed wedging surface in the socket.

The Fastite joint pipe bell opening is slightly tapered to provide easy entry of the pipe end; the flared socket design permits liberal joint deflection. The plain end of the pipe is tapered or rounded to facilitate entry into the bell and self-centering in the gasket. On pipe cut in the field, the plain end can be easily beveled and smoothed by the use of a portable grinding wheel or other suitable apparatus. A stripe is painted on the plain end of AMERICAN Fastite joint pipe to provide a visual means of checking the joint alignment and to assure proper insertion.

For piping installations that require restraint, AMERICAN Fast-Grip gaskets have been proven as a superior field-adaptable method of restraining 4” to 30” ductile iron pipe or fittings. The Fast-Grip gasket has the same basic shape as AMERICAN’s Fastite gasket, so it can be used in any 4" to 30" standard Fastite pipe or fitting socket. The gasket rubber is standard SBR1 and meets all the material requirements of ANSI/AWWA C111/A21.11.

The restraint provided by the patented2 AMERICAN Fast-Grip gasket is due to the development of wedging action between pairs of high-strength stainless steel elements spaced around the gasket. The outer metal element acts as a bearing member for the wedge-shaped inner element, which has sharp teeth on its inner surface for gripping the spigot.

Because of the wedging design utilized, the force between the spigot and the socket of the joint is essentially constant at any given pressure thrust regardless of the “tightness” or “looseness” of the joint fit or the joint deflection.

Fast-Grip gaskets are suitable for an allowable working pressure of 350 psi for 4”-18”3 pipe and 250 psi for 20” and 24”3 sizes. The 30” size is suitable for a 150 psi working pressure.

1.) Contact AMERICAN if other types of rubber are required.

2.) U.S. Patent No. 5,067,751

3.) Because the pressure rating of the joint cannot exceed that of the pipe, the 350 psi rating for 14” through 18” sizes and the 250 psi rating for 24” size are limited by the pressure class of pipe with which they are used. For example, an 18” Fast-Grip gasket used with pressure class 250 pipe would carry a rating of 250 psi instead of 350 psi. Contact AMERICAN for higher working pressure applications.

Read More
contact sales

Special Thickness Classes

These are special thickness classes as shown in AWWA C150 and C151. AMERICAN can furnish any thickness in between these special thicknesses if deemed desirable for major projects.

Special classes are most appropriately used for some threaded, grooved, or ball and socket pipes or for extraordinary design conditions, and they are generally less available than standard pressure class pipe.

For pressure rating and maximum depth of cover capabilities of special thickness classes, check with AMERICAN. These capabilities can be estimated by comparing metal thickness and capabilities of those of pressure classes, or calculated by using the design formulas shown in AWWA C150.

Nominal Wall Thicknesses for Special Thickness Classes

ANSI/AWWA C150/A21.50 ANSI/AWWA C151/A21.51

Size (in.)

Outside
Diameter
(in.)

Special Thickness Classes – Wall Thickness (in.)1

50

51

52

53

54

55

56

4

4.80

-

0.26

0.29

0.32

0.35

0.38

0.41

6

6.90

0.25

0.28

0.31

0.34

0.37

0.40

0.43

8

9.05

0.27

0.30

0.33

0.36

0.39

0.42

0.45

10

11.10

0.29

0.32

0.35

0.38

0.41

0.44

0.47

12

13.20

0.31

0.34

0.37

0.40

0.43

0.46

0.49

14

15.30

0.33

0.36

0.39

0.42

0.45

0.48

0.51

16

17.40

0.34

0.37

0.40

0.43

0.46

0.49

0.52

18

19.50

0.35

0.38

0.41

0.44

0.47

0.50

0.53

20

21.60

0.36

0.39

0.42

0.45

0.48

0.51

0.54

24

25.80

0.38

0.41

0.44

0.47

0.50

0.53

0.56

30

32.00

0.39

0.43

0.47

0.51

0.55

0.59

0.63

Wall Thicknesses and Weights

Special Thickness Classes ANSI/AWWA C151/A21.51

Size in.

Thickness Class

Wall Thickness in.

