D.C. Mun. Regs. tit. 25, r. 25-A2410

Current through Register Vol. 71, No. 52, December 27, 2024

Rule 25-A2410 - NUMBERS AND CAPACITIES - BACKFLOW PREVENTION DEVICE, CARBONATOR

2410.1

A dual check valve with an intermediate vent preceded by a screen of not less than one hundred (100) mesh to twenty-five and four millimeters (25.4 mm) one hundred (100) mesh to one inch (1 in.) shall be installed upstream from a carbonating device and downstream from any copper in the water supply line, if not provided with an air gap as specified in § 2403.

2410.2

A dual check valve attached to the carbonator need not be of the vented type if an air gap or vented backflow prevention device has been otherwise provided as specified in § 2410.1.

D.C. Mun. Regs. tit. 25, r. 25-A2410

Final Rulemaking published at 50 DCR 4394 (June 6, 2003); as amended by Final Rulemaking published at 59 DCR 13690 (November 30, 2012)

Authority: Sections 4 and 10 of An Act Relating to the adulteration of foods and drugs in the District of Columbia, approved February 17, 1898 (30 Stat. 246: D.C. Official Code §§ 48-104 and 48-110 (2009 Repl.)); Section 7 of An Act Making Appropriations to provide for the expenses for the government of the District of Columbia for the fiscal year ending June thirtieth, nineteen hundred and three, and for other purposes (32 Stat.627: D.C. Official Code § 47-2834(a)(1), (a)(2), and (b) (2005 Repl.)); and Mayor's Order 98-139, dated August 20, 1998, and Mayor's Order 2002-103, dated June 18, 2002.