ANSI ASTM F2159-2018 Standard Specification for Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raise.pdf

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1、Designation: F2159 18 An American National StandardStandard Specification forPlastic Insert Fittings Utilizing a Copper Crimp Ring forSDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9Polyethylene of Raised Temperature (PE-RT) Tubing1This standard is issued under the fixed designation F2159; the n

2、umber immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Sco

3、pe*1.1 This specification establishes requirements for sulfoneplastic insert fittings and copper crimp rings for four sizes(38,12, and34 and 1) of cross-linked polyethylene (PEX)tubing that meet the requirements for Specification F876 andpolyethylene of raised temperature (PE-RT) tubing that meetthe

4、 requirements of Specifications F2623 and F2769. Thesefittings are intended for use in 100 psi (690 kPa) cold- andhot-water distribution systems operating at temperatures up toand including 180 F (82 C). Included are the requirementsfor material, molded part properties, performance,workmanship, dime

5、nsions, and markings to be used on thefittings and rings.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.3 The following is an

6、 index of the appendix in thisspecification:GO/NO-GO Crimp Gauges Appendix X11.4 The following precautionary caveat pertains only to thetest method portions, Sections 11 and 12, of this specification.This standard does not purport to address all of the safetyconcerns, if any, associated with its use

7、. It is the responsibilityof the user of this standard to establish appropriate safety,health, and environmental practices and determine the appli-cability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles o

8、n standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics

9、 for TestingD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD1599 Test Method for Resistance to Short-Time HydraulicPressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2122 Test Method for Determining Dimensi

10、ons of Ther-moplastic Pipe and FittingsD6394 Specification for Sulfone Plastics (SP)F412 Terminology Relating to Plastic Piping SystemsF876 Specification for Crosslinked Polyethylene (PEX) Tub-ingF1498 Specification for Taper Pipe Threads 60 for Thermo-plastic Pipe and FittingsF1807 Specification fo

11、r Metal Insert Fittings Utilizing aCopper Crimp Ring for SDR9 Cross-linked Polyethylene(PEX) Tubing and SDR9 Polyethylene of Raised Tem-perature (PE-RT) TubingF2623 Specification for Polyethylene of Raised Temperature(PE-RT) SDR 9 TubingF2769 Specification for Polyethylene of Raised Temperature(PE-R

12、T) Plastic Hot and Cold-Water Tubing and Distri-bution Systems2.2 ASME Standard:B 1.20.1 Pipe Threads General Purpose Inch32.3 NSF International Standard:ANSI/NSF Standard No. 14 for Plastic Piping Componentsand Related Materials4ANSI/NSF Standard No. 61 for Drinking Water SystemComponents-Health Ef

13、fects41This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved April 1, 2018. Published April 2018. Originallyapproved 2001. Last previous edition approved in 2014 as F215

14、9-14. DOI:10.1520/F2159-14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National

15、Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM Internationa

16、l, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides

17、and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412 and abbreviations are in accordance with Termi-nology D1600, unless otherwise indicated.4. Classification4.1 This

18、specification governs one class of fittings andcopper crimp rings suitable for use with nominal size38,12 ,34and 1 size PEX tubing that meets the requirements of ASTMSpecifications F876 and PE-RT tubing that meets the require-ments of Specifications F2623 and F2769.5. Materials and Manufacture5.1 Ma

19、terialFittings shall be molded from sulfone plastic(SP) as specified in Specification D6394. The material shall beunreinforced polysulfone (group 01, class 1, grades 1 or 2) orpolyphenylsulfone (group 03, class 1, grade 1 or 2) orunreinforced polyphenylsulfone/polysulfone blends (group 04,Class 1, g

20、rade 2) or reworked plastic in accordance with 5.1.1.NOTE 1Since fittings specified by this standard will be used inhot-and-cold water plumbing systems, a material used to manufacturefittings in accordance with this specification must demonstrate qualitiesconsistent with that application in addition

21、 to the performance require-ments of this specification. Those qualifying characteristics include, butare not limited to, an established hydrostatic design basis (HDB) or stressdesign basis (SDB) in accordance with PPI TR-3 or similar rating and ademonstration of resistance to the long-term effects

