UL 393
Standard for Indicating Pressure Gauges for Fire-Protection Service

DETAILS
Edition Number:8SCC Approved:--
Edition Date:2005-03-17DOD Approved: --
Price Code:DANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover indicating pressure gauges of the elastic element type intended for use with sprinkler or standpipe equipment for fire-protection service.

    1.2 These requirements cover gauges of trade sizes 3-1/2 to 4-1/2 inches (90 to 115 mm), inclusive.

    1.3 The gauges covered by these requirements are intended for installation and use according to the following Standards of the National Fire Protection Association:

    a)     Standard for Installation of Sprinkler Systems, NFPA 13;

    b)     Standard for Installation of Standpipe and Hose Systems, NFPA 14;

    c)     Standard for Installation of Private Fire Service Mains and Their Appurtenances, NFPA 24; and

    d)     Standard for Installation of Stationary Fire Pumps for Fire Protection, NFPA 20.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
        • CONSTRUCTION
          • 5 General
          • 6 Sizes
          • 7 Dials
          • 8 Pointers
          • 9 Windows
          • 10 Elastic Elements
          • 11 Materials
          • 12 Pointers
        • PERFORMANCE
          • 13 General
          • 14 Nonmetallic Components
            • 14.1 General
            • 14.2 Light and water test
            • 14.3 Air-oven aging test
            • 14.4 Low temperature exposure
          • 15 Accuracy Test
          • 16 Operation Test
          • 17 Vibration Test
          • 18 Excess Pressure Test
          • 19 Hydrostatic Strength Test
          • 20 Falling Ball Impact Test
          • 21 Window Impact Strength Test
        • MARKING
          • 22 General