METAL-KOREA 83

GENERAL SPECIFICATIONS

Class B & D Flanges Table 2Class D Flanges Table 3Class E Flanges Table 4

AWWAFLANGES

Grn

eral Sp

ecifica

tions

DDiimmeennssiioonn TToolleerraannccee iinn

Bore +1/16 -0

Outside diameter ±1/8

Thickness 18 in and smaller +1/8 -0

20 in and smaller +3/16 -0

Length through Hub +3/16 -1/16

Bolt Circle Diameter ±1/16

AWWA C207 FLANGES

11.. SSttaannddaarrdd FFiinniisshheess ffoorr CCoonnttaacctt FFaaccee ooff AAWWWWAA FFllaannggee

Flanges of all classes shall be flat faced-that is, without projection or raised face. The dimensions given forthickness are minimum. the flanges shall be faced smooth or may have a serrated finish of approximately 32serrations per inch, approximately 1/64 in. deep. Serrations may be either spiral or concentric.

33.. BBoollttiinngg

Bolts and nuts shall be carbon steel ASTM A307, Grades A or B. Bolts shall have regular unfinished square or hexagonal heads, and nuts shall have regular square or hexagonal dimensions all in accordance with ANSI B 18.21 for wrench head bolts and nuts and wrench openings.All bolts and nuts shall be threaded in accordance with ANSI B1.1 for screw threads, coares-thread series,Class 2A and 2B fit.

Note; For other dimensional tolerances, see ANSI B16.5, page 49.

44.. GGaasskkeettss

These standards are predicated on the user of either a cloth-inserted rubber gasket 1/16 in. thick or anabsestos ring gasket that is either 1/16 in. or 1/8 in. thick, at the purchaser's option; The gasket shallextend from the inside diameter or the flange to at least the inside edge of the bolt holes, or it may.

22.. DDiimmeennssiioonnaall TToolleerraanncceess ffoorr AAWWWWAA FFllaannggeess

82

M E T A L - K O R E A F L A N G E S

METAL-KOREA 8584 METAL-KOREA

CLASS B & D FLANGES TABLE 3

CLASS B & D FLANGES TABLE 2

Nominal

Pipe

Size

Thickness LengthThrough

Hub

BoreDRILLING

D B t T X C

Diam. ofBolt Holes

Diam. ofHub

at BaseNumberof Holes

BoltCircleDiam.

Notes:(1) For standard finishes for contact face, refer to apge 48.(2) For Slip-on Flanges, (Hub Type Flanges), the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.(3) The 'Bore' (B) shall be 3/16 in. larger than the nominal outside diameter of the pipe, unless otherwise specified.

Outside

Diam.

