AMERICAN Ductile Iron Flex-Ring ® and Lok-Ring ® Fittings
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Ductile Iron ® ® Flex-Ring and Lok-Ring Fittings

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings The principal standards covering fittings are ANSI/AWWA C110/A21.10 and ANSI/AWWA C153/A21.53. The principal standard covering joints is ANSI/AWWA C111/A21.11. These and other standards are referenced throughout this section by the full ANSI/AWWA designation or by only the AWWA numbering, such as AWWA C110 or C153. AMERICAN furnishes a line of 16”– 48” Flex-Ring and 54”–64” Lok-Ring fittings meeting the applicable requirements of AWWA C110 or C153, depending on diameter and joint. These fittings all employ the standard Fastite or...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings General Notes Relating to Flex-Ring and Lok-Ring Fittings 1. Fittings in the following tables with the heading “ANSI/AWWA C153/ A21.53” are essentially as specified in that standard. Fittings in tables with the heading “AMERICAN Standard” are either not included in the ANSI/AWWA standard or vary therefrom in weights, dimensions, and/or joints. 2. Fittings are manufactured of ductile iron qualified as per grade 70-50-05 (minimum tensile strength: 70,000 psi; minimum yield strength: 50,000 psi; minimum elongation: 5%) as specified in...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53 and AMERICAN Standard Flex-Ring and Lok-Ring Fittings Joint Dimensions Table No. 4-1 Dimensions in Inches B Socket Depth Flex-Ring C Socket Depth Lok-Ring *Dimensions subject to change at our option. For Fastite pipe dimensions, see Section 2. For Flex-Ring and Lok-Ring pipe dimensions, see Section 9.

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53 and AMERICAN Standard Flex-Ring End and Lok-Ring End Standard Dimensions 54”-64” Lok-Ring End B Flex-Ring Minimum Gauge Length in. C Lok-Ring Minimum Gauge Length in.

Maximum Allowable Separation Push-On Fitting Joints t Maximum allowable separation, “S”, in a push-on fitting joint is approximately equal to the median pipe diameter in inches times the sine of the deflection angle. This is provided for information only and should not be used to determine precise joint deflection. Allowable Deflection Push-On Fitting Joints Table No. 4-3 Size in. Flex-RingFastite Lok-Ring Deflection Angle (Deg.)

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53* and AMERICAN Standard 90° Bends (1/4th) Flex-Ring Bell-Bell** Lok-Ring Bell-Bell** *AWWA C153 configurations with shorter center-to-socket dimensions, etc. may be furnished in some cases in the 18”–20” size range. Contact AMERICAN if dimensions are critical. **30” and larger Flex-Ring and Lok-Ring 90° Bends may be furnished with Flex-Ring Ends or Lok-Ring Ends. See Table No. 4-2. † Higher pressure ratings are available on special applications. Pressure ratings may be limited below the values shown by the pressure...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53* and AMERICAN Standard 45° Bends (1/8th) Flex-Ring Bell-Bell** Lok-Ring Bell-Bell** *AWWA C153 configurations with shorter center-to-socket dimensions, etc., may be furnished in some cases in the 18”–20” size range. Contact AMERICAN if dimensions are critical. **30 and larger Flex-Ring and Lok-Ring 45° Bends may be furnished with Flex-Ring Ends or Lok-Ring Ends. See Table No. 4-2. † Higher pressure ratings are available on special applications. Based on performance testing per AWWA C153, AMERICAN can rate 30”–48”...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53* and AMERICAN Standard 22 1/2° Bends (1/16th) Flex-Ring Bell-Bell** Lok-Ring Bell-Bell** *AWWA C153 configurations with shorter center-to-socket dimensions, etc., may be furnished in some cases in the 18"–20" size range. Contact AMERICAN if dimensions are critical. **30" and larger Flex-Ring and Lok-Ring 22 1/2° bends may be furnished with Flex-Ring Ends or Lok-Ring Ends. See Table No. 4-2. † Higher pressure ratings are available on special applications. Based on performance testing per AWWA C153, AMERICAN can...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53* and AMERICAN Standard 11 1/4° Bends (1/32nd) Flex-Ring Bell-Bell** Lok-Ring Bell-Bell** *AWWA C153 configurations with shorter center-to-socket dimensions, etc., may be furnished in some cases in the 18”–20” size range. Contact AMERICAN if dimensions are critical. **30" and larger Flex-Ring and Lok-Ring 11 1/4° bends may be furnished with Flex-Ring Ends or Lok-Ring Ends. See Table No. 4-2. † Higher pressure ratings are available on special applications. Based on performance testing per AWWA C153, AMERICAN can...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53* and AMERICAN Standard Tees and Crosses Table No. 4-8 Dimensions in Inches Tee Cross **Flex- **Lok- **Flex- **LokRing Ring Ring Ring All Bell All Bell All Bell All Bell 16" and 24"–64" fittings are generally per AWWA C153. AWWA C153 or C110 configurations may be furnished in some sizes in the 16"–48" size range. Contact AMERICAN. While AWWA C153 shows 54"–64" fittings with 150 psi ratings, AMERICAN rates many 54"–64" fittings 250 psi as AMERICAN Standard based on performance testing. **30" and larger Flex-Ring and...

AMERICAN Ductile Iron Flex-Ring® and Lok-Ring® Fittings ANSI/AWWA C153/A21.53* and AMERICAN Standard Tees and Crosses Table No. 4-8 —Continued Dimensions in Inches Tee Cross **Flex- **Lok- **Flex- **LokRing Ring Ring Ring All Bell All Bell All Bell All Bell 16" and 24"–64" fittings are generally per AWWA C153. AWWA C153 or C110 configurations may be furnished in some sizes in the 16"–48" size range. Contact AMERICAN. While AWWA C153 shows 54"–64" fittings with 150 psi ratings, AMERICAN rates many 54"–64" fittings 250 psi as AMERICAN Standard based on performance testing. **30" and larger...