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AWWA C700-02
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AWWA C700-02 AWWA Standard for Cold-Water Meters -- Displacement Type, Bronze Main Case, Includes Erratum
standard by American Water Works Association, 01/01/2003
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Full Description
This standard describes the various types and classes of cold-water displacement meters with bronze main cases, in sizes 1/2 in. (13 mm) through 2 in. (50 mm), and the materials and workmanship employed in their fabrication. The displacement meters described, known as nutating-disc or oscillating-piston meters, are positive in action because the pistons and discs displace or carry over a fixed quantity of water for each nutation or oscillation when operated under positive pressure. Major revisions made to the standard in this edition include the following:a section on fire flow service has been added to the foreword (Sec. II.A); updated AWWA materials language has been added (Sec. III.A.3 and Sec. 4.1); a note on test details for 1/2 in. and 1/2 in. x 3/4 in. meters has been added (Sec. B.3.3); and, the relaxation for test intervals for magnetic couplings has been removed(Sec. B.6.1).