AWWA C510:1997

The major revisions in this edition of ANSI/AWWA C510-97 include the following: the format has been changed to AWWA standard style; definitions for cosmetic and structural defects have been added (Sec.3); the operating temperature range for cold-water double check valve backflow prevention assemblies has been increased (Sec. 1.1); Table 1, Parameters for Double Check Valve Backflow Prevention Assembly, has been expanded to include sizes 1/4 in. (6 mm), 3/8 in. (9 mm), 1/2 in. (12 mm), and 12 in. (305 mm); the section on connections has been expanded to include grooved and shouldered joints (Sec. 4.3.1.7); the section on test cocks has been expanded to include requirements on test connections (Sec. 4.3.1.8); a new section on operation at rated temperature and pressure has been added (Sec. 4.3.2.2); Table 2, Thermal Test Minimum Flow Rates has been added; and, a new section on casting requirements has been added (Sec. 4.4.4).