1、Designation: F2159 18F2159 18a 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 F21
2、59; the number 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 reapprov
3、al.1. Scope*1.1 This specification establishes requirements for sulfone plastic insert fittings and copper crimp rings for four sizes(38, 12, and 34 and 1) of cross-linked polyethylene (PEX) tubing that meet the requirements for Specification F876 or F3253 andpolyethylene of raised temperature (PE-R
4、T) tubing that meet the requirements of Specifications F2623 and F2769. These fittingsare intended for use in 100 psi (690 kPa) cold- and hot-water distribution systems operating at temperatures up to and including180 F (82 C). Included are the requirements for material, molded part properties, perf
5、ormance, workmanship, dimensions, andmarkings to be used on the fittings and rings.1.2 UnitsThe values stated in inch-pound units are to be regarded as standard. The values given in parentheses aremathematical conversions to SI units that are provided for information only and are not considered stan
6、dard.1.3 The following is an index of the appendix in this specification:GO/NO-GO Crimp Gauges Appendix X11.4 The following precautionary caveat pertains only to the test method portions, Sections 11 and 12, of this specification. Thisstandard does not purport to address all of the safety concerns,
7、if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatorylimitations prior to use.1.5 This international standard was developed in accordance with internatio
8、nally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D618 Practic
9、e for Conditioning Plastics for TestingD1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal PressureD1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology for Abbreviated Terms Relating to PlasticsD2122 Test M
10、ethod for Determining Dimensions of Thermoplastic Pipe and FittingsD6394 Specification for Sulfone Plastics (SP)F412 Terminology Relating to Plastic Piping SystemsF876 Specification for Crosslinked Polyethylene (PEX) TubingF1498 Specification for Taper Pipe Threads 60 for Thermoplastic Pipe and Fitt
11、ingsF1807 Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubingand SDR9 Polyethylene of Raised Temperature (PE-RT) TubingF2623 Specification for Polyethylene of Raised Temperature (PE-RT) SDR 9 TubingF2769 Specification for Polyethylene
12、 of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and DistributionSystems1 This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved April 1, 2018Nov. 1, 201
13、8. Published April 2018December 2018. Originally approved 2001. Last previous edition approved in 20142018 asF2159-14.-18. DOI: 10.1520/F2159-18.10.1520/F2159-18A.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book
14、of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technica
15、lly possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this sta
16、ndardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1F3253 Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water HydronicDistribution Systems2.2 ASME Standard:B 1.20.1 Pipe Threads General
17、 Purpose Inch32.3 NSF International Standard:ANSI/NSF Standard No. 14 for Plastic Piping Components and Related Materials4ANSI/NSF Standard No. 61 for Drinking Water System Components-Health Effects43. Terminology3.1 DefinitionsDefinitions are in accordance with Terminology F412 and abbreviations ar
18、e in accordance with TerminologyD1600, unless otherwise indicated.4. Classification4.1 This specification governs one class of fittings and copper crimp rings suitable for use with nominal size 38, 12 ,34 and 1size PEX tubing that meets the requirements of ASTM SpecificationsSpecification F876 or F3
19、253 and PE-RT tubing that meetsthe requirements 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 shall beunreinforced polysulfone (group 01, class 1, grades 1 or 2) or polyph
20、enylsulfone (group 03, class 1, grade 1 or 2) or unreinforcedpolyphenylsulfone/polysulfone blends (group 04, Class 1, grade 2) or reworked plastic in accordance with 5.1.1.NOTE 1Since fittings specified by this standard will be used in hot-and-cold water plumbing systems, a material used to manufact
