scope:

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.

Purpose

The purpose of this standard is to provide purchasers, manufacturers, and suppliers with the minimum requirements for cold-water meters-displacement type, bronze main case, including materials and design.