1、Designation: F2159 14F2159 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 F215
2、9; 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 reapprova
3、l.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 andpolyethylene of raised temperature (PE-RT) tubing
4、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 including180F (82C).180 F (82 C). Included are the requirements for material, molded part properties, per
5、formance, workmanship,dimensions, and markings 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 sta
6、ndard.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 safety, health, and healthenvironmental practices and determine the applicabilityof regulatory requirementslimitations prior to use.1.5 This international standard was developed in
8、accordance with internationally 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 AS
9、TM Standards:2D618 Practice 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 Relati
10、ng to PlasticsD2122 Test Method 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 T
11、hermoplastic Pipe and FittingsF1807 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 Spec
12、ification for Polyethylene 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 approve
13、d Aug. 1, 2014April 1, 2018. Published September 2014April 2018. Originally approved 2001. Last previous edition approved in 20112014 asF2159-11.-14. DOI: 10.1520/F2159-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Ann
14、ual Book 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
15、 technically 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
16、 this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 ASME Standard:B 1.20.1 Pipe Threads General Purpose Inch32.3 NSF International Standard:ANSI/NSF Standard No. 14 for Plastic Piping Components and Related Materials4ANS
17、I/NSF Standard No. 61 for Drinking Water System Components-Health Effects43. Terminology3.1 DefinitionsDefinitions are in accordance with Terminology F412 and abbreviations are in accordance with TerminologyD1600, unless otherwise indicated.4. Classification4.1 This specification governs one class o
18、f fittings and copper crimp rings suitable for use with nominal size 38, 12 ,34 and 1size PEX tubing that meets the requirements of ASTM Specifications F876 and PE-RT tubing that meets the requirements ofSpecifications F2623 and F2769.5. Materials and Manufacture5.1 MaterialFittings shall be molded
19、from sulfone plastic (SP) as specified in Specification D6394. The material shall beunreinforced polysulfone (group 01, class 1, grades 1 or 2) or polyphenylsulfone (group 03, class 1, grade 1 or 2) or unreinforcedpolyphenylsulfone/polysulfone blends (group 04, Class 1, grade 2) or reworked plastic
20、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 manufacture fittings inaccordance with this specification must demonstrate qualities consistent with that application in addition to the performance requir
21、ements of thisspecification. Those qualifying characteristics include, but are not limited to, an established hydrostatic design basis (HDB) or stress design basis (SDB)in accordance with PPI TR-3 or similar rating and a demonstration of resistance to the long-term effects of those chemicals normall
22、y found in potablewater at the maximum temperature stated in this specification.5.1.1 Rework MaterialClean rework material of the same commercial designation, generated from the manufacturers ownproduction may be used by the same manufacturer, provided the fittings meet all of the requirements of th
23、is specification.Reworked material shall not be introduced at a ratio exceeding 25 %.5.2 Potable Water RequirementsProducts intended for the transport of potable water shall be evaluated, tested and certifiedfor conformance with ANSI/NSF Standard No. 61 or the health effects portion of ANSI/NSF Stan
24、dard No. 14 by an acceptablecertifying organization when required by the regulatory authority having jurisdiction.5.3 Crimp RingsCrimp rings shall be manufactured and marked in accordance with the requirements of Specification F1807.6. Molded Part Properties6.1 Insert CrushThe fitting insert shall n
25、ot 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 the gate location.7. Performance Requirements7.1 GeneralAll performance tests shall be performed on assemblies of fittings, crimp rings, and PEX t
26、ubing or PE-RT tubing,or both. Fittings and crimp rings shall meet the material and dimensional requirements of this standard. PEX tubing shall meet therequirements of Specification F876. PE-RT tubing shall meet the requirements of Specifications F2623 and F2769. Assembly oftest specimens shall be i
