General Notes Relating to 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 AWWA C110 and C153.

3. Weights of accessories are not included in weights of fittings shown in tables unless specifically noted. For weights of accessories, see Pipe Joints (Section 2) or Restrained Joints (Section 9).

4. For allowable joint deflection of Fastite, Flex-Ring, and Lok-Ring fitting joints, see Table 4-3.

5. All pressure ratings are for water service.

6. Some fittings are available with body metal thickness and weights other than shown in the tables. Some fittings are available in different sizes and with different size combinations than shown. All sizes and body metal thicknesses listed may not be available due to equipment changes. Check AMERICAN regarding special requirements.

7. See Specials (Section 7) for AMERICAN Specials.

8. Fittings may be furnished by AMERICAN which are manufactured by others. Any such fittings will normally be manufactured in accordance with appropriate ANSI/AWWA Standards.

9. The 250 psi rating for 54"-64" fittings is an AMERICAN Standard, based on performance testing. 54"-64" fittings are rated only 150 psi in AWWA C153, although that standard provides for higher pressure ratings by the manufacturer (AMERICAN).

10. Center-to-socket dimensions, wall thicknesses, and weights may vary from those shown in the following tables depending on foundry practice.

11. The locations of taps, bosses, bases, or other special options when available on fittings shall be specified by the Purchaser as shown in Flanged Fittings/Tapped Holes and Sequence of Openings (page 6-5) for similar body type fittings. Likewise, end types and end sizes used in descriptions must be specified in numbering sequence shown in Flanged Fittings/Tapped Holes and Sequence of Openings (pages 6-5 and 6-6), and the illustrations in this section.

12. Lateral or wye branch fittings with Fastite, Flex-Ring, and Lok-Ring end connections are not shown in this section. For small-diameter varied angle lateral and tangential connections to larger mains, shop-welded outlet pipes are normally preferable and can be furnished with all joining connections as noted in Specials (Section 7). For larger or full-opening requirements, some 45º lateral and true wye configurations can also be furnished with these push-on end connections. (Contact AMERICAN for availability.) These wye fittings are special, and for economy and availability, alternative combinations of other standard fittings may be preferable in some cases. (See alternatives as depicted in Section 5 and Section 6, etc.)

13. AMERICAN Flex-Ring fittings will generally work as push-on unrestrained fittings as well (without restraint rings and/or spigot weldments), as long as suitable external restraint (thrust blocks, etc.) is applied. 24"- 48" Flex-Ring and Fastite C153 fittings have the same appearance.