UL 2227
Standard for Overfilling Prevention Devices

DETAILS
Edition Number:2SCC Approved:--
Edition Date:2007-02-16DOD Approved: --
Price Code:BANSI Approved: 2014-06-06
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover devices for use on stationary containers or portable LP-Gas containers that consist of a shutoff mechanism that works in conjunction with a liquid level sensing device that shuts off the incoming flow of LP-Gas during a refilling operation when the liquid level reaches a predetermined point. The sensing mechanism may be a float, dip tube, or other type of sensor that is intended to cause operation of the shutoff mechanism. An overfilling prevention device may be a separate component intended for installation on cylinder or fill valves designed for such purposes, or may be incorporated into the design of a cylinder or fill valve assembly. Overfilling prevention devices may be designed for use in automotive applications.

    1.2 Overfilling prevention devices covered by these requirements are for use in applications covered by the following standards:

    a)     Liquefied Petroleum Gas Code, NFPA No. 58.

    b)     Outdoor Cooking Gas Appliances, ANSI Z21.58/CGA 1.6-M95.

    c)     Standard on Recreational Vehicles, RVIA A119.2.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • INTRODUCTION
          • 1 Scope
          • 2 General
            • 2.1 Components
            • 2.2 Undated references
            • 2.3 Units of measurement
          • 3 Service Pressure Rating
          • 4 Glossary
        • CONSTRUCTION
          • 5 General
          • 6 Materials
          • 7 Springs
        • PERFORMANCE
          • 8 General
          • 9 Deformation Test
          • 10 External Leakage Test
          • 11 Seat Leakage Test
          • 12 Operation Test
          • 13 Liquid Withdrawal Test
          • 14 Positive Shutoff Test
          • 15 Endurance Test
          • 16 Vibration Test
          • 17 Hydrostatic Strength Test
          • 18 Surge Pressure Test
          • 19 Float Crush Test
          • 20 Float Pull Test
          • 21 Breakoff Test
          • 22 10-Day Moist Ammonia Test
          • 23 Accelerated Aging Test
          • 24 LP-Gas Compatibility Test
          • 25 Commercial Propane Compatibility Test
          • 26 Low Temperature Test
          • 27 Impact Resistance (Drop Test)
          • 28 BTU Flow Rating Test
        • MANUFACTURING AND PRODUCTION TESTS
          • 29 General
        • MARKING
          • 30 General