AWWA C712-10 Cold-Water Meters--Singlejet Type (PDF)
SKU: STC_0071992-PDF
This standard describes the various types and classes of cold-water, singlejet meters in sizes 5/8 in. (15 mm) through 6 in. (150 mm) for water utilities' customer service and the materials and workmanship employed in their fabrication. These meters register by recording the revolutions of a rotor powered by the force of flowing water striking its blades.
Description
The major revisions to the standard in this edition include the following: reference to the discontinued ASTM D2135 has been removed from the references section (Section 2), and from the materials section for measuring rotors (Sec. 4.1.5) and rotor spindles (Sec. 4.1.6); definitions for electronic display and mechanical display have been added (Section 3); the section on registers has been expanded to describe electronic display registers (Sec. 4.3.6 and subsections); the scope of the standard has been broadened to include meter sizes 5/8 in. (15 mm) through 6 in. (150 mm); a new section on Fire Flow, Sec. II.A, has been added to the foreword; Table 1, Operating Characteristics, has been modified, and now includes meter sizes 5/8 in. to 1 in. (15 mm to 25 mm), and a footnote on "Recommended Maximum Rates for Continuous Duty" has also been added; and, the minimum thickness values provided in Table 3 have been modified.