AWWA Comment Period on ANSI/AWWA C503 - Wet-Barrel Fire Hydrants
August 3, 2018

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 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 closed on 9/17/18.

Send comments to:
Emily Meek
303.347.6192 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 Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.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.

This standard pertains to the various types and classes of wet-barrel fire hydrants for use in fire-protection service in areas where the climate is mild and freezing temperatures do not occur. A wet-barrel hydrant has one or more valve openings above the ground line and, under normal operating conditions, the entire interior of the hydrant is subjected to water pressure at all times. Each outlet nozzle has an independent, compression-type valve (i.e., working with or against the pressure) that controls discharge from that particular outlet.

1.1.1 Exceptions. This standard does not pertain to dry-barrel fire hydrants. (For such hydrants, see ANSI/AWWA C502.) References to the setting of hydrants are not included in ANSI/AWWA C503. For installation information, see ANSI/AWWA C600 and AWWA Manual M17.

Hydrants of steel-pipe risers and angle-valve construction are not covered in this standard.

Major changes made to the standard in this revision include the following:
1. C503 was revised to bring the text into alignment with C502.
2. An advisory statement was added in the Foreword (Sec. II.D) regarding chlorine and chloramine degradation of elastomers.
3. Added definition for Potable water in Section 3
4. Table 1 was revised to bring it into alignment with the format of Table 1 in C502.