Most recent
UL 1726 Ed. 4-2024
Automatic Drain Valves for Standpipe Systems - Published Date: December 3, 2024
This new Fourth Edition of UL 1726 dated December 3, 2024 includes the following changes: – Add 300 series stainless steel to list of corrosion resistant materials, 5.1; – Add new Metallic Materials section, Section 6; – Update wording of the Leakage Test, 11.1 and 11.2; – Change hydrostatic pressure requirement to four times rated working pressure, 12.1 and 12.2; – Add new section Installation Instructions; and – Editorial revisions and formatting updates throughout this Standard.
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