AWWA COMMENT PERIOD ON AWWA C508, Swing-Check Valves for Waterworks Service, 2-In. Through 48-In. (50-mm Through 1,200-mm) NPS

AWWA COMMENT PERIOD ON AWWA C508, Swing-Check Valves for Waterworks Service, 2-In. Through 48-In. (50-mm Through 1,200-mm) NPS

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 (ETSsupport@awwa.org). 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  December 9, 2024.

Send comments to:
Amanda Dail, ADail@awwa.org
303.734.3466 phone

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 Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.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 only iron-body swing-check valves, 2-in. through 48-in. (50-mm through 1,200-mm) NPS, with mechanical-joint or flanged ends that are installed in approximately level settings in source water, potable water, wastewater, and reclaimed water systems having a pH range from 6 to 12 and a temperature range from 33°F to 125°F (0.6°C to 52°C). The manufacturer should be consulted for special conditions. Check-valve sizes described in this standard are 2, 2½, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24, 30, 36, 42, and 48-in. (50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 750, 900, 1,050, and 1,200 mm) NPS. Sizes refer to the nominal diameter of the waterway through the inlet and outlet connections and the seat.

MAJOR REVISIONS
Major revisions made to the standard in this edition include the following:

• Clarified that this standard is intentionally silent on design and construction of assisted closure features (Foreword II. Item 1), removed the word “unassisted” from the scope (Sec. 1.1), and added a new section for features not covered (1.1.6).
• Clarified conditions of use in the Scope (Sec. 1.1) and pH range in the Chemical section (1.1.5.1).
• Added new definitions for potable water, raw water, reclaimed water, source water, and wastewater (Sec. 3).
• Added option for stainless steel castings (4.3.2.3).
• Added option for stainless steel side plugs (4.4.10).