AWWA Flange Standard

AWWA C207 Flanges Manufacturers

AWWA Flange refers to flanges manufactured according to the standards set by the American Water Works Association (AWWA), a key organization in the water utility industry. These flanges are specifically designed for use in water treatment, distribution systems, and wastewater management applications. The AWWA flanges are generally used to connect pipes, valves, and other fittings in water pipelines to ensure leak-free, secure joints that can withstand the pressure and environmental conditions of water systems.

AWWA flanges are typically made from materials such as ductile iron, carbon steel, or stainless steel, offering excellent resistance to corrosion and ensuring longevity in both potable and non-potable water systems. The most common types of AWWA flanges include ring flanges and slip-on flanges, with designs that ensure ease of installation, maintenance, and reliable performance in waterworks.

The AWWA standards, such as AWWA C207, define specifications for flange dimensions, pressure ratings, and material characteristics, ensuring uniformity and compatibility across different manufacturers and applications. These flanges are crucial for maintaining the integrity of water pipelines and ensuring the smooth flow of water in municipal and industrial water systems.

AWWA Flange Standard

AWWA C207 Claas Class B, Class D, Class E, And Class F Flange, AWWA C228 Flange, AWWA C115 Flange, AWWA C200 Flange, AWWA C600 Flange, AWWA D100 Flange, AWWA C504 Flange, AWWA M55 Flange, AWWA C651 Flange, AWWA C900 Flange

AWWA C207 Flanges Specifications

Size Range

15mm ( 1/2" NPS ) up to 1200 mm ( 48" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12

Flange Face Type

Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ)

Stainless Steel

ASTM A182 F 304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.

Standards / Dimension

AWWA (American Water Works Association)

Carbon Steel

ASTM A105/A105N (SA105N), LTCS A350 LF2, A694

Alloy Steel

ASTM A182 / SA182 - F1 / F5 / F9 / F11 / F12 / F22 / F91

Pressure Class

Class B, Class D, Class E, and Class F

Duplex & Super Duplex

ASTM A182 / ASME SA182 - S31803, S32205, 2205, S32750, S32760, S32950, 2507.

