Standard 1478A, Edition 1
UL 1478A

Pressure Relief Valves for Sprinkler Systems

UL Standard Edition 1 Published Date: May 20, 2013 Last Revision: June 17, 2022 ANSI Approved: June 17, 2022

$402.00-$998.00

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June 17, 2022 Redline Revision
August 04, 2017 Revision
June 05, 2013 Revision
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August 23, 2024
April 29, 2022
June 16, 2017
October 12, 2012
December 19, 2011
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