UL 1739
Standard for Pilot-Operated Pressure-Control Valves for Fire-Protection Service

DETAILS
Edition Number:6SCC Approved:--
Edition Date:2017-04-28DOD Approved: --
Price Code:AANSI Approved: 2017-04-28
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover pilot-operated pressure-control valves intended to reduce the water pressure in the supply piping for standpipe systems, or sprinkler systems, or both.

    1.2 The valves covered by these requirements are intended for use in:

    a)    Standpipe systems installed in accordance with the Standard for Installation of Standpipe and Hose Systems, NFPA 14; or

    b)    Sprinkler systems installed in accordance with the Standard for Installation of Sprinkler Systems, NFPA 13.

    1.3 The valves covered by these requirements are intended to be inspected, tested, and maintained in accordance with the Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, NFPA 25.

  • TABLE OF CONTENTS
    Expand All

    • 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 Inlet Pressure
          • 8 Outlet Pressure Settings
          • 9 Bodies and Bonnets
          • 10 Materials
          • 11 Body-Seat Rings
          • 12 Valve Mechanisms
          • 13 Clearances
          • 14 Valve Adjustment
        • PERFORMANCE
          • 15 General
          • 16 10-Day Moist Ammonia Air Stress Cracking Test
          • 17 Elastomeric Parts (Except Gaskets) Test
          • 18 Spring Test
          • 19 Operation Test
          • 20 Leakage Tests
            • 20.1 General
            • 20.2 Seat leakage test
            • 20.3 Body leakage test
          • 21 Strength of Body Test
          • 22 One-Year Static Leakage Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 23 General
        • MARKINGS
          • 24 General
        • INSTRUCTIONS
          • 25 Installation and Operating Instructions