Weight in Pounds

Per Foot Plain End

Per Foot Inc. Bell

Per Nominal2 Length

4

51

0.26

11.3

11.7

213

4

52

0.29

12.6

13

236

4

53

0.32

13.8

14.2

257

4

54

0.35

15

15.4

279

4

55

0.38

16.1

16.5

300

4

56

0.41

17.3

17.7

321

6

50

0.25

16

16.7

335

6

51

0.28

17.8

18.5

370

6

52

0.31

19.6

20.3

410

6

53

0.34

21.4

22.1

445

6

54

0.37

23.2

23.9

480

6

55

0.4

25

25.7

515

6

56

0.43

26.7

27.4

550

8

50

0.27

22.8

23.8

480

8

51

0.3

25.2

26.2

525

8

52

0.33

27.7

28.7

575

8

53

0.36

30.1

31.1

625

8

54

0.39

32.5

33.5

675

8

55

0.42

34.8

35.8

720

8

56

0.45

37.2

38.3

770

10

50

0.29

30.1

31.4

630

10

51

0.32

33.2

34.5

695

10

52

0.35

36.2

37.5

755

10

53

0.38

39.2

40.5

815

10

54

0.41

42.1

43.5

875

10

55

0.44

45.1

46.5

935

10

56

0.47

48

49.3

990

12

50

0.31

38.4

40

805

12

51

0.34

42

43.6

875

12

52

0.37

45.6

47.2

950

12

53

0.4

49.2

50.8

1020

12

54

0.43

52.8

54.3

1090

12

55

0.46

56.3

57.9

1165

12

56

0.49

59.9

61.5

1235

14

50

0.33

47.5

50.3

1010

14

51

0.36

51.7

54.6

1095

14

52

0.39

55.9

58.7

1175

14

53

0.42

60.1

62.9

1260

14

54

0.45

64.2

67

1345

14

55

0.48

68.4

71.3

1430

14

56

0.51

72.5

75.3

1510

16

50

0.34

55.8

59

1180

16

51

0.37

60.6

63.8

1280

16

52

0.4

65.4

68.6

1375

16

53

0.43

70.1

73.3

1470

16

54

0.46

74.9

78.1

1565

16

55

0.49

79.7

82.9

1660

16

56

0.52

84.4

87.6

1755

18

50

0.35

64.4

68

1365

18

51

0.38

69.8

73.4

1470

18

52

0.41

75.2

78.8

1580

18

53

0.44

80.6

84.2

1690

18

54

0.47

86

89.6

1795

18

55

0.5

91.3

95

1905

18

56

0.53

96.7

100.3

2010

20

50

0.36

73.5

77.5

1555

20

51

0.39

79.5

83.5

1675

20

52

0.42

85.5

89.5

1795

20

53

0.45

91.5

95.5

1915

20

54

0.48

97.5

101.5

2035

20

55

0.51

103.4

107.5

2155

20

56

0.54

109.3

113.3

2270

24

50

0.38

92.9

97.7

1960

24

51

0.41

100.1

104.9

2100

24

52

0.44

107.3

112.1

2245

24

53

0.47

114.4

119.2

2390

24

54

0.5

121.6

126.4

2535

24

55

0.53

128.8

133.5

2675

24

56

0.56

135.9

140.7

2820

30

50

0.39

118.5

126.7

2540

30

51

0.43

130.5

138.7

2780

30

52

0.47

142.5

150.7

3020

30

53

0.51

154.4

162.6

3260

30

54

0.55

166.3

174.5

3495

30

55

0.59

178.2

186.4

3735

30

56

0.63

190

198.2

3970

Note: Dimensions, lengths, weights, etc., are subject to change at our option.

1. ) These are Special Thickness Classes as shown in AWA C150 and C151. They were previously designated standard thickness classes. AMERICAN can furnish any thickness in between these special thicknesses if deemed economical for major projects.

2. ) 4" Fastite is furnished in 18-foot nominal lengths – weights for all other sizes are for 20-foot nominal lengths.

Product Line Information

Domestic Certification
Submittals
Pipe Manual
Project Mgt/Customer Service
Standards
Aerial view of iron pipes

Contact Sales

Reach out to our sales team for more product information.
contact sales

Today's Infrastructure Solutions in the U.S. and Around the Globe.

About Us
American Mark