UL 1091
Standard for Butterfly Valves for Fire-Protection Service

DETAILS
Edition Number:6SCC Approved:--
Edition Date:2004-06-03DOD Approved: --
Price Code:AANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover butterfly valves intended for use in piping systems supplying water for fire-protection service.

    1.2 The valves covered by these requirements are intended for installation and use in accordance with the Standards for:

    a)     Low, Medium and High Expansion Foam, NFPA 11;

    b)     Installation of Sprinkler Systems, NFPA 13;

    c)     Installation of Standpipe and Hose Systems, NFPA 14;

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

    e)     Foam-Water Sprinkler and Foam-Water Spray Systems, NFPA 16;

    f)     Installation of Stationary Pumps for Fire Protection, NFPA 20;

    g)     Water Tanks for Private Fire Protection, NFPA 22; and

    h)     Installation of Private Fire Service Mains and Their Appurtenances, NFPA 24.

  • 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
          • 4A Glossary
        • CONSTRUCTION
          • 5 Sizes
          • 6 Working Pressures
          • 7 Discs
          • 8 Seats
          • 9 Bodies
          • 10 Shafts
          • 11 Brass Materials
          • 12 Actuator Assemblies
          • 13 Electrically Operated Valve Monitor Switches
        • PERFORMANCE
          • 14 General
          • 15 Tests on Organic Coating Materials for Seating Surfaces
            • 15.1 General
            • 15.2 Air oven exposure
            • 15.3 Water immersion
            • 15.4 Sodium chloride immersion
            • 15.5 Potassium biphthalate immersion
            • 15.6 Sodium carbonate immersion
            • 15.7 Impact test
          • 16 Nonmetallic Materials Test
            • 16.1 Plastic or other nonmetallic parts (excluding rubber, synthetic elastomers and coatings)
            • 16.2 Elastomeric parts (except gaskets)
          • 17 Leakage Test
          • 18 Hydrostatic Test
          • 19 Torque Tests
            • 19.1 All valves
            • 19.2 Valves with integral indicating and operating arrangements
            • 19.3 Valve with wrench nut actuator
          • 20 Operation Tests
          • 21 Hydraulic Friction Loss Test
          • 22 10-Day Moist Ammonia Air Stress Cracking Test
          • 23 Cycling Test
          • 24 Dezincification Test of Brass Parts
            • 24.1 General
            • 24.2 Reagent
            • 24.3 Samples
            • 24.4 Method
        • MANUFACTURING AND PRODUCTION TESTS
          • 25 General
        • MARKING
          • 26 General
        • INSTRUCTIONS
          • 27 Installation Instructions
    • Appendix A