This standard describes the various types and classes of cold-water displacement meters with plastic main cases, in sizes 1/2 in. (13 mm) through 1 in. (25 mm), for water utility customer service, 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.
ANSI/AWWA C710-2009 history
2020ANSI/AWWA C710-2020 Cold-Water Meters— Displacement Type, Plastic Main Case
2009ANSI/AWWA C710-2009 Cold-Water Meters - Displacement Type, Plastic Main Case
2002ANSI/AWWA C710-2002 Cold Water Meters - Displacement Type - Plastic Main Case