1、Designation: F2769 18 An American National StandardStandard Specification forPolyethylene of Raised Temperature (PE-RT) Plastic Hot andCold-Water Tubing and Distribution Systems1This standard is issued under the fixed designation F2769; the number immediately following the designation indicates the
2、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. Scope*1.1 This specification establishes requirements for pol
3、yeth-ylene of raised temperature (PE-RT) plastic hot- and cold-water tubing and distribution systems components made in onestandard dimension ratio and intended for 100 psig (6.9 bar)water service up to and including a maximum workingtemperature of 180 F (82 C). Components are comprised oftubing, fi
4、ttings, valves and manifolds. Tubing may incorporatean optional polymeric inner, middle or outer layer. Testing offittings and PE-RT tubing to the requirements of this standardindicate that these fittings are appropriate for use with PE-RTpiping systems. Requirements and test methods are includedfor
5、 materials, workmanship, dimensions and tolerances, burstpressure, sustained pressure, oxidative resistance, temperaturecycling tests, bend strength and environmental stress cracking.Also included are tests related to system malfunctions. Thecomponents covered by this specification are intended for
6、usein residential and commercial, hot and cold, potable waterdistribution systems.1.2 The text of this specification references notes, footnotes,and appendixes which provide explanatory material. Thesenotes and footnotes (excluding those in tables and figures) shallnot be considered as requirements
7、of the specification.NOTE 1Suggested hydrostatic design stresses and hydrostatic pressureratings for tubing and fittings are listed in Appendix X1. UV labelingguidelines are provided in Appendix X2. Design, assembly, and installa-tion considerations are provided in Appendix X3. An optional perfor-ma
8、nce qualification and an in-plant quality control program are recom-mended in Appendix X4.1.3 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
9、 standard.1.4 The following safety hazards caveat pertains only to thetest methods portion, Section 7, of this specification. Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropr
10、iate safety, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopme
11、nt 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 for TestingD1598 Test Method for Time-to-Failure of Plastic PipeUnder Consta
12、nt Internal PressureD1599 Test Method for Resistance to Short-Time HydraulicPressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1898 Practice for Sampling of Plastics (Withdrawn 1998)3D2122 Test Method for Determining Dimensions of Ther-moplasti
13、c Pipe and FittingsD2683 Specification for Socket-Type Polyethylene Fittingsfor Outside Diameter-Controlled Polyethylene Pipe andTubingD2749 Symbols for Dimensions of Plastic Pipe FittingsD2837 Test Method for Obtaining Hydrostatic Design Basisfor Thermoplastic Pipe Materials or Pressure Design Basi
14、sfor Thermoplastic Pipe ProductsD3261 Specification for Butt Heat Fusion Polyethylene (PE)Plastic Fittings for Polyethylene (PE) Plastic Pipe andTubingD3350 Specification for Polyethylene Plastics Pipe and Fit-tings MaterialsD3895 Test Method for Oxidative-Induction Time of Poly-olefins by Different
15、ial Scanning Calorimetry1This test method is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.26 on OlefinBased Pipe.Current edition approved Aug. 1, 2018. Published August 2018. Originallyapproved in 2009. Last previous editi
16、on approved in 2016 as F276916. DOI:10.1520/F2769-18.2For 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.3The las
17、t approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in a
18、ccordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1F412 Terminology Relating to
19、 Plastic Piping SystemsF1055 Specification for Electrofusion Type PolyethyleneFittings for Outside Diameter Controlled Polyethyleneand Crosslinked Polyethylene (PEX) Pipe and TubingF1282 Specification for Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Composite Pressure PipeF1290 Practice for Electro
20、fusion Joining Polyolefin Pipe andFittingsF1473 Test Method for Notch Tensile Test to Measure theResistance to Slow Crack Growth of Polyethylene Pipesand ResinsF1960 Specification for Cold Expansion Fittings with PEXReinforcing Rings for Use with Cross-linked Polyethylene(PEX) TubingF1807 Specificat
