UL 428A
Standard for Electrically Operated Valves for Gasoline and Gasoline/Ethanol Blends with Nominal Ethanol Concentrations Up to 85 Percent (E0 - E85)

DETAILS
Edition Number:1SCC Approved:--
Edition Date:2015-06-04DOD Approved: --
Price Code:BANSI Approved: 2019-04-29
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover electrically operated general purpose and safety valves rated 600 volts or less and intended for the control of the fluids specified in 1.2. Electrically operated valves, other than automotive fuel valves, covered by these requirements are intended to be used in other than hazardous locations as defined in accordance with the National Electrical Code, NFPA 70.

    1.2 Electrically operated valves for use in dispensing devices are intended for use with one or more of the following:

    a)    Gasoline formulated in accordance with the Standard Specification for Automotive Spark Ignition Fuel, ANSI/ASTM D4814;

    b)    Gasoline/ethanol blends with nominal ethanol concentrations up to 25 percent ethanol (E25), consisting of gasoline formulated in accordance with the Standard Specification for Automotive Spark Ignition Fuel, ANSI/ASTM D4814, when blended with denatured fuel ethanol formulated to be consistent with the Standard Specification for Denatured Fuel Ethanol for Blending With Gasoline For Use as Automotive Spark Ignition Engine Fuel, ANSI/ASTM D4806; or

    c)    Gasoline/ethanol blends with nominal ethanol concentrations above 25 percent formulated in accordance with the Standard Specification in item (b) or formulated in accordance with the Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark Ignition Engines, ANSI/ASTM D5798, as applicable.

    1.3 These requirements cover valves whose coils are powered by a Class 2 (low-voltage) source. Valves incorporating a high-voltage transformer with a low-voltage secondary as an integral part of the valve assembly, are also covered by these requirements.

    1.4 These requirements do not cover valves for use with fluids other than as specified in 1.2.

    1.5 These requirements do not cover valves employing electrical parts, including coils, switch contacts and resistance elements, located in the flammable gas containing compartment of a valve. Valves constructed as such shall comply with the requirements in the Standard for Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classified) Locations, UL 913.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Units of measurement
            • 2.3 Undated references
            • 2.4 Automotive-fuel valve
          • 3 Glossary
        • CONSTRUCTION
          • 4 General
          • 5 Assembly
            • 5.1 All valves
            • 5.2 Safety valves
            • 5.3 Class 2 (low-voltage) valves
          • 6 Materials
            • 6.1 Metallic materials
            • 6.2 Nonmetallic materials
            • 6.3 Casting impregnation materials
            • 6.4 Internal parts – fluid compatibility
            • 6.5 Insulating Materials
            • 6.6 Blending options
          • 7 Fluid Connections
          • 8 Seals and Stuff Boxes
          • 9 Springs
          • 10 Diaphragms
          • 11 Operating Mechanisms
          • 12 Current-Carrying Parts
          • 13 Enclosures
            • 13.1 General
            • 13.2 Metallic enclosures
            • 13.3 Polymeric enclosures
            • 13.4 Enclosure conduit connection
            • 13.5 Openings
            • 13.6 Accessibility of live parts
            • 13.7 Screens and expanded metal
            • 13.8 Rainproof, raintight, and watertight enclosures
            • 13.9 Corrosion protection
            • 13.10 Safety valves
          • 14 Field Wiring Connections
            • 14.1 General
            • 14.2 Leads
            • 14.3 Field Wiring Terminals
            • 14.4 Wiring space
          • 15 Internal Wiring
          • 16 Grounding
          • 17 Bonding
          • 18 Protection of Users and Service Personnel
          • 19 Transformers, Coils and Motors
          • 20 Switches
          • 21 Spacings
            • 21.1 General
            • 21.2 High-voltage circuits
            • 21.3 Low-voltage circuits – and low-voltage safety-control circuits
            • 21.4 Other than safety-control circuits
          • 22 Alternate Spacing – Clearances and Creepage Distances
          • 23 Separation of Circuits
            • 23.1 General
            • 23.2 Barriers
        • PERFORMANCE
          • 24 General
          • 25 Input Test
          • 26 Temperature Test
          • 27 Long Term Exposure Test
            • 27.1 General
            • 27.2 Samples
            • 27.3 Method
            • 27.4 Results
          • 28 Operation Test
          • 29 Torque Test
            • 29.1 All valves
            • 29.2 Safety valves
          • 30 External Leakage Test
          • 31 Seat Leakage Test
          • 32 Endurance Test
          • 33 Vibration Test – Safety Valves
          • 34 Hydrostatic Strength Test
          • 35 Dielectric Voltage-Withstand Test
          • 36 Increased Potential Test
          • 37 Burnout Test
          • 38 Breakdown of Component Test
          • 39 Rain Test
          • 40 Hosedown Test
          • 41 Metallic Coating Thickness Test
          • 42 Blending Cycling Test
          • 43 Printed Wiring Board Abnormal Operation Test
          • 44 Sight Glass Impact Test
          • 45 Sight Glass Temperature Shock Test
          • 46 Clamped Insulating Joints in Lieu of Spacings
        • MANUFACTURING AND PRODUCTION
          • 47 General
        • ELECTRICAL RATINGS
          • 48 Details
        • MARKING
          • 49 Details
          • 50 Cautionary Markings
          • 51 Visibility and Permanence of Markings
            • 51.1 General
            • 51.2 Unusual-condition exposure test
    • Test Fluids