AWWA C507-11 Ball Valves, 6 in. through 60 in. (150 mm through 1,500 mm)
This standard covers gray-iron, ductile-iron, and cast-steel, flanged-end, low-leakage, shaft- or trunnion-mounted, full-port, double- and single-seated ball valves for pressures up to 150 psi (1,050 kPa) in sizes 6-in. through 60-in. (150-mm through 1,500-mm) diameter and pressures up to 300 psi (2,100 kPa) in sizes from 6-in. through 48-in. (150-mm through 1,200-mm) diameter for use in water, wastewater, and reclaimed water systems having water with a pH greater than 6 and less than 12 and with temperatures greater than 32ºF (0ºC) and less than 125ºF (52ºC). Design fluid velocity – the valve assembly shall be structurally suitable for a port fluid velocity of 35 ft/sec (10.7 m/sec) at design pressure and shall be within the allowable stresses noted in Sec. 4.3.1. Pressure class and rated/design pressure – the classes of valves discussed in this standard shall be designed for the maximum rated pressure. Rated pressure is defined as the design pressure at 100ºF (38ºC). The major changes made in this revision of the standard include the following: added sizes 54 in. and 60 in. (1,350 mm and 1,500 mm); added paragraph 25 in Section III regarding the consideration of requiring pulls less than 80 lb (356 N) for handwheels and chainwheels; added paragraphs 1.4 on Valve Construction and 1.5 on Description of Operation to Sec. 1, General; revised Table 1 in Sec. 4.3, Port diameter and minimum body shell thickness, to require that the wall thicknesses of ductile-iron construction be the same wall thicknesses as cast steel construction; added paragraph 4.3.9.4 on design methodology for the valve shafts; revised the metal-seat leakage requirements in Sec. 5.1.2.3; revised coating requirements in Sec. 4.4.3; added actuator pressure rating and actuator flow rating to nameplate requirements; and, added Appendix A on Installation, Operation, and Maintenance of Ball Valves.
