UL 260
Standard for Dry Pipe and Deluge Valves for Fire-Protection Service

DETAILS
Edition Number:7SCC Approved:--
Edition Date:2004-03-17DOD Approved: --
Price Code:AANSI Approved: --
Type:ulstd

  • SCOPE

    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 following standards:

    a)     Standard for Low-, Medium-, and High-Expansion Foam, NFPA 11.

    b)     Standard for the Installation of Sprinkler Systems, NFPA 13.

    c)     Standard for the Installation of Standpipe and Hose Systems, NFPA 14.

    d)     Standard for Water Spray Fixed Systems for Fire Protection, NFPA 15

    e)     Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems, NFPA 16


    1.3 revised July 6, 2007

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Glossary
        • CONSTRUCTION
          • 6 Sizes
          • 7 Rated Pressure
          • 8 Operating Mechanisms
            • 8.1 Differential type dry pipe valves
            • 8.2 Latched-clapper type dry pipe valves
            • 8.3 Deluge valves
          • 9 Bodies and Covers
          • 10 Valve Mechanisms
            • 10.1 General
            • 10.2 Clapper supports
          • 11 Anti-Reseat Latches
          • 12 Clapper Stops
          • 13 Clapper Rings and Seat Rings
          • 14 Clearances
          • 15 Valve Settings
          • 16 Valve Gags
          • 17 Priming Water
          • 18 Intermediate Chamber Automatic Drain Valves
          • 19 Priming Water
        • PERFORMANCE
          • 20 General
          • 21 Metallic Materials Test
          • 22 Nonmetallic Materials Tests
            • 22.1 General
            • 22.2 Plastic parts
            • 22.3 Elastomeric parts (except gaskets)
          • 23 Adhesion Test for Resilient Seat Material
          • 24 Installation Assembly Test
          • 25 Servicing Test for Valves Without Handhole Openings
          • 26 Operation Tests
            • 26.1 General valve types
            • 26.2 Differential type dry pipe valves
            • 26.3 Latched-clapper type dry pipe valves
            • 26.4 Alarm devices
            • 26.5 Supplementary tripping devices
            • 26.6 Normal
            • 26.7 Reseating test
            • 26.8 Wet pilot sprinkler line limitations tests
          • 27 Deformation Test
            • 27.1 Valves with mechanical latching mechanisms
            • 27.2 Valves without mechanical latching mechanisms
          • 28 Hydraulic Friction Loss Test
          • 29 Body Leakage Test
          • 30 Strength of Body Test
          • 31 Automatic Drain Valves
        • MANUFACTURING AND PRODUCTION TESTS
          • 32 General
        • MARKING
          • 33 General
        • INSTRUCTIONS
          • 34 Installation Instructions and Trim Drawings
    • APPENDIX A – METHOD OF CALCULATION FOR WET PILOT LINE LENGTH
    • APPENDIX B – CLEARANCES MEASUREMENT REFERENCE