1、Designation: F2159 10An 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 nu
2、mber 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. Scop
3、e*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)plastic tubing an polyethylene of raised temperature (PE-RT)tubing. These fittings are intended for use in 100 psi (690 k
4、Pa)cold- and hot-water distribution systems operating at tempera-tures up to and including 180F (82C). Included are therequirements for material, molded part properties, perfor-mance, workmanship, dimensions, and markings to be used onthe fittings and rings.1.2 UnitsThe values stated in inch-pound u
5、nits 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 index of the appendix in thisspecification:GO/NO-GO Crimp Gauges Appendix X11.4 The following prec
6、autionary 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. It is the responsibilityof the user of this standard to establish appropriate safety andhealth pr
7、actices and determine the applicability of regulatoryrequirements prior to use.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD1599 Test Method for Resistance to Short-
8、Time HydraulicPressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology for Abbreviated Terms Relating toPlasticsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD6394 Specification for Sulfone Plastics (SP)F412 Terminology Relating to Plastic Piping SystemsF876
9、Specification for Crosslinked Polyethylene (PEX)TubingF877 Specification for Crosslinked Polyethylene (PEX)Plastic Hot- and Cold-Water Distribution SystemsF1498 Specification for Taper Pipe Threads 60 for Ther-moplastic Pipe and FittingsF1807 Specification for Metal Insert Fittings Utilizing aCopper
10、 Crimp Ring for SDR9 Cross-linked Polyethylene(PEX) TubingF2623 Specification for Polyethylene of Raised Tempera-ture (PE-RT) SDR 9 TubingF2769 Specification for Polyethylene of Raised Tempera-ture (PE-RT) Plastic Hot and Cold-Water Tubing andDistribution Systems2.2 ASME Standard:B 1.20.1 Pipe Threa
11、ds 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 Effects43. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412 and abbrevi
12、ations are in accordance with Termi-nology D1600, unless otherwise indicated.4. Classification4.1 This specification governs one class of fittings andcopper crimp rings suitable for use with nominal size38 ,12 ,341This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Sy
13、stems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved Feb. 1, 2010. Published March 2010. Originallyapproved 2001. Last previous edition approved in 2009 as F2159-09. DOI:10.1520/F2159-10.2For referenced ASTM standards, visit the ASTM website, www.astm.or
14、g, 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 Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4
15、Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.and 1
16、 size PEX tubing that meets the requirements of ASTMSpecifications F876 or F877 and PE-RT tubing that meets therequirements of Specifications F2623 and F2769.5. Materials and Manufacture5.1 MaterialFittings shall be molded from sulfone plastic(SP) as specified in Specification D6394. The material sh
17、all 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 2, grade 1) or reworked plastic in accordance with 5.1.1.Pigmented products can exceed the maximum specific grav
18、itylisted provided that they comply with all other properties listedin Specification D6394 Table SP.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 qualit
19、iesconsistent with that application in addition 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 ademons
20、tration of resistance to the long-term effects 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
21、 manufacturer,provided the fittings meet all of 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 ANS
22、I/NSF Standard No. 61 orthe health effects portion 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
23、. Molded Part Properties6.1 Insert CrushThe fitting 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 shal
24、l be performed onassemblies of fittings, crimp 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 Specifications F876 or F877.PE-RT tubing shall meet the requirements o
25、f SpecificationsF2623 and F2769. Assembly of test specimens shall be inaccordance with Section 10. Use separate sets of assemblies foreach performance test requirement.7.2 Hydrostatic BurstAssemblies shall meet the mini-mum hydrostatic burst requirements shown in Table 1, whentested in accordance wi
26、th 11.5.7.3 Hydrostatic Sustained Pressure StrengthAssembliesshall 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 of60F (16C) and 180
27、F (82C) when tested in accordance with11.7.7.5 Excessive 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 accordance with11.8.8. Dimensions8.1 Dimensions and
28、TolerancesThe dimensions and tol-erances of fittings shall be as shown in Fig. 1, when measuredin accordance 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 Ta
29、per Pipe Thread Form conforming toSpecification F1498.8.1.3 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
30、andfree of foreign material. The fitting walls shall 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, mism