Class B Class D

SLIP-ON

4 9 4.57 1/2 7/8 55/16 71/2 8 3/4 3/4

5 10 5.66 9/16 11/4 65/16 81/2 8 3/4 7/8

6 11 6.72 9/16 11/4 79/16 91/2 8 3/4 7/8

8 131/2 8.72 9/16 11/4 911/16 113/4 8 3/4 7/8

10 16 10.88 11/16 11/4 12 141/4 12 3/4 112 19 12.88 11/16 11/4 143/8 17 12 3/4 114 21 14.19 3/4 11/4 153/4 183/4 12 7/8 11/816 231/2 16.19 3/4 11/4 18 211/4 16 7/8 11/818 25 18.18 3/4 11/4 197/8 223/4 16 7/8 11/420 271/2 20.19 3/4 11/4 22 25 20 7/8 11/422 291/2 22.19 1 13/4 241/4 271/4 20 7/8 13/824 32 24.19 1 13/4 261/8 291/2 20 7/8 13/826 341/4 26.19 1 13/4 281/2 314/3 24 7/8 13/828 361/2 28.19 1 13/4 301/2 34 28 7/8 13/830 383/4 30.19 1 13/4 321/2 36 28 1 13/832 413/4 32.19 11/8 13/4 343/4 382/1 28 1 15/834 433/4 34.19 11/8 13/4 363/4 402/1 32 1 15/836 46 36.19 11/8 13/4 383/4 423/4 32 1 15/838 483/4 38.19 11/8 13/4 403/4 451/4 32 1 15/840 503/4 40.19 11/8 13/4 43 471/4 36 1 15/842 53 42.19 11/4 13/4 45 492/1 36 11/8 15/844 551/4 44.19 11/4 21/4 47 513/4 40 11/8 15/846 571/4 46.19 11/4 21/4 49 533/4 40 11/8 15/848 591/2 48.19 13/8 21/2 51 56 44 11/8 15/850 613/4 50.19 13/8 21/2 53 581/4 44 11/4 17/852 64 52.19 13/8 21/2 55 601/2 44 11/4 17/854 661/4 54.19 13/8 21/2 57 623/4 44 13/8 17/860 73 60.19 11/2 23/4 63 691/4 52 13/8 17/866 80 66.19 11/2 23/4 69 76 52 13/8 17/872 861/2 72.19 11/2 23/4 75 821/2 60 13/8 17/878 93 78.19 13/4 3 811/4 89 64 15/8 21/884 993/4 84.19 13/4 3 871/2 951/2 64 15/8 21/890 1061/2 90.19 2 31/4 933/4 102 68 17/8 23/896 1131/4 96.19 2 31/4 100 1081/2 72 21/8 25/8102 120 102.19 21/4 31/2 1053/4 1141/2 72 21/8 25/8108 1263/4 108.19 21/4 31/2 1111/2 1203/4 72 21/8 25/8114 1331/2 114.19 21/2 33/4 1173/4 1263/4 76 23/8 27/8120 1401/4 120.19 21/2 33/4 124 1323/4 76 23/8 27/8

AWWA C207

Nominal

Pipe

Size

ThicknessBoreDRILLING

D B Class B(t) Class D(t) C

BoltCircleDiam.

Diam. ofBolt Holes

Notes:(1) The 'Bore' (B) shall be 3/16 in. larger than the nominal outside diameter of the pipe, unless otherwise specified.

Numberof

Holes

Outside

Diam.

Class B Class D

SLIP-ON BLIND

4 9 4.57 5/8 5/8 71/2 8 3/4 3/4

5 10 5.66 5/8 5/8 81/2 8 3/4 7/8

6 11 6.72 11/16 11/16 91/2 8 3/4 7/8

8 131/2 8.72 11/16 11/16 113/4 8 3/4 7/8

10 16 10.88 11/16 11/16 141/4 12 3/4 112 19 12.88 11/16 13/16 17 12 3/4 114 21 14.19 11/16 15/16 183/4 12 7/8 11/816 231/2 16.19 11/16 1 211/4 16 7/8 11/818 25 18.18 11/16 11/16 223/4 16 7/8 11/420 271/2 20.19 11/16 11/8 25 20 7/8 11/422 291/2 22.19 3/4 13/16 271/4 20 7/8 13/624 32 24.19 3/4 11/4 291/2 20 7/8 13/826 341/4 26.19 13/16 15/16 313/4 24 7/8 13/828 361/2 28.19 7/8 15/16 34 28 7/8 13/830 383/4 30.19 7/8 13/8 36 28 1 13/832 413/4 32.19 15/16 11/2 381/2 28 1 15/834 433/4 34.19 15/16 11/2 401/2 32 1 15/836 46 36.19 1 15/8 423/4 32 1 15/838 483/4 38.19 1 15/8 451/4 32 1 15/840 503/4 40.19 1 15/8 471/4 36 1 15/842 53 42.19 11/8 13/4 491/2 36 11/8 15/844 551/4 44.19 11/8 13/4 513/4 40 11/8 15/846 571/4 46.19 11/8 13/4 533/4 40 11/8 15/848 591/2 48.19 11/4 13/4 56 44 11/8 15/850 613/4 50.19 11/4 2 581/4 44 11/4 17/852 64 52.19 11/4 2 601/2 44 11/4 17/954 661/4 54.19 13/8 21/6 623/4 44 13/4 17/860 73 60.19 11/2 21/4 691/4 52 13/8 17/866 80 66.19 15/8 21/2 76 52 13/8 17/872 861/2 72.19 13/4 25/8 821/2 60 13/8 17/878 93 78.19 2 23/4 89 64 15/8 21/884 993/4 84.19 2 23/4 951/2 64 15/8 21/890 1061/2 90.19 21/4 3 102 68 17/8 23/896 1131/4 96.19 21/4 3 1081/2 68 17/8 23/8102 120 102.19 21/2 31/4 1141/2 72 21/8 25/8108 1263/4 108.19 21/2 31/4 1203/4 72 21/8 25/8114 1331/2 114.19 23/4 31/2 1263/4 76 23/8 27/8120 1401/4 120.19 23/4 31/2 1323/4 76 23/8 27/8

