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2015 Edition, June 7, 2015

Complete Document

Air Valve and Vent Inflow Preventer Assemblies for Potable Water Distribution System and Storage Facilities

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Product Details:

  • Revision: 2015 Edition, June 7, 2015
  • Published Date: June 7, 2015
  • Status: Active, Most Current
  • Document Language: English
  • Published By: American Water Works Association (AWWA)
  • Page Count: 28
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

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).


The purpose of this standard is to provide the minimum requirements for inflow preventer assemblies including material, design, inspection, testing, marking, handling, and packaging for shipment.
Standard Methods for the Examination of Water and Wastewater