UL-1478 Complete Document History
Standard for Fire Pump Relief Valves

Complete Current Edition:
   5TH EDITION - FIRE PUMP RELIEF VALVES - March 17, 2023

Obsolete Revision Information:
   CHANGE 4/2018 - REVISION CHANGE - CODE D - April 12, 2018
   CHANGE 2/2013 - REVISION CHANGE - CODE D - Feb. 2, 2013
   CHANGE 10/08 - REVISION CHANGE - CODE D - Oct. 30, 2008
   4TH EDITION - FIRE PUMP RELIEF VALVES - May 13, 2004
   3RD EDITION - FIRE PUMP RELIEF VALVES - July 26, 1995
   1989 EDITION - FIRE PUMP RELIEF VALVES - April 3, 1989