UL 260

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

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

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

A product that contains features, characteristics, components, materials, or systems new or different from those in use when the Standard was developed, and that involves a risk of fire, electric shock, or injury to persons, shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to mai ntain the level of safety for the user of the product as originally anticipated by the intent of this Standard.