21、ion for Metal Insert Fittings Utilizing aCopper Crimp Ring for SDR9 Cross-linked Polyethylene(PEX) Tubing and SDR9 Polyethylene of Raised Tem-perature (PE-RT) TubingF2023 Test Method for Evaluating the Oxidative Resistanceof Crosslinked Polyethylene (PEX) Pipe, Tubing andSystems to Hot Chlorinated W
22、aterF2159 Specification for Plastic Insert Fittings Utilizing aCopper Crimp Ring for SDR9 Cross-linked Polyethylene(PEX) Tubing and SDR9 Polyethylene of Raised Tem-perature (PE-RT) TubingF2620 Practice for Heat Fusion Joining of Polyethylene Pipeand FittingsF2735 Specification for Plastic Insert Fit
23、tings For SDR9Cross-linked Polyethylene (PEX) and Polyethylene ofRaised Temperature (PE-RT) TubingF2080 Specification for Cold-Expansion Fittings with MetalCompression-Sleeves for Crosslinked Polyethylene (PEX)Pipe and SDR9 Polyethylene of Raised Temperature(PE-RT) Pipe2.2 ANSI Standard:4B36.10 Stan
24、dards Dimensions of Steel Pipe (NTS)Z 17.1 Preferred Numbers2.3 Federal Standard:5FED-STD-123 Marking for Shipment (Civil Agencies)2.4 Military Standard:5MIL-STD-129 Marking for Shipment and Storage2.5 PPI Standards:6PPI TR-3 Policies and Procedures for Developing Hydro-static Design Basis (HDB), Hy
25、drostatic Design Stresses(HDS), Pressure Design Basis (PDB), Strength DesignBasis (SDB), and Minimum Required Strength (MRS)Ratings for Thermoplastic Piping Materials or PipePPI TR-4 PPI Listing of Hydrostatic Design Basis (HDB),Strength Design Basis (SDB), Pressure Design Basis(PDB) and Minimum Req
26、uired Strength (MRS) Ratingsfor Thermoplastic Piping Materials or Pipe2.6 NSF Standards:7NSF 14 Standard No. 14 for Plastic Piping Components andRelated MaterialsNSF 61 Drinking Water System Components Health Ef-fects2.7 ISO Standard:8ISO 13760 : Plastics pipes for the conveyance of fluids underpres
27、sure - Miners rule - Calculation method for cumu-lative damage3. Terminology3.1 Terminology used in this standard is in accordance withTerminologies F412, D1600, and D2749 unless otherwisespecified. The abbreviation for polyethylene of raised tempera-ture is PE-RT. Plastic tubing denotes a particula
28、r diameterschedule of plastic pipe in which outside diameter of the tubingis equal to the nominal size plus18 in. Plastic pipe outsidediameter schedule conforms to ANSI B36.10.3.2 standard dimension ratio (SDR), na specific ratio ofthe average specified outside diameter to the minimum speci-fied wal
29、l thickness (D0/t) for outside diameter-controlled plas-tic pipe, the value of which is derived by adding one to thepertinent number selected from the ANSI Preferred NumberSeries 10. F4123.2.1 DiscussionFor PE-RT-tubing, it is calculated bydividing the average outside diameter of the tubing in inche
30、s orin millimeters by the minimum wall thickness in inches ormillimeters. If the wall thickness calculated by this formula isless than 0.070 in. (1.78 mm) it shall be arbitrarily increased to0.070 in. except for sizes516 in. and smaller. The SDR valuesshall be rounded to the nearest 0.53.3 Definitio
31、ns of Terms Specific to This Standard:3.3.1 hydrostatic design stress (HDS), nthe estimatedmaximum tensile stress the material is capable of withstandingcontinuously with a high degree of certainty that failure of thetube will not occur. This stress is circumferential when internalhydrostatic water
32、pressure is applied. For materials withHydrostatic Strength Classification 3 or 4 per SpecificationD3350, the HDS is equal to the hydrostatic design basis (HDB)times the design factor (DF) for water. For this standard, thedesign factor is equal to 0.5.HDS 5 HDB 3 DF5 HDB 30.5 for this standard!3.3.2
33、 relation between dimensions, hydrostatic designstress, and pressure rating, nthe following expression, com-monly known as the ISO equation , is used in this specificationto relate dimensions, hydrostatic design stress, and pressurerating:2HDS/P 5 Do/t! 2 1 (1)or4Available from American National Sta
34、ndards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.5DLA Document Services Building 4/D 700 Robbins Avenue Philadelphia, PA19111-5094 http:/quicksearch.dla.mil/6Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825,Irving, TX 75062, http:/www
35、.plasticpipe.org.7Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.8Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.ch.F2769
