UL 1626
Standard for Residential Sprinklers for Fire-Protection Service

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2008-03-14DOD Approved: --
Price Code:DANSI Approved: 2017-05-15
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover residential sprinklers intended for installation on sprinkler systems for fire-protection service. Requirements for the installation and use of residential sprinklers are included in the Standards for the Installation of Sprinkler Systems, NFPA 13, and Installation of Sprinkler Systems in One- and Two-Family Dwellings and Mobile Homes, NFPA 13D, and Residential Occupancies up to and Including Four Stories in Height Sprinkler Systems, NFPA 13R.

    1.2 The requirements in this standard are not intended to restrict the application of representative fire and other tests for special sprinklers, as referenced in Standard for the Installation of Sprinkler Systems, NFPA 13, that are intended to provide protection for specific fire hazards.

    1.3 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.

  • 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
            • 5.1 General
            • 5.2 Residential sprinkler types
        • CONSTRUCTION
          • 6 General
          • 7 Inlet Threads
          • 8 Temperature Ratings
          • 9 Pressure Rating
          • 10 Nominal “K” Factors
          • 11 Protective Covers
          • 11A Polymeric Sprinklers
        • PERFORMANCE
          • GENERAL
          • 12 Details
          • 13 Samples
          • PHYSICAL STRENGTH AND LEAKAGE TESTS
          • 14 Load on Heat Responsive Element Test
          • 15 Strength of Heat Responsive Element Test
            • 15.1 Fusible-alloy types
            • 15.2 Glass-bulb types
          • 16 Glass-bulb thermal shock test
          • 17 Strength of Frame Test
          • 18 Impact Resistance Test
          • 19 Impact Test for Protective Covers
          • 20 Rough Usage Test
          • 21 Flow Endurance Test
          • 22 Leakage Test
          • 23 Hydrostatic Strength Test
          • 24 Dry Sprinkler Air Tightness Test
          • 25 30-Day Leakage Test
          • 26 Water Hammer Test
          • 27 Vacuum Test
          • OPERATION TESTS
          • 28 Operating Temperature (Bath) Test
          • 28A Air Bath Test for Glass Bulb Sprinklers
          • 29 Sensitivity Tests
            • 29.1 Oven heat test
            • 29.2 Room heat test
          • 30 Operation – Lodgement Test
          • EXPOSURE AND CORROSION TESTS
          • 31 High Temperature Test
          • 32 Elastomeric Parts Test
          • 33 Vibration Test
          • 34 Freezing Test
          • 35 Corrosion Exposure Tests
            • 35.1 General
            • 35.2 5 percent salt spray
            • 35.3 Moist hydrogen sulfide air mixture
            • 35.4 Moist carbon dioxide-sulfur dioxide air mixture
          • 36 Moist Air Test
          • 37 Exposure Tests On Sprinklers Incorporating Polymeric Gaskets
            • 37.1 General
            • 37.2 Corrosive exposures
            • 37.3 Temperature cycling exposure
            • 37.4 Hydrocarbon exposure followed by moist air exposure
            • 37.5 Hydrocarbon exposure followed by water immersion exposure
            • 37.6 Exposure to antifreeze solutions
          • 38 Dry-Type Sprinkler Deposit Loading Test
          • 39 Dezincification Test of Brass Parts
            • 39.1 General
            • 39.2 Reagent
            • 39.3 Test Pieces
            • 39.4 Method
          • 40 Stress-Corrosion Cracking of Brass Sprinkler Parts Test
          • 41 Stress-Corrosion Cracking of Stainless Steel Sprinkler Parts Test
          • WATER FLOW AND DISTRIBUTION TESTS
          • 42 Calibration Test
          • 43 Water Distribution Test – Horizontal Surface
            • 43.1 Acceptance criteria
            • 43.2 Test method
          • 44 Water Distribution Test – Vertical Surface
            • 44.1 Acceptance criteria
            • 44.2 Test method
          • FIRE TESTS
          • 45 Water Impingement Test
          • 46 Fire Test
            • 46.1 General
            • 46.2 Test arrangement
            • 46.3 Test method
            • 46.4 Supplementary test
          • TESTS UNIQUE TO POLYMERIC SPRINKLERS
          • 46A Polymeric Sprinkler Exposure Tests
            • 46A.1 General
            • 46A.2 Test samples and post exposure testing
            • 46A.3 Water immersion exposure
            • 46A.4 Air oven aging exposure
            • 46A.5 Light and water exposure
          • 46B Long-Term Hydrostatic Pressure Test for Polymeric Sprinklers
          • 46C Temperature Cycling Exposure for Polymeric Sprinklers
          • 46D Impact Test for Polymeric Sprinklers
        • MANUFACTURING AND PRODUCTION TESTS
          • 47 General
          • 48 Production Leakage Test
          • 49 Glass Bulb Integrity Test
        • MARKING
          • 50 General
        • INSTALLATION INSTRUCTIONS
          • 51 Design Parameters and Installation Instructions
    • APPENDIX A