These requirements cover indicator posts, including wall and underground types, for use in operating valves of the inside-srew pattern and for indicating the position of the gates in such valves. Indicator posts are primarily intended for use with valves controlling water supplies to automatic sprinkler equipment, standpipes, etc.
UL 789 BULLETIN-2007 history
2018UL 789 BULLETIN-2018 UL Standard for Safety Indicator Posts for Fire-Protection Service (COMMENTS DUE: April 23@ 2018)
1970UL 789-2018 Indicator posts for fire-protection service
2017UL 789 BULLETIN-2017 UL Standard for Safety Indicator Posts for Fire-Protection Service (COMMENTS DUE: May 15@ 2017)
2012UL 789 BULLETIN-2012 UL Standard for Safety Indicator Posts for Fire-Protection Service (COMMENTS DUE: December 24@ 2012)
2008UL 789 BULLETIN-2008 UL Standard for Safety Indicator Posts for Fire-Protection Service (COMMENTS DUE: July 07@ 2008)
2007UL 789 BULLETIN-2007 UL Standard for Safety Indicator Posts for Fire-Protection Service
2004UL 789-2004 UL Standard for Safety Indicator Posts for Fire-Protection Service (Tenth Edition; Reprint with Revisions Through and Including February 08, 2013)