UL 193
Standard for Alarm Valves for Fire-Protection Service

DETAILS
Edition Number:11SCC Approved:--
Edition Date:2016-02-26DOD Approved: --
Price Code:BANSI Approved: --
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover alarm valves for use in automatic wet-pipe sprinkler systems for fire-protection service. Alarm valves covered by these requirements are of either the variable- or constant-pressure type and are of the swing-check pattern. Ordinarily, variable-pressure alarm valves are acceptable for constant-pressure service without alteration; however, in some designs, that part of the device having to do with the delaying of alarms may be omitted.

    1.2 Alarm valves covered by these requirements include the sizes 1 – 12 inches, inclusive.

    1.3 Alarm valves covered by these requirements are intended for installation and use in accordance with the Standard for the Installation of Sprinkler Systems, NFPA 13 .

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 Units of Measurement
          • 3 Undated References
          • 4 Components
          • 5 Glossary
        • ASSEMBLY
          • 6 General
          • 7 Sizes
          • 8 Working Pressures
          • 9 Positions
          • 10 Bodies and Covers
          • 11 Valve Mechanisms
            • 11.1 General
            • 11.2 Clapper supports
          • 12 Clapper Stops
          • 13 Clapper Rings and Seat Rings
          • 14 Nonmetallic Materials
          • 15 Clearances
          • 16 Auxiliary Checks
          • 17 Retarding Chambers
          • 18 Valve Gags
        • PERFORMANCE
          • 19 General
          • 20 Metallic Materials Tests
          • 21 Nonmetallic Materials Tests
            • 21.1 General
            • 21.2 Plastic parts
            • 21.3 Elastomeric parts (except gaskets)
          • 22 Adhesion Test for Resilient Seat Material
          • 23 Installation Assembly Test
          • 24 Servicing Test for Valves Without Handhole Openings
          • 25 Positiveness of Response and Transmission Test
          • 26 Hydraulic Friction Loss Test
          • 27 Leakage Test
          • 28 Strength of Body Test
          • 29 Operational Tests
            • 29.1 Sensitiveness
            • 29.2 Retarding factor
        • MANUFACTURING AND PRODUCTION TESTS
          • 30 General
        • MARKING
          • 31 General
        • INSTALLATION INSTRUCTIONS
          • 32 Installation Instructions and Trim Drawings