MTC

EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103

steel hub flanges class D AWWA C207Dimensions

NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt T L E
4 100 228.60 116.08 8 190.50            15.88 12.70 22.23 134.92
5 125 254.00 143.76 8 215.90 19.05 14.27 31.75 160.32
6 150 279.40 170.69 8 241.30 19.05 14.27 31.75 192.07
8 200 342.90 221.49 8 298.45 19.05 14.27 31.75 246.08
10 250 406.40 276.35 12 361.95 22.23 17.48 31.75 304.80
12 300 482.60 327.15 12 431.80 22.23 17.48 31.75 365.13
14 350 533.40 360.43 12 476.25 25.40 19.05 31.75 400.05
16 400 596.90 411.23 16 539.75 25.40 19.05 31.75 457.20
18 450 635.00 462.03 16 577.85 28.58 19.05 31.75 504.83
20 500 698.50 512.83 20 635.00 28.58 19.05 31.75 558.80
22 550 749.30 563.63 20 692.15 31.75 25.40 44.45 615.95
24 600 812.80 614.43 20 749.30 31.75 25.40 44.45 663.58
26 650 869.95 665.23 24 806.45 31.75 25.40 44.45 723.90
28 700 927.10 716.03 28 863.60 31.75 25.40 44.45 774.70
30 750 984.25 766.83 28 914.40 31.75 25.40 44.45 825.50
32 800 1060.45 817.63 28 977.90 38.10 28.58 44.45 882.65
34 850 1111.25 868.43 32 1028.70 38.10 28.58 44.45 933.45
36 900 1168.40 919.23 32 1085.85 38.10 28.58 44.45 984.25
38 950 1238.25 970.03 32 1149.35 38.10 28.58 44.45 1035.05
40 1000 1289.05 1020.83 36 1200.15 38.10 28.58 44.45 1092.20
42 1050 1346.20 1071.63 36 1257.30 38.10 31.75 44.45 1143.00
44 1100 1403.35 1122.43 40 1314.45 38.10 31.75 57.15 1193.80
46 1150 1454.15 1173.23 40 1365.25 38.10 31.75 57.15 1244.60
48 1200 1511.30 1224.03 44 1422.40 38.10 34.93 63.50 1295.40
50 1250 1568.45 1274.83 44 1479.55 44.45 34.93 63.50 1346.20
52 1300 1625.60 1325.63 44 1536.70 44.45 34.93 63.50 1397.00
54 1350 1682.75 1376.43 44 1593.85 44.45 34.93 63.50 1447.80
60 1500 1854.20 1528.83 52 1758.95 44.45 38.10 69.85 1600.20
66 1650 2032.00 1681.23 52 1930.40 44.45 38.10 69.85 1752.60
72 1800 2197.10 1833.63 60 2095.50 44.45 38.10 69.85 1905.00
78 1950 2362.20 1986.03 64 2260.60 50.80 44.45 76.20 2063.75
84 2100 2533.65 2138.43 64 2425.70 50.80 44.45 76.20 2222.50
90 2250 2705.10 2290.83 68 2590.80 57.15 50.80 82.55 2381.25
96 2400 2876.55 2443.23 68 2755.90 57.15 50.80 82.55 2540.00
NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt T L E
4 100 228.60 116.08 8 190.50             15.88 23.83 33.32 134.92
5 125 254.00 143.76 8 215.90 19.05 23.83 36.53 163.53
6 150 279.40 170.69 8 241.30 19.05 25.40 39.67 192.07
8 200 342.90 221.49 8 298.45 19.05 28.58 44.45 246.08
10 250 406.40 276.35 12 361.95 22.23 30.18 49.23 304.80
12 300 482.60 327.15 12 431.80 22.23 31.75 55.58 365.13
14 350 533.40 360.43 12 476.25 25.40 34.93 57.15 400.05
16 400 596.90 411.23 16 539.75 25.40 36.53 63.50 457.20
18 450 635.00 462.03 16 577.85 28.58 39.67 68.28 504.83
20 500 698.50 512.83 20 635.00 28.58 42.88 73.03 558.80
22 550 749.30 563.63 20 692.15 31.75 46.02 79.38 609.60
24 600 812.80 614.43 20 749.30 31.75 48.20 82.55 663.58
26 650 869.95 665.23 24 806.45 31.75 50.80 85.73 723.90
28 700 927.10 716.03 28 863.60 31.75 52.37 87.33 781.05
30 750 984.25 766.83 28 914.40 31.75 53.98 88.90 831.85
32 800 1060.45 817.63 28 977.90 38.10 57.15 92.08 889.00
34 850 1111.25 868.43 32 1028.70 38.10 58.72 93.68 939.80
36 900 1168.40 919.23 32 1085.85 38.10 60.33 95.25 996.95
38 950 1238.25 970.03 32 1149.35 38.10 60.33 95.25 1060.45
40 1000 1289.05 1020.83 36 1200.15 38.10 63.50 98.43 1111.25
42 1050 1346.20 1071.63 36 1257.30 38.10 66.68 101.60 1168.40
44 1100 1403.35 1122.43 40 1314.45 38.10 66.68 101.60 1219.20
46 1150 1454.15 1173.23 40 1365.25 38.10 68.28 103.17 1270.00
48 1200 1511.30 1224.03 44 1422.40 38.10 69.85 104.78 1327.15
50 1250 1568.45 1274.83 44 1479.55 44.45 69.85 104.78 1377.95
52 1300 1625.60 1325.63 44 1536.70 44.45 73.03 107.95 1435.10
54 1350 1682.75 1376.43 44 1593.85 44.45 76.20 111.13 1492.25
60 1500 1854.20 1528.83 52 1758.95 44.45 79.38 114.30 1657.35
66 1650 2032.00 1681.23 52 1930.40 44.45 85.73 123.83 1816.10
72 1800 2197.10 1833.63 60 2095.50 44.45 88.90 127.00 1993.90
78 1950 2362.20 1986.03 64 2260.60 50.80 98.43 136.53 2146.30
84 2100 2533.65 2138.43 64 2425.70 50.80 98.43 136.53 2298.70
90 2250 2705.10 2290.83 68 2590.80 57.15 107.95 146.05 2457.45
96 2400 2876.55 2443.23 68 2755.90 57.15 107.95 146.05 2609.85

