UL 569

Pigtails and Flexible Hose Connectors for LP-Gas

UL 569

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 1.2(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.

1.1 revised January 31, 2001

1.1A These requirements also cover hose without end-connection fittings that is used to manufacture flexible hose connectors.

1.1A added November 3, 2009

1.2 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, Subject 1785, “LP-Gas Fuel Hose and Hose Assemblies for Vehicle Engines.”

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.

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.

1.3 revised January 31, 2001