ASSE-1012 › Complete Document History
Performance Requirements for Backflow Preventers With an Intermediate Atmospheric Vent

Complete Current Edition:
   2021 EDITION -  Intermediate Atmospheric Vent - Nov. 1, 2021

Obsolete Revision Information:
   2009 EDITION - Performance Requirements for Backflow Preventers With an Intermediate Atmospheric Vent - March 1, 2009
   DOD ADOPTION 1 - FYI ONLY: DOD ADOPTED - July 28, 2004
   2002 EDITION - BACKFLOW PREVENTER - Jan. 1, 2002
   1993 EDITION - BACKFLOW PREVENTER WITH INTERM - Sept. 1, 1993