22、of those chemicalsnormally found in potable water at the maximum temperature stated in thisspecification.5.1.1 Rework MaterialClean rework material of the samecommercial designation, generated from the manufacturersown production may be used by the same manufacturer,provided the fittings meet all of

23、 the requirements of thisspecification. Reworked material shall not be introduced at aratio exceeding 25 %.5.2 Potable Water RequirementsProducts intended for thetransport of potable water shall be evaluated, tested andcertified for conformance with ANSI/NSF Standard No. 61 orthe health effects port

24、ion of ANSI/NSF Standard No. 14 by anacceptable certifying organization when required by the regu-latory authority having jurisdiction.5.3 Crimp RingsCrimp rings shall be manufactured andmarked in accordance with the requirements of SpecificationF1807.6. Molded Part Properties6.1 Insert CrushThe fit

25、ting insert shall not crack, split, orshatter when tested in accordance with 12.1.6.2 SplayThe molded part shall be free of visible splayexcepting some slight blushing at the gate location.7. Performance Requirements7.1 GeneralAll performance tests shall be performed onassemblies of fittings, crimp

26、rings, and PEX tubing or PE-RTtubing, or both. Fittings and crimp rings shall meet the materialand dimensional requirements of this standard. PEX tubingshall meet the requirements of Specification F876. PE-RTtubing shall meet the requirements of Specifications F2623 andF2769.Assembly of test specime

27、ns shall be in accordance withSection 10. Use separate sets of assemblies for each perfor-mance test requirement.7.2 Hydrostatic BurstAssemblies shall meet the minimumhydrostatic burst requirements shown in Table 1, when testedin accordance with 11.5.7.3 Hydrostatic Sustained Pressure StrengthAssemb

28、liesshall meet the hydrostatic sustained pressure requirementsshown in Table 2 when tested in accordance with 11.6.7.4 ThermocyclingAssemblies shall not leak or separatewhen thermocycled 1000 cycles between the temperatures of60 F (16 C) and 180 F (82 C) when tested in accordancewith 11.7.7.5 Excess

29、ive Temperature-Pressure Capability:7.5.1 GeneralAssemblies shall have adequate strength toaccommodate short-term conditions, 30 days (720 h) of 210 F (99 C) and 150 psi (1034 kPa) when tested in accordancewith 11.8.8. Dimensions8.1 Dimensions and TolerancesThe dimensions and toler-ances of fittings

30、 shall be as shown in Fig. 1, when measured inaccordance with 11.4.8.1.1 AlignmentThe maximum angular variation of anyopening shall not exceed 1 off the true centerline axis.8.1.2 Tapered ThreadsFitting threads shall be AmericanNational Standard Taper Pipe Thread Form conforming toSpecification F149

31、8.8.1.3 Straight ThreadsStraight pipe threads, intended forthe making of a gasketed seal with taper pipe threads, shall beNPSM and conform to ASME B 1.20.1.9. Workmanship, Finish, and Appearance9.1 The sealing surfaces of the insert shall be smooth andfree of foreign material. The fitting walls shal

32、l be free ofcracks, holes, blisters, voids, foreign inclusions, or otherdefects that are visible to the unaided eye and that affect thewall integrity.9.2 Except for the insert, the molded part shall be free offlash in excess of 0.005 in. Flash, mismatch, and witness markrequirements for the insert s

33、hall be in accordance with Fig. 1.10. Assembly10.1 Crimp JointsInsert fittings shall be joined to PEXtubing or PE-RT tubing by the compression of a copper crimpTABLE 1 Minimum Hydrostatic Burst Strength Requirements forFitting, Crimp Ring, and PEX Tubing or PE-RT TubingAssembliesNominalTubing SizeMi

34、nimum Burst Pressures atDifferent Temperaturesin.psigAat73.4F(kPa) at(23C)psigAat180F(kPa) at(82.2C)38 620 (4275) 275 (1896)12 480 (3309) 215 (1482)34 andlarger475 (3275) 210 (1448)AThe fiber stress to derive this test pressure is: at 73.4 F (23.0 C) 1900 psi(13.10 MPa) at 180 F (82.2 C) 850 psi (5.