36、1822HDS/P 5 R 2 1where:HDS = hydrostatic design stress, psi (or MPa),P = pressure rating, psig (or MPa),DO = average outside diameter, in. (or mm),t = minimum wall thickness, in. (or mm), andR = standard dimension ratio, SDR.3.3.3 standard thermoplastic material designated code,nthe pipe material de
37、signation code shall consist of theabbreviation for the type of plastic (PE) followed by Arabicnumerals which describe the short term properties in accor-dance with Specification D3350, the hydrostatic design stressfor water at 73 F (23 C) in units of 100 psi with any decimalfigures dropped. Where t
38、he hydrostatic design stress codecontains less than two figures, a zero is used before the number.3.3.3.1 DiscussionFurther information regarding testingand approval can be obtained from the National SanitationFoundation or other accredited laboratory.4. Classification4.1 TubingThis specification co
39、vers one PE-RT tubingmaterial in one standard dimension ratio, 9.0, and by amaximum continuous use temperature that shall be 180 F(82 C), and by nominal tubing sizes from18 through 6.4.2 FittingsThis specification classifies fittings, includingmanifolds, intended for use in systems with PE-RT tubing
40、, bya maximum continuous use temperature that shall be 180 F(82 C) and by nominal sizes from18 through 6 on the basis ofresistance to burst pressure, hydrostatic sustained pressure,excessive temperature and pressure, and thermocycling.5. Materials5.1 GeneralThe polyethylene used to make tubing shall
41、be virgin plastic or reworked plastic, or both, as specified in5.4, that meets the requirements of this standard and shall havea Plastic Pipe Institute (PPI) rating at 73 F (23 C) and 180 F(82 C). Fitting materials shall meet the applicable materialrequirements of a least one of the Specifications D
42、2683,D3261, F1055, F1807, F1960, F2080, F2159,orF2735.Polyethylene material used in fusion fittings shall meet therequirements of Table 1 and Table 2. Fittings shall be madefrom materials that are generally regarded as corrosion resis-tant.5.2 Basic Tubing MaterialsPE-RT tubing meeting therequiremen
43、ts of this specification are primarily defined by twocriteria namely, basic short-term properties, 5.2.1, and long-term hydrostatic properties, 5.2.2.5.2.1 Basic Short-Term PropertiesThis specification cov-ers tubing materials meeting the following requirements:5.2.1.1 ClassificationPolyethylene mat
44、erials suitable foruse in the manufacture of tubing under this specification shallbe classified in accordance with Specification D3350 as shownin Table 1.5.2.2 Long-Term Hydrostatic StrengthThis specificationcovers PE-RT tubing which is further defined on the basis oflong-term hydrostatic strength t
45、ests (Appendix X1). The ma-terial shall have a minimum pressure rating as per Table 2.5.3 Barrier LayersPE-RT tubing may incorporate an op-tional interior wall, mid wall or outer wall layer or a combi-nation of such layers of non-PE-RT material for the expresspurpose of providing gas barrier propert
46、ies to the pipe. Thetubing shall meet the minimum wall thickness requirements ofthis standard without using the barrier layer thickness in thedeterminations. PE-RT tubing with a barrier layer within thewall of the tubing (neither exterior layer nor interior layer)shall demonstrate a hydrostatic desi
47、gn stress (HDS) ratingequivalent to that of PE-RT tubing without a barrier layer. Thisdetermination shall be made in accordance with policies no lessrestrictive than those of the PPI TR-3 and meet the require-ments of this standard.5.4 Rework MaterialClean rework material of the samecommercial desig
48、nation, generated from the manufacturersown tubing production shall not be used unless the tubingproduced meet all the requirements of this specification. PE-RTtubing with a barrier layer shall not be used for reworkmaterial.5.5 Tubing Material DesignationThe tubing meeting therequirements of this s
49、pecification shall be designated PE-RT.5.6 CertificationTubing and fittings intended for use in thetransport of potable water shall be evaluated and certified assafe for this purpose by a testing agency acceptable to the localhealth authority. The evaluation shall be in accordance with therequirements for chemical extraction that are not less restric-tive than those included in NSF Standard 61. The seal or markof the laboratory making the evaluation shall be included onthe tubing.NOTE 2Further information regarding testing and approval
