UL 21

UL Standard for Safety LP-Gas Hose

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Organization: UL
Publication Date: 15 December 2014
Status: active
Page Count: 29
scope:

These requirements cover hose and hose assemblies in sizes up to and including a nominal internal diameter of 4 in (102 mm) for conveying liquefied petroleum gas (LP-Gas) intended to be installed in closed systems in compliance with the Standard of the National Fire Protection Association Liquefied Petroleum Gas Code, NFPA 58. The hose or hose assembly is intended for a maximum working pressure of 350 pounds per square inch gauge (psig) (2400 kPa) for use at temperatures within the range of minus 40°C (minus 40°F) to plus 60°C (140°F), or minus 54°C (minus 65°F) to plus 60°C. Hose and hose assemblies in sizes larger than 2 in (50.8 mm) are not intended for use on reels.

This standard does not apply to:

a) Flexible hose connectors for LP-Gas that are investigated under the Standard for Pigtails and Flexible Hose Connectors for LP-Gas, UL 569;

b) Gas appliance connectors for handling fuel gases at 5 psig (34.5 kPa) or less, which are investigated under Connectors for Gas Appliances, ANSI Z21.24, nor to metallic hose intended for use in oil transportation piping, in petroleum refinery piping, or in gas transmission and distribution piping systems; or

c) Hose intended for use in automotive applications or hose intended for use in confined areas.

d) Hose assemblies that are investigated under Gas Hose Connectors for Portable Outdoor Gas-Fired Appliances, ANSI Z21.54.

Document History

UL 21
December 15, 2014
UL Standard for Safety LP-Gas Hose
These requirements cover hose and hose assemblies in sizes up to and including a nominal internal diameter of 4 in (102 mm) for conveying liquefied petroleum gas (LP-Gas) intended to be installed in...
December 15, 2014
UL Standard for Safety LP-Gas Hose
These requirements cover hose and hose assemblies in sizes up to and including a nominal internal diameter of 4 in (102 mm) for conveying liquefied petroleum gas (LP-Gas) intended to be installed in...
December 15, 2014
UL Standard for Safety LP-Gas Hose
These requirements cover hose and hose assemblies in sizes up to and including a nominal internal diameter of 4 in (102 mm) for conveying liquefied petroleum gas (LP-Gas) intended to be installed in...
December 20, 2007
UL Standard for Safety LP-Gas Hose
These requirements cover hose and hose assemblies in sizes up to and including a nominal internal diameter of 4 in (102 mm) for conveying liquefied petroleum gas (LP-Gas) intended to be installed in...
December 20, 2007
UL Standard for Safety LP-Gas Hose
These requirements cover hose in sizes up to and including a nominal internal diameter of 4 in (102 mm) for conducting liquefied petroleum gas intended to be installed in closed systems in compliance...
June 1, 1995
UL Standard for Safety LP-Gas Hose
A description is not available for this item.
June 1, 1995
UL Standard for Safety LP-Gas Hose
A description is not available for this item.
21
January 1, 1995
UL Standard for Safety LP-Gas Hose
A description is not available for this item.

References

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