1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJune 21, 20101SUBJECT 213BOUTLINE OF INVESTIGATIONFORWELDED OUTLET FITTINGS FOR FIRE PROTECTION SYSTEMSIssue Number: 5JUNE 21, 2010Summary of TopicsThis Fifth Issue of the Outline of Investigatio
2、n for Welded Outlet Fittingsfor Fire Protection Systems, Subject 213B, includes the following changesin requirements from the Fourth Issue of the Outline:Inclusion of references to installation standards where steelwelded outlet fittings are intended for useAddition of Paragraph 5.2 to include a def
3、inition for NPS orNominal Pipe SizeAddition of Paragraph 5.3 to include a definition for RubberGasketed FittingsAddition of references to Paragraph 6.1 and new Section 7 forother acceptable materials used to construct these fittingsAddition of references to Paragraphs 6.2 and 6.3 for otheracceptable
4、 pipe threads for threaded fittingsAddition of references to new Paragraph 8.5 to specify the weldmethod and pipe preparation as specified in NFPA 13 whenfabricating test samplesClarification of requirements for the Leakage and HydrostaticTests in Sections 9 and 10 respectivelyAddition of the Bendin
5、g Moment Test, Section 11, when the outletpipe wall thickness is less than the wall thickness of the run pipeRemoval of the Metallic Material Test and replacing the testingrequirements with the material specification compliance in MetallicMaterial, Section 7See the Fourth Issue for the current requi
6、rements until the effective dateis met.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThe UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of the requirements contained in thisStandard
7、, the current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2010 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 General 52.1 Components .52.2 Units of measu
8、rement .52.3 Undated references .53 Rated Pressure .54 Sizes 65 Glossary .6CONSTRUCTION6 General 67 Metallic Materials .7PERFORMANCE8 Samples .79 Leakage Test .810 Hydrostatic Pressure Test .811 Bending Moment Test 8MARKING12 General .9JUNE 21, 2010 SUBJECT 213B 3UL COPYRIGHTED MATERIAL NOT AUTHORIZ
9、ED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover steel welded outlet fittings intended for use in water based fire protectionsystems in accordance with the following installation standards:a) Standard for Low-, Medium-, and High-Exp
10、ansion Foam, NFPA 11;b) Standard for the Installation of Sprinkler Systems, NFPA 13;c) Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings andManufactured Homes, NFPA 13D;d) Standard for the Installation of Sprinkler Systems in Residential Occupancies Up to andIncludi
11、ng Four Stories in Height, NFPA 13R;e) Standard for the Installation of Standpipe and Hose Systems, NFPA 14;f) Standard for Water Spray Fixed Systems for Fire Protection, NFPA 15; andg) Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems,NFPA 16;1.2 Welded Outlet Fitti
12、ngs consist of steel outlets intended to be welded to steel run pipe in Schedules10, 30, 40 and Listed steel sprinkler pipe having the same outside diameter as Schedule 40 pipe where:a) The outlet pipe having wall thickness the same as or less than the run pipe orb) The run pipe has a wall thickness
13、 equivalent to Schedule 10 steel pipe and the outlet wallthickness is equivalent to Schedule 40 steel pipe.These fittings may be suitable for use with other Listed steel run pipe when intended for use with outletwall thicknesses greater than the run pipe wall thickness, when evaluated as described i
14、n BendingMoment Test, Section 11.JUNE 21, 2010SUBJECT 213B4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2 General2.1 Components2.1.1 Except as indicated in this paragraph, a component of a product covered by this Outline ofInvestigation sha
15、ll comply with the requirements for that component.2.1.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this Outline of Investigation orb) Is superseded by a requ
16、irement in this Outline of Investigation.2.1.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only u
17、nder limited conditions, such as certaintemperatures not exceeding specified limits, and shall be used only under those specific conditions.2.2 Units of measurement2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.2.3 Undated
18、 references2.3.1 Any undated reference to a code or standard appearing in the requirements of this Outline ofInvestigation shall be interpreted as referring to the latest edition of that code or standard.3 Rated Pressure3.1 Welded Outlet fittings shall be constructed for use at a minimum rated press
19、ure of 175 psig.JUNE 21, 2010 SUBJECT 213B 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Sizes4.1 Outlet fittings sizes shall be 1/8 NPS or larger.5 Glossary5.1 For the purpose of these requirements, the following definitions apply.5.2 NP
20、S (NOMINAL PIPE SIZE) A dimensionless designator for pipe sizes defined in standardsincluding the:a) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded andSeamless, ASTM A53/A53M;b) Standard Specification for Electric-Resistance-Welded Steel Pipe, ASTM A135/A135M; andc
21、) Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded andSeamless Steel Pipe for Fire Protection Use, ASTM A795/A795Mused to replace terms such as “Nominal Diameter” and “Nominal Size”.5.3 RUBBER GASKETED FITTING A coupling commonly consisting of a two-part metallic housi