21、ure fittings inaccordance with this specification must demonstrate qualities consistent with that application in addition to the performance requirements of thisspecification. Those qualifying characteristics include, but are not limited to, an established hydrostatic design basis (HDB) or stress de
22、sign basis (SDB)in accordance with PPI TR-3 or similar rating and a demonstration of resistance to the long-term effects of those chemicals normally found in potablewater at the maximum temperature stated in this specification.5.1.1 Rework MaterialClean rework material of the same commercial designa
23、tion, generated from the manufacturers ownproduction may be used by the same manufacturer, provided the fittings meet all of the requirements of this specification.Reworked material shall not be introduced at a ratio exceeding 25 %.5.2 Potable Water RequirementsProducts intended for the transport of
24、 potable water shall be evaluated, tested and certifiedfor conformance with ANSI/NSF Standard No. 61 or the health effects portion of ANSI/NSF Standard No. 14 by an acceptablecertifying organization when required by the regulatory authority having jurisdiction.5.3 Crimp RingsCrimp rings shall be man
25、ufactured and marked in accordance with the requirements of Specification F1807.6. Molded Part Properties6.1 Insert CrushThe fitting insert shall not crack, split, or shatter when tested in accordance with 12.1.6.2 SplayThe molded part shall be free of visible splay excepting some slight blushing at
26、 the gate location.7. Performance Requirements7.1 GeneralAll performance tests shall be performed on assemblies of fittings, crimp rings, and PEX tubing or PE-RT tubing,or both. Fittings and crimp rings shall meet the material and dimensional requirements of this standard. PEX tubing shall meet ther
27、equirements of Specification F876 or F3253. PE-RT tubing shall meet the requirements of Specifications F2623 and F2769.Assembly of test specimens shall be in accordance with Section 10. Use separate sets of assemblies for each performance testrequirement.7.2 Hydrostatic BurstAssemblies shall meet th
28、e minimum hydrostatic burst requirements shown in Table 1, when tested inaccordance with 11.5.7.3 Hydrostatic Sustained Pressure StrengthAssemblies shall meet the hydrostatic sustained pressure requirements shown inTable 2 when tested in accordance with 11.6.7.4 ThermocyclingAssemblies shall not lea
29、k or separate when thermocycled 1000 cycles between the temperatures of 60 F(16 C) and 180 F (82 C) when tested in accordance with 11.7.7.5 Excessive Temperature-Pressure Capability:7.5.1 GeneralAssemblies shall have adequate strength to accommodate short-term conditions, 30 days (720 h) of 210 F(99
30、 C) and 150 psi (1034 kPa) when tested in accordance with 11.8.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.4 Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http:/www
31、.nsf.org.F2159 18a28. Dimensions8.1 Dimensions and TolerancesThe dimensions and tolerances of fittings shall be as shown in Fig. 1, when measured inaccordance with 11.4.8.1.1 AlignmentThe maximum angular variation of any opening shall not exceed 1 off the true centerline axis.8.1.2 Tapered ThreadsFi
32、tting threads shall be American National Standard Taper Pipe Thread Form conforming toSpecification F1498.8.1.3 Straight ThreadsStraight pipe threads, intended for the making of a gasketed seal with taper pipe threads, shall be NPSMand conform to ASME B 1.20.1.9. Workmanship, Finish, and Appearance9
33、.1 The sealing surfaces of the insert shall be smooth and free of foreign material. The fitting walls shall be free of cracks, holes,blisters, voids, foreign inclusions, or other defects that are visible to the unaided eye and that affect the wall integrity.9.2 Except for the insert, the molded part
34、 shall be free of flash in excess of 0.005 in. Flash, mismatch, and witness markrequirements for the insert shall be in accordance with Fig. 1.10. Assembly10.1 Crimp JointsInsert fittings shall be joined to PEX tubing or PE-RT tubing by the compression of a copper crimp ringaround the outer circumfe
35、rence of the tubing forcing the tubing material into annular spaces formed by ribs on the fitting. Insertfittings and crimp rings shall meet the dimensional and material requirements of this standard. PEX tubing shall meet therequirements of SpecificationsSpecification F876 or F3253. PE-RT tubing sh