steel ring flanges class B AWWA C207 Dimensions

NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 228.60 116.08 8 190.50            15.88 15.88              15.88          
5 125 254.00 143.76 8 215.90 19.05 15.88 15.88
6 150 279.40 170.69 8 241.30 19.05 17.48 17.48
8 200 342.90 221.49 8 298.45 19.05 17.48 17.48
10 250 406.40 276.35 12 361.95 22.23 17.48 17.48
12 300 482.60 327.15 12 431.80 22.23 17.48 18.26
14 350 533.40 360.43 12 476.25 25.40 17.48 20.1
16 400 596.90 411.23 16 539.75 25.40 17.48 22.66
18 450 635.00 462.03 16 577.85 28.58 17.48 24.13
20 500 698.50 512.83 20 635.00 28.58 17.48 26.42
22 550 749.30 563.63 20 692.15 31.75 19.05 28.74
24 600 812.80 614.43 20 749.30 31.75 19.05 30.89
26 650 869.95   24 806.45 31.75 20.62 33.2
28 700 927.10   28 863.60 31.75 22.23 35.5
30 750 984.25   28 914.40 31.75 22.23 37.53
32 800 1060.45   28 977.90 38.10 23.83 40.16
34 850 1111.25   32 1028.70 38.10 23.83 42.19
36 900 1168.40   32 1085.85 38.10 25.40 44.48
38 950 1238.25   32 1149.35 38.10 25.40 47.06
40 1000 1289.05   36 1200.15 38.10 25.40 49.09
42 1050 1346.20   36 1257.30 38.10 28.58 51.4
44 1100 1403.35   40 1314.45 38.10 28.58 53.7
46 1150 1454.15   40 1365.25 38.10 28.58 55.73
48 1200 1511.30   44 1422.40 38.10 31.75 58.03
50 1250 1568.45   44 1479.55 44.45 31.75 60.38
52 1300 1625.60   44 1536.70 44.45 31.75 62.69
54 1350 1682.75   44 1593.85 44.45 34.93 64.99
60 1500 1854.20   52 1758.95 44.45 38.10 71.63
66 1650 2032.00   52 1930.40 44.45 41.28 78.53
72 1800 2197.10   60 2095.50 44.45 44.45 85.17
78 1950 2362.20   64 2260.60 50.80 50.80  
84 2100 2533.65   64 2425.70 50.80 50.80  
90 2250 2705.10   68 2590.80 57.15 57.15  
96 2400 2876.55   68 2755.90 57.15 57.15  
102 2550 3048.00   72 2908.30 63.50 63.50  
108 2700 3219.45   72 3067.05 63.50 63.50  
114 2850 3390.90   76 3219.45 69.85 69.85  
120 3000 3562.35   76 3371.85 69.85 69.85  
126 3150 3733.80   80 3536.95 76.20 76.20  
132 3300 3905.25   80 3702.05 76.20 76.20  
144 3600 4248.15   84 4019.55 82.55 82.55  
NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 228.60 116.08 8 190.50             15.88 15.88              15.88           
5 125 254.00 143.76 8 215.90 19.05 15.88 16.51
6 150 279.40 170.69 8 241.30 19.05 17.48 17.59
8 200 342.90 221.49 8 298.45 19.05 17.48 20.62
10 250 406.40 276.35 12 361.95 22.23 17.48 24.21
12 300 482.60 327.15 12 431.80 22.23 20.62 28.37
14 350 533.40 360.43 12 476.25 25.40 23.83 28.78
16 400 596.90 411.23 16 539.75 25.40 25.40 32.13
18 450 635.00 462.03 16 577.85 28.58 26.97 33.81
20 500 698.50 512.83 20 635.00 28.58 28.58 36.77
22 550 749.30 563.63 20 692.15 31.75 30.18 39.83
24 600 812.80 614.43 20 749.30 31.75 31.75 42.18
26 650 869.95   24 806.45 31.75 33.32 45.37
28 700 927.10   28 863.60 31.75 33.32 48.4
30 750 984.25   28 914.40 31.75 34.93 51
32 800 1060.45   28 977.90 38.10 38.10 54.6
34 850 1111.25   32 1028.70 38.10 38.10 57.21
36 900 1168.40   32 1085.85 38.10 41.28 60.2
38 950 1238.25   32 1149.35 38.10 41.28 63.66
40 1000 1289.05   36 1200.15 38.10 41.28 66.28
42 1050 1346.20   36 1257.30 38.10 44.45 69.32
44 1100 1403.35   40 1314.45 38.10 44.45 72.36
46 1150 1454.15   40 1365.25 38.10 44.45 74.99
48 1200 1511.30   44 1422.40 38.10 47.63 78.03
50 1250 1568.45   44 1479.55 44.45 50.80 81.18
52 1300 1625.60   44 1536.70 44.45 50.80 84.21
54 1350 1682.75   44 1593.85 44.45 53.98 87.25
60 1500 1854.20   52 1758.95 44.45 57.15 95.97
66 1650 2032.00   52 1930.40 44.45 63.50 105.6
72 1800 2197.10   60 2095.50 44.45 66.68 113.8
78 1950 2362.20   64 2260.60 50.80 69.85  
84 2100 2533.65   64 2425.70 50.80 73.03  