27、n accordance with Section 10. Use separate sets of assemblies for each performance test requirement.7.2 Hydrostatic BurstAssemblies shall meet the minimum hydrostatic burst requirements shown in Table 1, when tested inaccordance with 11.5.7.3 Hydrostatic Sustained Pressure StrengthAssemblies shall m
28、eet the hydrostatic sustained pressure requirements shown inTable 2 when tested in accordance with 11.6.7.4 ThermocyclingAssemblies shall not leak or separate when thermocycled 1000 cycles between the temperatures of 60F(16C) and 180F (82C)60 F (16 C) and 180 F (82 C) when tested in accordance with
29、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 210210 F (99 C) (99 C) and 150 psi (1034 kPa) when tested in accordance with 11.8.3 Available from American National Standards Institute (A
30、NSI), 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.nsf.org.F2159 1828. Dimensions8.1 Dimensions and TolerancesThe dimensions and tolerances of fittings shall be as shown
31、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 ThreadsFitting threads shall be American National Standard Taper Pipe Thread Form conforming toSpecification F1498.8.1.3 Straight
32、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 Appearance9.1 The sealing surfaces of the insert shall be smooth and free of foreign material. The fitting walls shall be free of cr
33、acks, 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 shall be free of flash in excess of 0.005 in. Flash, mismatch, and witness markrequirements for the insert shall be in a
34、ccordance 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 circumference of the tubing forcing the tubing material into annular spaces formed by ribs on the fitting. Insertfittings and cri
35、mp rings shall meet the dimensional and material requirements of this standard. PEX tubing shall meet therequirements of Specifications F876. PE-RT tubing shall meet the requirements of Specifications F2623 and F2769. Thedimensions and out-of-roundness of the crimp ring after it has been crimped sha
36、ll 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 asfollows: slide the crimp ring onto the tubing, insert the ribbed end of the fitting into the end of the tubing until the tubing contactsthe shoul
37、der 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 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 ar
38、e 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 the tubing. The crimp ring shall not be crimped more thanonce. Each crimp shall be checked to determine conformance to the after crimped dimensio
39、nal requirements of Table 3.11. Test Methods11.1 ConditioningCondition specimens at 73 6 4F4 F (23 6 2C)2 C) and 50 6 5 % relative humidity for not less than4 h prior to testing. Test Method D618 shall be used to the extent possible as a guide to other conditions.TABLE 1 Minimum Hydrostatic Burst St
40、rength 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 andlarger475 (3275) 210 (1448)A The fib
41、er stress to derive this test pressure is: at 73.4F (23.0C)73.4 F(23.0 C) 1900 psi (13.10 MPa) at 180F (82.2C)180 F (82.2 C) 850 psi (5.86MPa).TABLE 2 Minimum Hydrostatic Sustained Pressure Requirementsfor Fitting, Crimp Ring and PEX or PE-RT Tubing AssembliesA,BNominalTubing Size Pressure Required
42、for Test, psig (kPa)in. 180F180 F (82.2C)(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 180180 F (82.2C).(82.2 C).B Test duration is 1000 h.F2159 183FIG. 1 Fitting Insert Dimensions and TolerancesF2159 18411.2 Test
43、ConditionsConduct the tests in the standard laboratory atmosphere at 73 6 4F4 F (23 6 2C)2 C) and 50 6 5 %relative humidity unless otherwise specified in the test methods or in this specification.11.3 SamplingA sample of the fittings, crimp rings, and PEX tubing sufficient to determine conformance w
44、ith 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 with Test Method D2122. Determine the diameters by making measurements at fourlocations
45、 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. Leakage or separation at any of the joints tested, or from the fitting itself, at less th
46、an 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 Test Method D1598, exceptfor the following:11.6.1 Test temperature shall be 180 6 4F4 F
47、 (82 6 2C).2 C).11.6.2 The external test environment shall be air or water.11.6.3 FillCondition the specimens with water at ain accordance with Test Method D1598 temperature of at least 120F (50C).11.6.4 Leakage or separation at any joint tested at less than 1000 h at the sustained pressure as given
48、 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 selected number of cycles while
49、 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 180F (82C).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 4F4 F (16 6 2C)2 C) and18064F4
