1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULApril 29, 20151UL 213COutline of Investigation for Grooved and Plain End FittingsIssue Number: 3April 29, 2015SUMMARY OF TOPICSThis Third Issue of the Outline of Investigation for Grooved and Pla
2、in EndFittings, UL 213C, is being issued to specify that the requirements forParagraphs 5.2, 5.4, and 13.1 will become effective on August 3, 2017.ULs Outlines of Investigation are copyrighted by UL. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. Al
3、l ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of UL.COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT
4、 PERMISSION FROM ULAPRIL 29, 2015UL 213C2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Components 53 Units of Measurement .54 Undated References 65 Glossary .6CONSTRUCTION6 General 77 Groov
5、es and Plain Ends .78 Rated Pressure .79 Metallic Materials .7PERFORMANCE10 General .711 Leakage Test 812 Hydrostatic Test .8MARKINGS13 General .8APRIL 29, 2015 UL 213C 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis page intentionally l
6、eft blank.APRIL 29, 2015UL 213C4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover the construction and performance of Grooved and Plain End fittingsintended to be joined to pipe or to another fitti
7、ng by couplings complying with the requirements of theStandard for Rubber Gasketed Fittings for Fire-Protection Service, UL 213.1.2 For the purpose of this Outline of Investigation, Grooved and Plain End fittings include constructionshaving one piece cast devices and fittings fabricated from steel p
8、ipe that could be segmented and weldedto form the fitting.2 Components2.1 Except as indicated in this clause, a component of a product covered by this Outline of Investigationshall comply with the requirements for that component.2.2 A component is not required to comply with a specific requirement t
9、hat: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 requirement in this Outline of Investigation.2.3 A component shall be used in accordance with its rating established for the in
10、tended conditions ofuse.2.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specifi
11、c conditions.3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.APRIL 29, 2015 UL 213C 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Undated Ref
12、erences4.1 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.5 Glossary5.1 For the purpose of these requirements, the following definitions apply.5.2 GROOVED END F
13、ITTING A fitting constructed with outlets grooved for use with specificcouplings complying with the requirements of the Standard for Rubber Gasketed Fittings for Fire-Protection Service, UL 213.5.2 effective August 3, 20175.3 NPS (NATIONAL PIPE SIZE) A dimensionless designator for pipe sizes defined
14、 in standardsincluding ASTM A 53/A 53M, ASTM A 135/A 135M and ASTM A 795/A 795M used to replace termssuch as Nominal Diameter and Nominal Size.5.4 PLAIN END FITTING A fitting having outlets without grooves or threads.5.4 effective August 3, 20175.5 PROPRIETARY GROOVES Dimensions of the grooved end f
15、itting specified by the rubbergasketed fitting manufacturer that differ by dimension or tolerance from Standard Groove Dimensions.These proprietary grooves are intended for use with specific rubber gasketed fittings havingdimensionally compatible proprietary grooves.5.6 RUBBER GASKETED FITTING A cou
16、pling commonly consisting of a two-part metallic housingand an internal elastomeric seal bolted together to form an assembly used to connect a fitting with otherfittings or pipe.5.7 STANDARD GROOVES Dimensions of the grooved end, fitting specified by the rubber gasketedfitting manufacturer that comp
17、lies with the dimensions of the Standard for Fire protection Automaticsprinkler systems Part 12: Requirements and test methods for grooved-end components for steel pipesystems, ISO 6182-12, for cut, rolled and cast grooves, intended for use with a groove type rubbergasketed fitting to join the fitti
18、ngs.APRIL 29, 2015UL 213C6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONSTRUCTION6 General6.1 Grooved and plain end fittings shall be constructed with ends compatible with the joining methodspecified by the installation instructions of th
19、e Rubber gasketed fittings.7 Grooves and Plain Ends7.1 Fittings using a grooved joining method shall have groove dimensions compatible with couplingscomplying with the requirements of the Standard for Rubber Gasketed Fittings for Fire-Protection Service,UL 213, intended to be used with the fitting.7
20、.2 Grooved fittings shall be permitted to have Standard or Proprietary groove dimensions.7.3 Fittings without grooves (plain-end) shall have fitting end dimensions compatible with couplingscomplying with the requirements of the Standard for Rubber Gasketed Fittings for Fire-Protection Service,UL 213
21、, intended to be used with the fittings.8 Rated Pressure8.1 A fitting 12 inch (305 mm) size or smaller shall be constructed for a minimum rated pressure of 175psig (1.2 MPa).8.2 A fitting of a size larger than 12 inches (305 mm) shall be constructed for a minimum rated pressureof 150 psig (1.0 Mpa).
22、9 Metallic Materials9.1 Metallic materials used in fitting samples submitted for investigation and test shall conform to theminimum physical property requirements of the latest edition of the applicable ASTM or equivalentmaterial standard as specified by the manufacturer.PERFORMANCE10 General10.1 Re
23、presentative sample fittings are to be subjected to the tests described in these requirements.10.2 Fittings shall be tested using couplings complying with the requirements of the Standard for RubberGasketed Fittings for Fire-Protection Service, UL 213, intended to be used with the fitting.APRIL 29,
24、2015 UL 213C 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL11 Leakage Test11.1 A grooved or plain end fitting shall withstand for 1 minute, without leakage at joints, an internalhydrostatic pressure of two times the rated pressure of the fi
25、tting.11.2 The fitting shall be assembled with couplings in accordance with the coupling manufacturersinstallation instructions. The ends of the test assembly are to be closed to provide for the assembly to bepressurized. The test assembly is to be water filled and the pressure increased to twice th
26、e rated pressurefor 1 minute.12 Hydrostatic Test12.1 A fitting shall be capable of withstanding, for 5 minutes without rupture, a test pressure equal to amultiple of the rated pressure as shown in Table 12.1.Table 12.1Hydrostatic test pressuresFitting size, NPS Multiple of rated pressureLess than 12
27、 412 and larger 312.2 Hydrostatic tests are to be conducted on fitting assemblies in accordance with the methods of 11.2,and with the pressure specified in 12.1.MARKINGS13 General13.1 Grooved and plain end fittings shall be marked with the following, where visible after installation:a) Name or ident
28、ifying symbol of the manufacturer or private labeler;b) Size of fitting;c) Distinctive model number or catalog designation; andd) Fittings that use proprietary grooves shall be marked with the following: “PG” or “Prop Grv”.13.1 effective August 3, 201713.2 The markings required by 13.1 (a), (b), and
29、 (c) shall be included in the form of legible letters andfigures on the fitting casting or on an etched or stamped brass or equivalently corrosion-resistant metalnameplate permanently attached to the fitting.13.3 For fittings fabricated from steel pipe, the markings required by 13.1 (a), (b), and (c
30、) shall bepermitted to be paint or ink stenciled or by roller wheel.APRIL 29, 2015UL 213C8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL13.4 The year of manufacture shall be marked on the fitting in accordance with 13.2. When fittings arefab
31、ricated from steel pipe, the year of manufacture may be marked in accordance with 13.3. The year ofmanufacture is permitted to be in code. Fittings produced in the last three months of a calendar year arepermitted to be marked with the following year as the date of manufacture.13.5 If a manufacturer
32、 produces fittings at more than one factory, each fitting shall have a distinctivemarking by which the fitting is identified as the product of a particular factory.APRIL 29, 2015 UL 213C 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 29, 2015UL 213C10No Text on This Page
