UL 2443:2004 pdf download Flexible Sprinkler Hose with Fittings for Fire Protection Service
Scope
1.1 This standard covers flexible sprinkler hose with fittings intended for use with fire sprinklers ininstallations requiring a flexible attachment to the sprinkler system piping such as clean rooms, suspendedceilings,and exhaust ducts.
1.1 effective November 10，2006
1.2 The products covered by this standard are intended for use in sprinkler systems installed inaccordance with the Standard for lnstallation of Sprinkler Systems. NFPA 13: Standard for the lnstallationof Sprinkler Systems in Residential Occupancies Up to Four Stories in Height NFPA 13R: and Standardfor the lnstallation of Sprinkler Systems in One and Two-Family Dwellings and Mobile Homes, NFPA13D.
1.2 effective November 10, 2006
2 Components
2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with therequirements for that component.
2.1 effective November 10, 2006
2.2 A component is not required to comply with a specific requirement that:
a) lnvolves a feature or characteristic not required in the application of the component in theproduct covered by this standard, or
b) Is superseded by a requirement in this standard.2.2 effective November 10,20062.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.
2.3 effective November 10.2006
2.4 Specific components are incomplete in construction features or restricted in performance capabilitiesSuch components are intended for use only under imited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.
2.4 effective November 10,2006
3 Units of Measurement
3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.
3.1 effective November 10，2006
4Undated References
4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall beinterpreted as referring to the latest edition of that code or standard.
4.1 effective November 10，2006
5 Glossary
5.1 For the purpose of this standard the following definitions apply:5.1 effective November 10, 2006
5.2 FLEXIBLE HOSE WITH FITTINGS HAVING HIGH FLEXIBILITY – This type of hose with fitings isntended to be used in applications where frequent movement between the two ends of the hose isexpected after installation.
5.2 effective November 10, 2006
5.3 FLEXIBLE HOSE WITH FITTINGS HAVING LIMITED FLEXIBILITY – This type of hose with fittingsis intended to be used in applications where little or no movement between the two ends is expectedafter installation.
5.3 effective November 10,2006
CONSTRUCTION
6General
6.1 Flexible sprinkler hose with threaded end fittings shall be constructed of metallic pressure retainingcomponents and have a rated pressure of 175 psig (1.24 Mpa) or higher.
6.1 effective November 10,2006
6.2 The inlet shall have at least 1-inch size male or female NPT pipe threads in accordance with theStandard for Pipe Threads, General Purpose. ANSI/ASME B1.20.1 or other suitable means of connectionsuch as a grooved fitting in at least a 1-inch size. The outlet shall have 1/2, 3/4 or 1-inch female NPT pipethreads.
6.2 effective November 10,2006
6.3 The flexible hose shall be provided with the fittinas attached and secured to the hose. The insidediameter of the hose and fittings shall not be less than 0.75 inch nor the diameter of the largest sprinkler
orifice intended to be installed onto the assembly.

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