90 2250 2705.10   68 2590.80 57.15 76.20  
96 2400 2876.55   68 2755.90 57.15 82.55  
102 2550 3048.00   72 2908.30 63.50 82.55  
108 2700 3219.45   72 3067.05 63.50 85.73  
114 2850 3390.90   76 3219.45 69.85 88.90  
120 3000 3562.35   76 3371.85 69.85 88.90  
126 3150 3733.80   80 3536.95 76.20 95.25  
132 3300 3905.25   80 3702.05 76.20 98.43  
144 3600 4248.15   84 4019.55 82.55 104.78  
NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 228.60 116.08 8 190.50            15.88 15.88            28.58
5 125 254.00 143.76 8 215.90 19.05 19.05 30.18
6 150 279.40 170.69 8 241.30 19.05 19.05 33.35
8 200 342.90 221.49 8 298.45 19.05 19.05 38.1
10 250 406.40 276.35 12 361.95 22.23 22.23 39.7
12 300 482.60 327.15 12 431.80 22.23 22.23 44.45
14 350 533.40 360.43 12 476.25 25.40 25.40 47.63
16 400 596.90 411.23 16 539.75 25.40 25.40 50.8
18 450 635.00 462.03 16 577.85 28.58 28.58 53.98
20 500 698.50 512.83 20 635.00 28.58 28.58 60.33
22 550 749.30 563.63 20 692.15 31.75 31.75 63.5
24 600 812.80 614.43 20 749.30 31.75 31.75 66.68
26 650 869.95   24 806.45 31.75 31.75 69.85
28 700 927.10   28 863.60 31.75 31.75 69.85
30 750 984.25   28 914.40 31.75 31.75 73.03
32 800 1060.45   28 977.90 38.10 38.10 76.2
34 850 1111.25   32 1028.70 38.10 38.10 77.46
36 900 1168.40   32 1085.85 38.10 38.10 81.51
38 950 1238.25   32 1149.35 38.10 38.10 86.2
40 1000 1289.05   36 1200.15 38.10 38.10 89.74
42 1050 1346.20   36 1257.30 38.10 38.10 93.86
44 1100 1403.35   40 1314.45 38.10 38.10 97.97
46 1150 1454.15   40 1365.25 38.10 38.10 101.53
48 1200 1511.30   44 1422.40 38.10 38.10 105.65
50 1250 1568.45   44 1479.55 44.45 44.45 109.9
52 1300 1625.60   44 1536.70 44.45 44.45 114.02
54 1350 1682.75   44 1593.85 44.45 44.45 118.14
60 1500 1854.20   52 1758.95 44.45 44.45 129.95
66 1650 2032.00   52 1930.40 44.45 44.45 142.26
72 1800 2197.10   60 2095.50 44.45 44.45 154.08
78 1950 2362.20   64 2260.60 50.80 50.80  
84 2100 2533.65   64 2425.70 50.80 50.80  
90 2250 2705.10   68 2590.80 57.15 57.15  
96 2400 2876.55   68 2755.90 57.15 57.15  
102 2550 3048.00   72 2908.30 63.50 63.50  
108 2700 3219.45   72 3067.05 63.50 63.50  
114 2850 3390.90   76 3219.45 69.85 69.85  
120 3000 3562.35   76 3371.85 69.85 69.85  
126 3150 3733.80   80 3536.95 76.20 76.20  
132 3300 3905.25   80 3702.05 76.20 76.20  
144 3600 4248.15   84 4019.55 82.55 82.55  
NPS DN OD, A ID, B Number of Bolts Diam.of Bolt Circle, C Diam.of Bolt Thickness of Flange, T Thickness of Blind, T
4 100 254.00 116.08 8 200.15           19.05 28.70            28.7
5 125 279.40 143.76 8 234.95 19.05 30.73 30.73
6 150 317.50 170.94 12 269.75 19.05 33.27 33.27
8 200 381.00 221.74 12 330.20 22.23 33.27 33.27
10 250 444.50 276.35 16 387.35 25.40 38.10 38.1
12 300 520.70 327.15 16 450.85 28.58 41.40 41.4
14 350 584.20 360.43 20 514.35 28.58 49.28 49.28
16 400 647.70 411.23 20 571.50 31.75 54.36 54.36
18 450 711.20 462.03 24 628.65 31.75 57.15 57.125
20 500 774.70 512.83 24 685.80 31.75 59.18 59.18
22 550 838.20 563.63 24 742.95 31.75 63.50 63.5
24 600 914.40 614.43 24 812.80 38.10 68.33 68.53
26 650 971.55   28 876.30 44.45 76.20 76.2
28 700 1035.05   28 939.80 44.45 79.50 79.5
30 750 1092.20   28 996.95 44.45 80.01 80.42
32 800 1149.35   28 1054.10 44.45 82.55 84.62
34 850 1206.50   28 1104.90 44.45 85.85 88.25
36 900 1270.00   32 1168.40 50.80 87.88 93.25
38 950 1327.15   32 1219.20 50.80 88.90 96.9
40 1000 1377.95   36 1276.35 50.80 92.20 101.4
42 1050 1447.80   36 1339.85 50.80 96.77 105.92
44 1100 1504.95   36 1397.00 50.80 101.60 110.19
46 1150 1562.10   40 1454.15 50.80 104.90 114.43
48 1200 1651.00   40 1543.05 50.80 114.30 121.44