Unit:mmUnit:mm

AWWA Standard Steel Ring Flanges, Class B (86 psi)and Class D (175-150 psi)

86 METAL-KOREA

CLASS E FLANGES TABLE 4

AWWA C207

Nominal

Pipe

Size

Thickness LengthThrough

Hub

BoreDRILLING

D B t T X C

BoltCircle Diam.

Diam. ofBolt Holes

Diam. of Hub

at Base

Notes:(1) The 'Bore' (B) shall be 3/16 in. larger than the nominal outside diameter of the pipe, unless otherwise specified.

Numberof Holes

Outside

Diam.

4 9 4.57 15/16 15/16 55/16 71/2 8 3/4

5 10 5.66 15/16 17/16 67/16 81/2 8 7/8

6 11 6.72 1 19/16 79/16 91/2 8 7/8

8 131/2 8.72 11/8 13/4 911/16 113/4 8 7/8

10 16 10.88 15/16 115/16 12 141/4 12 112 19 12.88 11/4 23/16 143/8 17 12 114 21 14.19 13/8 21/4 153/4 183/4 12 11/816 231/2 16.19 17/16 21/2 18 211/4 16 11/818 25 18.18 19/16 211/16 197/8 223/4 16 11/420 271/2 20.19 111/16 27/8 22 25 20 11/422 291/2 22.19 113/16 31/8 24 271/4 20 13/824 32 24.19 17/8 31/4 261/8 291/2 20 13/826 341/4 26.19 2 33/8 281/2 314/3 24 13/828 361/2 28.19 21/16 37/16 303/4 34 28 13/830 383/4 30.19 21/8 31/2 323/4 36 28 13/832 413/4 32.19 21/4 35/8 35 381/2 28 15/834 433/4 34.19 25/16 311/16 37 401/2 32 15/836 46 36.19 23/8 33/4 391/4 423/4 32 15/838 483/4 38.19 23/8 33/4 413/4 451/4 32 15/840 503/4 40.19 21/2 37/8 433/4 471/4 36 15/842 53 42.19 25/8 4 46 491/2 36 15/844 551/4 44.19 25/8 4 48 513/4 40 15/846 571/4 46.19 211/16 41/16 50 533/4 40 15/848 591/2 48.19 23/4 41/8 521/4 56 44 15/850 613/4 50.19 23/4 41/8 541/4 581/4 44 17/852 64 52.19 27/8 41/4 561/2 601/2 44 17/854 661/4 54.19 3 43/8 583/4 623/4 44 17/860 73 60.19 31/8 41/2 651/4 691/4 52 17/866 80 66.19 33/8 47/8 711/2 76 52 17/872 861/2 72.19 31/2 5 781/2 831/2 60 17/878 93 78.19 37/8 53/8 841/2 89 64 21/884 993/4 84.19 37/8 53/8 901/2 951/2 64 21/890 1061/2 90.19 41/4 53/4 963/4 102 68 23/896 1131/4 96.19 41/4 53/4 1023/4 1081/2 68 23/8102 120 102.19 45/8 61/8 1083/4 1141/2 72 25/8108 1263/4 108.19 45/8 61/8 1141/2 1203/4 72 25/8114 1331/2 114.19 5 61/4 1211/4 1263/4 76 27/8120 1401/4 120.19 5 61/2 128 1323/4 76 27/8

Unit:mm

SLIP-ON

AWWA Standard Steel Hub Flanges, Class E (275 psi)