Please note: All interim revisions for this edition available at time of your purchase will be included.



This new edition of ANSI/UL 260 is a periodic re-issuance to ensure that UL's Standards remain up-to-date with regard to format and editorial issues such as renumbering, paginating, correction of editorial errors, correction of cross-references and updating titles of referenced Standards. No changes in requirements are involved.

1 Scope

1.1 These requirements cover valve equipment intended for installation in piping systems to supply water automatically to dry pipe, deluge, and preaction sprinkler systems for fire-protection service.

1.2 Valves covered by these requirements may be a differential type, latched-clapper type, low-differential type, or a combination of these types.

1.3 The valves covered by these requirements are intended for installation and use in accordance with the Standard for the Installation of Sprinkler Systems, NFPA 13; and the Standard for Water Spray Fixed Systems for Fire Protection, NFPA 15.