C700-71: AWWA Standard for Cold-Water Meters--Displacement Type (PDF)
SKU: STC_0074305-PDF
This standard covers the various types and classes of cold water displacement meters in sizes 5/8 in. through 6 in., and the materials and workmanship employed in their fabrication. The displacement meters covered, known as nutating-disc or oscillating-piston meters, are positive in action, in that the pistons and discs displace or carry over a fixed quantity of water for each nutation or oscillation when operated under positive pressure.
Description
Major revisions in this edition of the standard include the following: recommended maximum rates of flow for continuous operation have been provided in Table 1; the use of synthetic polymers for some meter parts has been provided as an alternative for other materials; and, many sections have been rewritten for clarification.