AWWA COMMENT PERIOD ON AWWA C514, Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities

AWWA COMMENT PERIOD ON AWWA C514, Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities
March 27, 2026

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 May 11, 2026.

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 Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.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 1-in. (25-mm) through 12-in. (300-mm) air valve and vent inflow preventer assemblies designed for use on the outlet of potable water distribution system air valves furnished in accordance with ANSI/AWWA C512 or storage facility vent pipes. The assemblies shall have a minimum design pressure of 25 psig (172.4 kPa [gauge]) and prevent the entry of contaminated water between 0 and 57.7 ft (17.6 m) of submergence at liquid temperatures ranging from 32°F (0°C) to a maximum of 125°F (52°C).

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

1. Removed references to ASTM D747 since it has been withdrawn without replacement by ASTM (Section 2 and Section 3, item 9).
2. Removed references to ASTM F593 and separate requirement for stainless steel bolts (Section 2 and Sec. 4.2.2.5).
3. Where a metric version of an ASTM referenced standard exists but was not included, the “M” version of the designation was added throughout (e.g., A240/A240M).
4. Expanded stainless steel types and grades, including addition of the low-carbon version of the cast materials (Sec. 4.2.2.4).
5. Added qualification criteria to the General Requirements section for welding, including Section IX, Part A of the ASME Boiler and Pressure Vessel Code, AWS D1.1/D1.1M, or AWS D1.6/D1.6M (Section 2 and Sec. 4.4.1).
6. Clarified that the shell test is to be conducted on each inflow preventer assembly (Sec. 5.1.1).
7. Clarified purchaser options in cases of noncompliance (Sec. 5.3).
8. Added requirement that the minimum after-delivery storage conditions be readily available to the purchaser (Sec. 6.2).
9. Clarified manufacturer sample requirements for laboratory testing and reporting (Sec. 6.3.1.1 and Sec. 6.3.1.2).
10. Added clarifications to the Installation and Field Testing sections of Appendix A.