Flange Details

ADIP Table No. 6-1

Notes:
* These sizes, listed for information only, are not included in AWWA C110, C111 or C153.
**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.
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.
FLANGES: The flanges shown above 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.
Drilling of flanges can be rotated when required; for those sizes with an even number of bolt holes in each quadrant, fitting can be rotated 45° with standard drilling.
AMERICAN recommends AMERICAN Toruseal® gaskets shown below to be used for normal water service.
See Flanged Pipe (Section 8), Table No. 8-3 for information on bolts and studs.
See General Notes.

ADIP Table No. 6-16

Notes:
*Ductile Companion Flanges are threaded for fabrication on pipe of standard steel pipe outside diameter unless specified otherwise. No gray iron Companion Flanges are produced. Check AMERICAN if larger Companion Flanges are desired.
See General Notes concerning 3" size.
See Flanged Pipe (Section 8) for Companion Flanges for ductile iron pipe.
Reducing Blind and Companion 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.

Blind Flange Design

ADIP Table No. 6-17

Notes:
See General Notes.

ADIP Table No. 6-15

Notes:
*Pressure rating designated is maximum water working pressure and is based on the maximum rating of C110, C115 or C153 flanges. AMERICAN Toruseal® gaskets meet the description of "specially designed gaskets" shown in the appendices of AWWA C110, C111, and C115, and "special gaskets" shown in the body of AWWA C111.
**Bolt torque applicable only to joints with Toruseal® gaskets.
?The 64" Toruseal® gasket contains an additional torus to accommodate bolting a 64" C115 or C153 flange to a standard 66" flange (see Table 6-1).
AMERICAN Toruseal® gaskets are normally black and furnished of SBR rubber per ANSI/AWWA C111/A21.11. This rubber compound is NSF 61 certified for contact with potable water and is otherwise physically superior to red rubber sometimes used with flanged joints. Other types of rubber are available on special order.
Clean flange faces and faced pipe ends thoroughly prior to installation. Do not use joint or gasket compounds with Toruseal® gaskets (assemble joints dry).
In addition to normal flanged piping, AMERICAN Toruseal® gaskets are required for use with suspended joints in specially designed long-span installations (i.e., spans involving 2 or 3 lengths of pipe). See Specials for details.
For use with standard flange bolts. Holes match AWWA C110, C111, and C115 flange drilling. They also match certain flange drilling classes of AWWA C207 and ANSI B16.1 and B16.42 flanges.