35、86 MPa).F2159 182ring around the outer circumference of the tubing forcing thetubing material into annular spaces formed by ribs on thefitting. Insert fittings and crimp rings shall meet the dimen-sional and material requirements of this standard. PEX tubingshall meet the requirements of Specificati

36、ons F876. PE-RTtubing shall meet the requirements of Specifications F2623 andF2769. The dimensions and out-of-roundness of the crimp ringafter it has been crimped shall be in accordance with Table 3.10.1.1 Crimping ProcedureTo affix the insert fitting to thetubing with the crimp ring, the crimping p

37、rocedure shall be asfollows: slide the crimp ring onto the tubing, insert the ribbedend of the fitting into the end of the tubing until the tubingcontacts the shoulder of the fitting or tube stop. The crimp ringshall then be positioned on the tubing so the edge of the crimpring is18 in. to14 in. (3.

38、2 to 6.4 mm) from the end of the tube.The jaws of the crimping tool shall be centered over the crimpring and the tool shall be held so that the crimping jaws areapproximately perpendicular to the axis of the barb. The jawsof the crimping tool shall be closed around the crimp ring,compressing the cri

39、mp ring onto the tubing. The crimp ringshall not be crimped more than once. Each crimp shall bechecked to determine conformance to the after crimped dimen-sional requirements of Table 3.11. Test Methods11.1 ConditioningCondition specimens at 73 6 4 F (236 2 C) and 50 6 5 % relative humidity for not

40、less than 4 hprior to testing. Test Method D618 shall be used to the extentpossible as a guide to other conditions.11.2 Test ConditionsConduct the tests in the standardlaboratory atmosphere at 73 6 4 F (23 6 2 C) and 50 6 5%relative humidity unless otherwise specified in the test methodsor in this s

41、pecification.11.3 SamplingA sample of the fittings, crimp rings, andPEX tubing sufficient to determine conformance with thisspecification shall be taken at random.11.4 DimensionsAny randomly selected fitting or fittingsand crimp ring or crimp rings shall be used to determinedimensions. Measurements

42、shall be made in accordance withTest Method D2122. Determine the diameters by makingmeasurements at four locations spaced at approximately 45apart around the circumference.11.5 Burst PressureDetermine the minimum burst pres-sure in accordance with Test Method D1599 on at least sixassemblies for each

43、 temperature in Table 1. Leakage orseparation at any of the joints tested, or from the fitting itself,at less than the minimum burst requirements for the tempera-tures specified in Table 1 shall constitute a failure in this test.11.6 Sustained Hydrostatic PressurePerform the test on atleast six asse

44、mblies in accordance with Test Method D1598,except for the following:11.6.1 Test temperature shall be 180 6 4 F (82 6 2 C).11.6.2 The external test environment shall be air or water.11.6.3 Condition the specimens in accordance with TestMethod D159811.6.4 Leakage or separation at any joint tested at

45、less than1000 h at the sustained pressure as given in Table 2 shallconstitute failure in this test.11.7 Thermocycling:11.7.1 Summary of Test MethodThis test method describesa pass-fail test for thermally cycling assemblies comprised ofinsert fitting, crimp ring, and PEX tubing over a criticaltempera

46、ture range for a selected number of cycles whilesubjected to an internal pressure. The test provides a measureof resistance to failure due to the combined effects of differ-ential thermal expansion and creep of connections intended foruse up to and including 180 F (82 C).11.7.2 ApparatusA pressure s

47、ource capable of maintain-ing an internal pressure of 100 6 10 psi (690 6 69 kPa) on thespecimens is required. An immersion system shall consist oftwo water reservoirs controlled at 60 6 4 F (16 6 2 C) and180 6 4 F (82 6 2 C) into which the pressurized specimenswill be immersed. Either samples are c

48、ycled manually usingflexible connectors or alternately the hot and cold water iscycled over the test specimens automatically and returned tothe proper reservoir (Note 2).NOTE 2Automatic recycling may be accomplished by pumping fromeach reservoir through a delivery system having timer-actuated valves

49、 tospecimen troughs having synchronized, timer-actuated return drains. Anyautomatic apparatus shall provide for complete immersion of the testspecimen in the water.11.7.3 Specimen AssemblyTest six assemblies. Attach theassemblies to a common manifold in such a way to allowfree-end movement of the tubing. Close this specimen assem-bly with any suitable end closure that will allow free-endmounting and will not leak under the thermocycle conditions,and connect the specimen assembly to the pressure source.11.7.4 Pr