AWWA Articles

AWWA Comment Period on ANSI/AWWA C710-XX – Cold Water Meters - Displacement Type, Plastic Main Case

AWWA Comment Period on ANSI/AWWA C710-XX – Cold Water Meters - Displacement Type, Plastic Main Case
November 29, 2019

AWWA solicits public comments on all proposed new AWWA Standards, and on all proposed revisions, reaffirmations, or withdrawals of existing AWWA Standards. The referenced standards project is being considered for approval and the publication of this notice begins the 45-day public comment period for AWWA and ANSI. An electronic public review copy of the proposed standard can be obtained for review during the comment period by emailing ETS Support. Comments must be submitted in writing to the AWWA contact listed below no later than the last day of the comment period specified herein. Such comments shall be specific to the section(s) of the standard under review and include sufficient detail so as to enable the reader to understand the commenter's position, concerns and suggested alternative language, if appropriate.

AWWA Comment Period closes on January 13, 2020.

Send comments to:
Frank Kurtz
303.347.6221 phone
303.795.7603 fax

The review copy will be edited for publication and may also be revised as appropriate based on any comments received during the public comment period. Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.

Final publication of the standard may take several months. When it is available, a notice will be published in the official notice section of Journal - American Water Works Association. The standard becomes an effective AWWA standard on the first day of the month following such publication in Journal - American Water Works Association

SCOPE
This standard describes the various types and classes of cold-water displacement meters with metal alloy main cases, in sizes ½ 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.

MAJOR REVISIONS
Major changes made to the standard in this edition include the following:
1. Guidance on selection of materials in terms of chlorine and chloramine degradation of elastomers has been provided in the foreword (Sec. II.B).
2. The requirements for register accuracy at the minimum flow rate has been modified (Sec.4.2.8.2).
3. Reference to ANSI/AWWA C706 on Direct Reading, Remote Registration Systems for Cold Water Meters has been removed (Sec. 4.3.3.4). (ANSI/AWWA C706 was withdrawn as an AWWA standard in 2015.)
4. Provisions for meter marking have been moved from Sec. 6.1 to Sec. 4.4. (The content of the requirements is unchanged.)


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