1、Designation: F2829/F2829M 15Standard Specification forMetric- and Inch-Sized Crosslinked Polyethylene (PEX) PipeSystems1This standard is issued under the fixed designation F2829/F2829M; the number immediately following the designation indicates the yearof original adoption or, in the case of revisio
2、n, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers performance requirements, testmethods, and marking requirements for metric-
3、and inch-sizedsystem components (electrofusion and mechanical fittings)when joined with metric- or inch-sized PEX pipe (SpecificationF2788) as a system, intended for use up to and including amaximum working temperature of 200F 93C . The follow-ing performance requirements are described for the fitti
4、ngs 68F 20C hydrostatic strength, 176F 80C hydrostaticstrength, short-term internal pressure resistance, resistance totensile loads, cohesive resistance for electrofusion fittings atboth the minimum and maximum recommended temperatures,impact resistance for saddle fittings, and leak tightness and pu
5、llout tests for mechanical fittings. The metric- and inch-sizedcomponents covered by this specification are intended for theabove-ground and buried pressure piping applications, such asindustrial metric PEX joints;metric PEX pipe; metric PEX systemSUPPLEMENTARY REQUIREMENTSGOVERNMENT/MILITARY PROCUR
6、EMENTThese requirements apply only to federal/military procurement, not domestic sales or transfers.S1.1 Responsibility for InspectionUnless otherwise speci-fied in the contract or purchase order, the producer is respon-sible for the performance of all inspection and test require-ments specified her
7、ein. The producer may use his own or anyother suitable facilities for the performance of the inspectionand test requirements specified herein, unless the purchaserdisapproves. The purchaser shall have the right to perform anyof the inspections and tests set forth in this specification wheresuch insp
8、ections are deemed necessary to ensure that materialconforms to prescribed requirements.NOTE S1In U. S. Federal contracts, the contractor is responsible forinspection.S1.1.1 Packaging and Marking for U.S. Government Pro-curement: .S1.1.2 PackagingUnless otherwise specified in thecontract, the materi
9、als shall be packaged in accordance withthe suppliers standard practice in a manner ensuring arrival atdestination in satisfactory condition and which will be accept-able to the carrier at lowest rates. Containers and packing shallcomply with Uniform Freight Classification rules or NationalMotor Fre
10、ight Classification rules.S2.2 Marking Marking for shipment shall be in accor-dance with Fed. Std. No. 123 for civil agencies and MIL-STD-129 for military agencies.NOTE S2The inclusion of U.S. Government procurement require-ments should not be construed as an indication that the U.S. Governmentuses
11、or endorses the products described in this specification.F2829/F2829M 153APPENDIXES(Nonmandatory Information)X1. APPENDIXX1.1 Hydrostatic design stresses recommended by the Plas-tic Pipe Institute are used to pressure rate PEX plastic pipe.These design stresses are based on the 100,000-h hydrostatic
12、strength of the pipe obtained in accordance with Test MethodD2837. Additional information regarding the method of testand other criteria used in developing these hydrostatic designstresses may be obtained from the Plastics Pipe Institute. SeeTable X1.1 for SDR 9 example.X1.2 Independent methods for
13、determining the hydrostaticdesign stress of fittings have yet to be developed due to thecomplicating effects of fitting geometry. Instead, fittings andassembled systems carry an implied pressure rating equivalentto that of the corresponding pipe on the basis of actualequivalent hydrostatic performan
14、ce of assembled systems forperiods exceeding 10,000 h. The sustained pressure require-ments of 6.2 for fittings tested as assembled systems are basedon stress rupture data for pipe.X1.3 The hydrostatic design stresses are not suitable formaterials that show a negative departure from a straight linep
15、lot of log versus stress versus log time to failure. All of thedata available to date on PEX pipe materials and fittingassemblies, tested in accordance with Test Method D2837,meet this requirement. Experience of the industry indicates thatPEX piping systems made from components meeting therequiremen
16、ts of this specification give satisfactory serviceunder normal conditions at these temperature-pressure ratings.X2. DESIGN, ASSEMBLY, AND INSTALLATION CONSIDERATIONSX2.1 AssemblyX2.1.1 Compression-Type Fittings: Assemble in accordancewith the manufacturers instructions. Compression-type fittingsare
17、likely to include inserts and ferrules, or O-rings which forman essential part of the fittings assembly and should not beomitted.X2.1.2 Insert Fittings: A number of techniques have beendeveloped where a fitting is firmly secured to PEX pipe. Thefitting is placed inside the tube and a tool is employe
18、d to crimpa metallic lock ring around the pipe outside diameter adjacentto the fitting. This provides a mechanical lock with the pipebeing wedged securely between the ring and the insert fitting.X2.1.3 Mechanical Fittings: A number of fitting systemshave been developed that can be described as mecha