22、ngand an internal elastomeric seal bolted together to form an assembly used to connect a fitting with otherfittings or pipe.CONSTRUCTION6 General6.1 The welded outlet fittings are to be constructed to comply with the requirements of the StandardSpecification for Piping Fittings of Wrought Carbon Ste
23、el and Alloy Steel for Moderate and HighTemperature Service, ASTM A234/A234M, the Standard for Factory-Made Wrought Buttwelding Fittings,ASME B16.9, and Forged Fittings, Socket-Welding and Threaded, ASME B16.11 or fabricated from pipingcomplying with:a) The Standard Specification for Pipe, Steel, Bl
24、ack and Hot-Dipped, Zinc-Coated, Welded andSeamless, ASTM A53/A53M;b) The Standard Specification for Carbon Steel Forgings for Piping Applications ASTM A105/A105M;c) The Standard Specification for Electric-Resistance-Welded Steel Pipe, ASTM A135/A135M;d) The Standard Specification for Black and Hot-
25、Dipped Zinc-Coated (Galvanized) Welded andSeamless Steel Pipe for Fire Protection Use, ASTM A795/A795M; ore) Other equivalent national or international accepted steel pipe standards.JUNE 21, 2010SUBJECT 213B6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMI
26、SSION FROM UL6.2 Welded outlet fittings intended for threaded joints shall be provided with pipe threads complying withthe following:a) Standard for Pipe Threads, General Purpose (Inch) Revision and Redesignation of ASME/ANSI B2.1-1968, ASME B1.20.1;b) Standard for Dryseal Pipe Threads (Inch) Revisi
27、on and Redesignation of B2.2-1968,ASME B1.20.3 or;c) Pipe threads complying with a national or international pipe thread standard.6.3 Welded outlet fittings intended for pipe to be joined with mechanical grooved rubber gasketed fittingsshall be provided with grooves that are cut or rolled on the wel
28、ded outlet fitting. They shall comply withthe installation instructions for the rubber gasketed fitting.6.4 Fittings shall be constructed so they are capable of being joined to piping using either the weldingmethods specified in:a) The Standard for Buttwelding Ends, ASME B16.25;b) The welding method
29、s and minimum weld thickness as specified in the Standard for theInstallation of Sprinkler Systems, NFPA 13; orc) Other welding procedures that are at least equivalent.7 Metallic Materials7.1 Metallic materials used in fitting samples submitted for investigation and test shall conform to theminimum
30、physical property requirements of the latest edition of the applicable ASTM or equivalentmaterial standard as specified by the manufacturer.PERFORMANCE8 Samples8.1 Representative sample welded outlet fittings are to be dimensionally checked for compliance with theconstruction requirements specified
31、on the manufacturers drawings.8.2 Before the fittings are welded in place, the holes shall be cut into the piping for the outlet fitting to thefull inside diameter of the fitting.8.3 Openings cut into piping shall be smooth bore and all internal slag and welding residue shall beremoved.8.4 Fittings
32、shall not penetrate the internal diameter of the piping.JUNE 21, 2010 SUBJECT 213B 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8.5 Fittings shall be joined to run or manifold piping using welding methods and minimum weld thicknessas speci
33、fied in the Standard for the Installation of Sprinkler Systems, NFPA 13.9 Leakage Test9.1 Welded fittings assembled onto representative sections of pipe shall withstand for 1 minute, withoutleakage at joints and body, an internal hydrostatic pressure of two times the rated pressure of the fitting.9.
34、2 The sample fittings are to be filled with water, attached to a hydrostatic pressure supply and ventedof air. A hydrostatic pressure of twice the rated pressure is to be applied and maintained for a duration of1 minute.10 Hydrostatic Pressure Test10.1 Welded fittings shall withstand for 5 minutes,
35、without rupture or deformation of the fitting body orweld, an internal hydrostatic pressure of four times the rated pressure of the fitting. For the purpose of thistest, the weld includes the heat affected zone of the weld.10.2 The hydrostatic pressure in the sample fittings used in the Leakage Test
36、, Section 9, are to begradually increased to four times the rated pressure and maintained for a duration of 5 minutes.11 Bending Moment Test11.1 Bending moment tests shall be conducted on outlet fittings in accordance with the Bending MomentTest Side Outlet as specified in the Standard for Rubber Ga
37、sketed Fittings for Fire-Protection Service,UL 213 when outlets fabricated from steel material intended to be used with combinations of run pipe(other than Schedule 10 or Schedule 40) with outlet pipes having wall thicknesses greater than the runpipe for sizes 1 in. and larger. The applied bending m
38、oment is determined by values corresponding to theoutlet pipe size and thickness.11.1 effective December 21, 201111.2 Bending moment tests are not required where outlet fittings are intended for direct connection tosprinklers or nozzles.11.2 effective December 21, 2011JUNE 21, 2010SUBJECT 213B8UL CO
39、PYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARKING12 General12.1 Each fitting shall be marked with the following:a) Manufacturers or private labelers name or identifying symbol.b) Nominal size of pipe run and outlet.JUNE 21, 2010 SUBJECT 213B 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJUNE 21, 2010SUBJECT 213B10No Text on This Page