36、all meet the requirements of Specifications F2623 andF2769. The dimensions and out-of-roundness of the crimp ring after it has been crimped shall be in accordance with Table 3.10.1.1 Crimping ProcedureTo affix the insert fitting to the tubing with the crimp ring, the crimping procedure shall be asfo
37、llows: slide the crimp ring onto the tubing, insert the ribbed end of the fitting into the end of the tubing until the tubing contactsthe shoulder of the fitting or tube stop. The crimp ring shall then be positioned on the tubing so the edge of the crimp ring is 18in. to 14 in. (3.2 to 6.4 mm) from
38、the end of the tube. The jaws of the crimping tool shall be centered over the crimp ring and thetool shall be held so that the crimping jaws are approximately perpendicular to the axis of the barb. The jaws of the crimping toolshall be closed around the crimp ring, compressing the crimp ring onto th
39、e tubing. The crimp ring shall not be crimped more thanonce. Each crimp shall be checked to determine conformance to the after crimped dimensional requirements of Table 3.11. Test Methods11.1 ConditioningCondition specimens at 73 6 4 F (23 6 2 C) and 50 6 5 % relative humidity for not less than 4 h
40、priorto testing. Test Method D618 shall be used to the extent possible as a guide to other conditions.11.2 Test ConditionsConduct the tests in the standard laboratory atmosphere at 73 6 4 F (23 6 2 C) and 50 6 5 % relativehumidity unless otherwise specified in the test methods or in this specificati
41、on.TABLE 1 Minimum Hydrostatic Burst Strength Requirements forFitting, Crimp Ring, and PEX Tubing or PE-RT TubingAssembliesNominalTubing SizeMinimum Burst Pressures atDifferent Temperaturesin. psigA at73.4F (kPa) at(23C) psigA at180F (kPa) at(82.2C)38 620 (4275) 275 (1896)12 480 (3309) 215 (1482)34
42、andlarger475 (3275) 210 (1448)A The 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 (5.86 MPa).TABLE 2 Minimum Hydrostatic Sustained Pressure Requirementsfor Fitting, Crimp Ring and PEX or PE-RT Tubing AssembliesA,BNominalTubing Size Pre
43、ssure Required for Test, psig (kPa)in. 180 F (82.2 C)38 250 (1724)12 195 (1344)34 and larger 190 (1310)A The fiber stress to derive this test pressure is: 770 psi (5.31 MPa) at 180 F(82.2 C).B Test duration is 1000 h.F2159 18a3FIG. 1 Fitting Insert Dimensions and TolerancesF2159 18a411.3 SamplingA s
44、ample of the fittings, crimp rings, and PEX tubing sufficient to determine conformance with thisspecification shall be taken at random.11.4 DimensionsAny randomly selected fitting or fittings and crimp ring or crimp rings shall be used to determine dimensions.Measurements shall be made in accordance
45、 with Test Method D2122. Determine the diameters by making measurements at fourlocations spaced at approximately 45 apart around the circumference.11.5 Burst PressureDetermine the minimum burst pressure in accordance with Test Method D1599 on at least six assembliesfor each temperature in Table 1. L
46、eakage or separation at any of the joints tested, or from the fitting itself, at less than the minimumburst requirements for the temperatures specified in Table 1 shall constitute a failure in this test.11.6 Sustained Hydrostatic PressurePerform the test on at least six assemblies in accordance with
47、 Test Method D1598, exceptfor 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 Test Method D159811.6.4 Leakage or separation at any joint tested at less than 1000 h at the
48、sustained pressure as given in Table 2 shall constitutefailure in this test.11.7 Thermocycling:11.7.1 Summary of Test MethodThis test method describes a pass-fail test for thermally cycling assemblies comprised of insertfitting, crimp ring, and PEX tubing over a critical temperature range for a sele
49、cted number of cycles while subjected to an internalpressure.The test provides a measure of resistance to failure due to the combined effects of differential thermal expansion and creepof connections intended for use up to and including 180 F (82 C).11.7.2 ApparatusA pressure source capable of maintaining an internal pressure of 100 6 10 psi (690 6 69 kPa) on thespecimens is required. An immersion system shall consist of two water reservoirs controlled at 60 6 4 F (16 6 2 C) and 1806 4 F (82 6 2 C)
