UL 569
Standard for Pigtails and Flexible Hose Connectors for LP-Gas

DETAILS
Edition Number:8SCC Approved:--
Edition Date:2013-11-19DOD Approved: --
Price Code:BANSI Approved: 2017-07-27
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover pigtails and flexible hose connectors used in the assembly of fuel-supply systems other than those outlined in 1.3(b) and (c), intended for liquefied petroleum gas (LP-Gas). Low or high pressure flexible hose connectors are also suitable for low pressure (1.0 psig (6.9 kPa) or less) natural gas service. LP-Gas systems use either Department of Transportation (DOT) cylinders or ASME tanks and are intended to be installed in accordance with the Liquified Petroleum Gas Code, NFPA/ANSI 58. Low pressure flexible hose connectors used in natural gas systems are intended to be installed in accordance with the National Fuel Gas Code, NFPA 54/ANSI Z223.1. Pigtails and flexible hose connectors are used to make connection between parts of equipment or between equipment and service piping.

    1.2 These requirements also cover hose without end-connection fittings that is used to manufacture flexible hose connectors.

    1.3 This Standard does not apply to:

    a)    Gas appliance connectors for handling fuel gases at 5 psig (34.5 kPa) or less which are investigated under the Standard for Metal Connectors for Gas Appliances, ANSI Z21.24.

    b)    Flexible hose connectors for engine fuel applications which are investigated under the Outline of Investigation, LP-Gas Fuel Hose and Hose Assemblies for Vehicle Engines, UL 1785.

    c)    Flexible hose connectors for use in confined areas.

    d)    Hose connectors which are investigated under the Standard for Gas Hose Connectors for Portable Outdoor Gas-Fired Appliances, ANSI Z21.54.

  • TABLE OF CONTENTS
    Expand All

    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Units of measurement
            • 2.2 Components
            • 2.3 Undated references
        • CONSTRUCTION
          • 3 General
          • 4 Flexible Hose Connector
          • 5 Pigtail
          • 6 Materials for Pigtails
          • 7 Materials for Flexible Hose Connectors
          • 8 End Connecting Fittings
          • 9 Inside Diameter for Flexible Hose Connectors
          • 10 Thickness of Flexible Hose Tube or Cover
        • PERFORMANCE
          • 11 General
          • 12 Aerostatic Leakage Test
          • 13 Hydrostatic Strength Test
          • 14 Pull Force Test
          • 15 Bending Test – Metallic Tubing
          • 16 Bending Test – Hose
          • 17 Low Temperature Test
          • 18 Tensile Strength and Elongation Tests of Rubber Tube and Cover
            • 18.1 General
            • 18.2 Before accelerated air-oven aging
            • 18.3 After accelerated air-oven aging test
            • 18.4 Method
          • 19 Adhesion Test
            • 19.1 General
            • 19.2 Apparatus
            • 19.3 Method
          • 20 Permeation Test
            • 20.1 General
            • 20.2 Apparatus
            • 20.3 Method
          • 21 Ozone Exposure Test
          • 22 Immersion Test of Rubber Tube and Cover
            • 22.1 Volumetric swelling
            • 22.2 Effect on tensile strength and elongation
          • 23 Moist Ammonia-Air Stress Cracking Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 24 General
        • MARKING
          • 25 General
          • 26 Permanence and Legibility of Marking