AWWA C228 Flange Standards

The AWWA C228 standard ensures that ductile iron flanges used in waterworks are reliable, durable, and compatible with the broader network of water distribution components, helping to maintain the smooth operation of municipal and industrial water systems.

  1. AWWA C207 – Specifies steel ring flanges for water pipeline connections, including dimensions and pressure ratings.
  2. AWWA C110 – Covers ductile and gray iron fittings, including design and material specifications for water pipelines.
  3. AWWA C151 – Specifies requirements for ductile iron pipes, including material, dimensions, and pressure ratings for water distribution.
  4. AWWA C153 – Covers compact ductile iron fittings, focusing on weight reduction and installation flexibility for waterworks.
  5. AWWA C219 – Defines requirements for mechanical-joint restraints to secure fittings and joints under pressure.
  6. AWWA C222 – Outlines cement-mortar linings and coatings for steel pipes to enhance corrosion resistance and durability.
  7. AWWA C228 – Specifies flanged ductile iron fittings for water distribution, detailing material and pressure ratings.
  8. AWWA C300 – Covers reinforced concrete pressure pipes for large-diameter water transmission systems, with design and testing specifications.
  9. AWWA C306 – Details requirements for prestressed concrete pressure pipes, ensuring strength for high-pressure applications.
  10. AWWA C400 – Specifies fiberglass pressure pipes, covering design, manufacturing, and installation for water distribution.
  11. AWWA C500 – Defines specifications for gate valves in waterworks, including materials, design, and performance characteristics.
  12. AWWA C508 – Covers swing check valves to prevent backflow in water pipelines, detailing design and performance requirements.
Why Ample Alloys For AWWA Flange Standard!

We are trusted provider for AWWA flanges, offering a range of benefits that make us the go-to choice for industries requiring high-quality, reliable flanges.

Commitment to Quality

Ample Alloys ensures AWWA flanges meet rigorous industry standards for durability and reliability in waterworks applications.

Customization Options

Provides custom solutions, including special sizes, pressure ratings, and flange face types.

Competitive Pricing

High-quality AWWA flanges at competitive prices, offering cost-effective solutions for waterworks projects.

Expert Support

Technical experts guide material selection, flange specifications, and other requirements for waterworks systems.

AWWA flanges are typically made from materials such as carbon steel, stainless steel, ductile iron, and sometimes other alloys, depending on the application and environmental conditions.

Yes, AWWA flanges can be customized to meet specific project requirements, including special sizes, pressure ratings, and flange face types.

AWWA flanges are compatible with other standards such as ANSI, ASME, and DIN, but it's important to verify compatibility for specific applications, especially for large-scale projects.

Available Types of Flanges