This standard describes cold-water fluidic-oscillator meters with brass main cases in sizes 1/2 in. (13 mm) through 2 in. (50 mm) and the materials and workmanship employed in their fabrication. The bases for volume measurement is a transducer element that senses and utilizes fluidic oscillation rather than a moving measurement element, as required in cold-water volumetric meters.

Major revisions to this edition of C713 include:

1. Information is provided on lead content criteria and recent federal legislation revising the definition of "lead free" in the Safe Drinking Water Act.
2. New information about the meter's use for residential fire sprinkler applications has been added.
3. The definition of manufacturer has been changed.
4. The upper limit on the meter register has been changed from 101 percent to 101.5 percent of the water that actually passes through the meter.
5. The materials have been updated in response to legislation revising the definition of "lead free" in the Safe Drinking Water Act.
6. The section on registers has been updated to include more comprehensive language and greater details on requirements for electronic display registers.