Summary of Topics s2443_4_sum.htmlSummary of Topics
This new edition of ANSI/UL 2443, dated September 7, 2023, includes the following changes in requirements:
– Editorial changes; Section 4
– Maximum K-factor of Sprinkler Intended to be Attached to a Flexible Hose Based Upon the Inside Diameter of the Hose; 6.4 and Table 6.1
– New Method for Determining Flexible Hose Pressure Loss and Referencing the Pressure Losses in the Manufacturer’s Instructions; Section 12
– Update to Marking Requirements; 24.1, 24.3, and 25.1
– Electronic Installation Instructions; 25.1