31、atch, and witness markrequirements for the insert shall be in accordance with Fig. 1.TABLE 1 Minimum Hydrostatic Burst Strength Requirements forFitting, Crimp Ring, and PEX Tubing or PE-RT TubingAssembliesNominalTubing SizeMinimum Burst Pressures atDifferent Temperaturesin.psigAat73.4F(kPa) at(23C)p
32、sigAat180F(kPa) at(82.2C)38 620 (4275) 275 (1896)12 480 (3309) 215 (1482)34 and larger 475 (3275) 210 (1448)AThe fiber stress to derive this test pressure is: at 73.4F (23.0C) 1900 psi(13.10 MPa) at 180F (82.2C) 850 psi (5.86 MPa).TABLE 2 Minimum Hydrostatic Sustained PressureRequirements for Fittin
33、g, Crimp Ring and PEX or PE-RT TubingAssembliesA,BNominalTubing SizePressure Required for Test, psig (kPa)in. 180F (82.2C)38 250 (1724)12 195 (1344)34 and larger 190 (1310)AThe fiber stress to derive this test pressure is: 770 psi (5.31 MPa) at 180 F(82.2C).BTest duration is 1000 h.F2159 10210. Asse
34、mbly10.1 Crimp JointsInsert fittings shall be joined to PEXtubing or PE-RT tubing by the compression of a copper crimpring 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-si
35、onal and material requirements of this standard. PEX tubingshall meet the requirements of Specifications F876 or F877.PE-RT tubing shall meet the requirements of SpecificationsF2623 and F2769. The dimensions and out-of-roundness of thecrimp ring after it has been crimped shall be in accordance withT
36、able 3.10.1.1 Crimping ProcedureTo affix the insert fitting to thetubing with the crimp ring, the crimping procedure shall be asfollows: slide the crimp ring onto the tubing, insert the ribbedend of the fitting into the end of the tubing until the tubingFIG. 1 Fitting Insert Dimensions and Tolerance
37、sF2159 103contacts 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. (3.2 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 t
38、hat 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 crimp ring onto the tubing. The crimp ringshall not be crimped more than once. Each crimp shall bechecked to determine conformance to the a
39、fter crimped dimen-sional requirements of Table 3.11. Test Methods11.1 ConditioningCondition specimens at 73 6 4F (236 2C) and 50 6 5 % relative humidity for not less than 4 hprior to testing. Test Method D618 shall be used to the extentpossible as a guide to other conditions.11.2 Test ConditionsCon
40、duct the tests in the standardlaboratory atmosphere at 73 6 4F (23 6 2C) and 5065%relative humidity unless otherwise specified in the test methodsor in this specification.11.3 SamplingA sample of the fittings, crimp rings, andPEX tubing sufficient to determine conformance with thisspecification shal
41、l be taken at random.11.4 DimensionsAny randomly selected fitting or fittingsand crimp ring or crimp rings shall be used to determinedimensions. Measurements shall be made in accordance withTest Method D2122. Determine the diameters by makingmeasurements at four locations spaced at approximately 45a
42、part around the circumference.11.5 Burst PressureDetermine the minimum burst pres-sure in accordance with Test Method D1599 on at least sixassemblies for each temperature in Table 1. Leakage orseparation at any of the joints tested, or from the fitting itself,at less than the minimum burst requireme
43、nts 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 assemblies in accordance with Test Method D1598,except for the following:11.6.1 Test temperature shall be 180 6 4F (82 6 2C).11.6.2 The external t
44、est environment shall be air or water.11.6.3 Fill the specimens with water at a temperature of atleast 120F (50C).11.6.4 Leakage or separation at any joint tested at less than1000 h at the sustained pressure as given in Table 2 shallconstitute failure in this test.11.7 Thermocycling:11.7.1 Summary o
45、f Test MethodThis test method de-scribes a pass-fail test for thermally cycling assemblies com-prised of insert fitting, crimp ring, and PEX tubing over acritical temperature range for a selected number of cycles whilesubjected to an internal pressure. The test provides a measureof resistance to fai
46、lure due to the combined effects of differ-ential thermal expansion and creep of connections intended foruse up to and including 180F (82C).11.7.2 ApparatusA pressure source capable of maintain-ing an internal pressure of 100 6 10 psi (690 6 69 kPa) on thespecimens is required. An immersion system s
47、hall consist oftwo water reservoirs controlled at 60 6 4F (16 6 2C) and180 6 4F (82 6 2C) into which the pressurized specimenswill be immersed. Either samples are cycled manually usingflexible connectors or alternately the hot and cold water iscycled over the test specimens automatically and returne
48、d tothe proper reservoir (Note 2).NOTE 2Automatic recycling may be accomplished by pumping fromeach reservoir through a delivery system having timer-actuated valves tospecimen troughs having synchronized, timer-actuated return drains. Anyautomatic apparatus shall provide for complete immersion of th
49、e 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 ProcedurePressurize the specimen assembly withair to 100 6 10 psi (690 6 69 kPa) and check for leaks.Eliminate any leaks befor