19、nicalcompression-type joining. They are comprised of fittings thatprovide a seal on the outer surface of PEX pipe. The actualsealing is affected by the following methods:X2.1.3.1 Cold Flaring: Utilize a cold flaring tool, whereinthe pipe outside diameter is expanded mechanically. Theexpanded or flar
20、ed end is then secured between a fitting. Flareconfiguration may vary depending on the particular toolemployed. The flared surface generally serves as the sealingarea between the pipe and fitting.(1) Elastomeric cone with threaded nut.(2) Ferrule with a threaded nut. The above compression-type fitti
21、ngs should be assembled in accordance with themanufacturers recommendations.X2.1.3.2 Electrofusion Fittings: Assemble in accordancewith the manufacturers instructions. For applications up to140F 60C, electrofusion fittings are made from polyethyl-ene. For higher temperature applications, electrofusi
22、on fittingsare made from a PEX material.X2.1.4 The manufacturer should be consulted regardingauthorized fittings for use with PEX pipe.X2.2 InstallationX2.2.1 Storage and Handling: PEX fittings should be storedunder cover to avoid unnecessary dirt accumulation andlong-term exposure to sunlight. Care
23、 should be used inhandling to ensure that unnecessary abuse, such as dropping onconcrete, nicking or denting, is avoided.X2.2.2 Pressure Testing: A pressure test with water at 100psi 0.69 MPa on the system excluding the hot water heater isadvisable to test for fitting leakage.X2.2.3 Soldering in the
24、 Area: Soldered metal fittings shouldnot be made closer than 18 in. 460 mm to an installedplastic-to-metal adapter in the same water line.TABLE X1.1 Hydrostatic Design Stresses and Pressure Ratingsfor SDR 9 PEX Pipe for Hot Water Distribution SystemsRatedTemperatureHydrostaticDesign StressPressure R
25、atingfor WaterF C psi MPa psi MPa73.4 23 630 4.32 160 1.10180 82 400 2.76 100 0.69200 93 315 2.17 80 0.56F2829/F2829M 154X3. OPTIONAL PERFORMANCE QUALIFICATION AND IN-PLANT QUALITY-CONTROL PROGRAM FOR PEX PIPINGSYSTEM COMPONENTSX3.1 ScopeX3.1.1 The following program covers performance qualifi-cation
26、 and in-plant quality control for component design andmanufacture respectively to provide reasonable assurance thatPEX components supplied under this specification shall con-sistently meet its requirements.X3.2 Performance QualificationsX3.2.1 Performance qualification tests shall be run initiallyon
27、 each component design, size, and formulation in accordancewith the requirements of this specification. The test resultsshall be independently certified and shall be made available tothe purchaser on request.X3.3 In-Plant Quality ControlX3.3.1 MaterialThe pipe material shall be PEX asdefined in Sect
28、ion 4 of this specification. The manufacturershall so certify.X3.3.2 Quality-Control TestingPipe and fitting quality-control tests shall be run for each extrusion line or mold cavityin accordance with the requirements of this specification at afrequency agreed upon between the purchaser and the manu
29、-facturer. The program outlined in Table X3.1 is recommended.The test results shall be recorded and filed for inspection onrequest. Should a component fail to meet the specification inany test, production should be sampled back to the previousacceptable test result and tested to determine which comp
30、o-nents produced in the interim do not meet the requirement.Components that do not meet the requirements of this specifi-cation shall be rejected. See Table Table X3.2.X3.3.3 MarkingFittings shall be marked to identify themanufacturer and shall be coded or placed in dated containersto show the date
31、of manufacture.SUMMARY OF CHANGESCommittee F17 has identified the location of selected changes to this standard since the last issue (F282910)that may impact the use of this standard.(1) Added inch pipe sizes.(2) Added requirement that pipe and fittings shall be the samedimensionsinch-to-inch and me
32、tric-to-metric.(3) Revised upper pipe size range for metric pipe from 630 mmto 1000 mm to be consistent with Specification F2788.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard ar
33、e expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not
34、revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which yo
35、u may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United
36、 States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may als
37、o be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ X3.1 Suggested Quality-Control ProgramComponent Property Frequency RequirementFitting Dimensions hourly 6.2A,BBurst pressure daily 6.3A,BASpecification F2788 for crosslinked polyethylene (PEX) pipe.BThis specification, F2829.TABLE X3.2 Type Test ProgramComponent Property RequirementFittings sustained pressure 6.2A,BThermocycling 6.3A,BPotable water NSF 14ASpecification F2788 for crosslinked polyethylene (PEX) pipe.BThis specification, F2829.F2829/F2829M 155
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