1、Designation: F877 18F877 18a An American National StandardStandard Specification forCrosslinked Polyethylene (PEX) Hot- and Cold-WaterDistribution Systems1This standard is issued under the fixed designation F877; the number immediately following the designation indicates the year of originaladoption
2、 or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers requirements, test methods, and marking requirements
3、for system components when tested withnominal SDR9 crosslinked polyethylene (PEX) tubing as a system. Systems are intended for 100 psi (0.69 MPa) water service upto and including a maximum working temperature of 180 F (82 C). Requirements and test methods are included for materials,workmanship, dime
4、nsions and tolerances, burst pressure, hydrostatic sustained pressure, excessive temperature and pressure,corrosion resistance, and thermo-cyclingthermocycling tests. The components covered by this specification are intended for use inin, but not limited to, residential and commercial,commercial hot
5、 and cold,cold potable water distribution systems or otherapplications such as reclaimed water, fire protection, municipal water service lines, radiant panel heating and cooling systems,hydronic baseboard heating distribution systems, snow and ice melting systems, geothermal ground loops, district h
6、eating, turfconditioning, compressed air distribution, and building services pipe.1.2 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notesand footnotes (excluding those in tables and figures) shall not be considered as requirement
7、s of the specification.1.3 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are provided forinformation only.NOTE 1Suggested hydrostatic design stresses and hydrostatic pressure ratings for tubing and fittings are listed in Appendix X1. Desig
8、n, assembly,and installation considerations are discussed in Appendix X2. An optional performance qualification and an in-plant quality control program arerecommended in Appendix X3.1.4 The following safety hazards caveat pertains only to the test method portion, Section 7, of this specification: Th
9、is standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatorylimitations prior to use.1.5 This
10、 international standard was developed in 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
11、) Committee.2. Referenced Documents2.1 ASTM 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
12、 Terminology for Abbreviated Terms Relating to PlasticsD1898 Practice for Sampling of Plastics (Withdrawn 1998)3D2749 Symbols for Dimensions of Plastic Pipe FittingsD2837 Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis forThermoplastic Pip
13、e ProductsD3140 Practice for Flaring Polyolefin Pipe and Tubing (Withdrawn 1999)3F412 Terminology Relating to Plastic Piping Systems1 This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.61 on Water.Current
14、edition approved April 1, 2018Aug. 1, 2018. Published April 2018August 2018. Originally approved in 1984. Last previous approved 20112018 asF877 11a.F877 18. DOI: 10.1520/F0877-18.10.1520/F0877-18A.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service a
15、t serviceastm.org. For Annual 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 ver
16、sion. Becauseit may not be 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 sec
17、tion appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1F876 Specification for Crosslinked Polyethylene (PEX) TubingF1960 Specification for Cold Expansion Fittings with PEX Reinforcing Rings for Use wit
18、h Cross-linked Polyethylene (PEX)TubingF1961 Specification for Metal Mechanical Cold Flare Compression Fittings with Disc Spring for Crosslinked Polyethylene(PEX) Tubing (Withdrawn 2018)3F1807 Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (P
19、EX) Tubingand SDR9 Polyethylene of Raised Temperature (PE-RT) TubingF1865F1960 Specification for Mechanical Cold Expansion Insert Fitting With Compression Sleeve for Fittings with PEXReinforcing Rings for Use with Cross-linked Polyethylene (PEX) Tubing (Withdrawn 2018)F2080 Specification for Cold-Ex
20、pansion Fittings with Metal Compression-Sleeves for Crosslinked Polyethylene (PEX) Pipe andSDR9 Polyethylene of Raised Temperature (PE-RT) PipeF2098 Specification for Stainless Steel Clamps for Securing SDR9 Cross-linked Polyethylene (PEX) Tubing to Metal Insert andPlastic Insert FittingsF2159 Speci
21、fication for Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX)Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) TubingF2434 Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubingand S
22、DR9 Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene (PEX-AL-PEX) TubingF2735 Specification for Plastic Insert Fittings For SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of RaisedTemperature (PE-RT) TubingF2854 Specification for Push-Fit Crosslinked Polyethylene (PEX) Mechanical
23、Fittings for Crosslinked Polyethylene (PEX)Tubing2.2 ANSI Standards:B 36.10 Welded and Seamless Wrought Steel Pipe3Z 17.1 Preferred Numbers42.3 AWWA Standard:Manual M-11, Steel Pipe Design and Installation42.4 Federal Standard:Fed Std. No. 123 Marking for Shipment (Civil Agencies)52.5 Military Stand
24、ard:MIL-STD-129 Marking for Shipment and Storage52.6 NSF Standard:NSF/ANSI Standard No. 14 for Plastic Piping Components and Related Materials6NSF/ANSI Standard No. 61 for Drinking Water System Components-Health Effects63. Terminology3.1 The terminology used in this specification is in accordance wi
25、th Terminology F412, Terminology D1600, and SymbolsD2749, unless otherwise specified. The abbreviation for crosslinked polyethylene is PEX. Plastic tubing denotes a particulardiameter schedule of plastic pipe in which outside diameter of the tubing is equal to the nominal size plus 18 in. Plastic pi
26、pe outsidediameter schedule conforms to ANSI B 36.10.3.2 Definitions of Terms Specific to This Standard:3.2.1 crosslinked polyethylene plasticsplastics prepared by crosslinking (curing) polyethylene compounds. a polyethylenematerial that has undergone a change in molecular structure through processi
27、ng whereby a majority of the polymer chains arechemically linked.3.2.2 fittingan appurtenance such as coupling, elbow or teea piping component used to join or terminate sections of PEXtubing or to provide changes of direction or branching in a piping system. This includes appurtenances such as coupl
28、ings, elbows,tees, or plugs used to connect tubing or as an accessory to tubing.3.2.3 standard dimension ratio (SDR)a selected series of numbers in which the ratio of outside diameter to wall thickness.For PEX tubing, it is calculated by dividing the average outside diameter to of the tubing in inch
29、es or in millimeters by theminimum wall thickness dimension ratios are constant for all sizes ofin inches or millimeters. If the wall thickness calculated bythis formula is less than 0.070 in. (1.78 mm) it shall be arbitrarily increased to 0.070 in. except for nominal tubing sizes 516 tubingin each
30、standard dimension ratio, and which are the ANSI Z 17.1 Preferred Number Series R 10 modified by +1. and smaller, asspecified in Table 3. The SDR values shall be rounded to the nearest 0.5.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, h
31、ttp:/www.ansi.org.4 Available from American Water Works Association (AWWA), 6666 W. Quincy Ave., Denver, CO 80235, http:/www.awwa.org.5 Available from DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA 19111-5094, http:/quicksearch.dla.mil.6 Available from NSF International, P.O
32、. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http:/www.nsf.org.F877 18a23.2.4 manifoldan appurtenance that has at least one inlet and multiple outlets.outlets with integral fittings, valves, or both.3.2.5 system componentsfittings and manifolds.fittings, valves with integral fittings,
33、 and manifolds which connect directly toPEX tubing made in accordance with Specification F876.3.2.6 system component assemblysystem component connected directly to PEX tubing made in accordance with SpecificationF876.4. Materials4.1 GeneralPEX systems shall use crosslinked polyethylene tubing as des
34、cribed in Specification F876.4.2 Fitting and manifold materials shall meet the applicable requirements as described in Specifications F1807, F1865, F1960,F1961F2080, F2080F2098, F2159, F2434, F2735, or F2854.4.3 CertificationPEX tubing and system components, used for the distribution of potable wate
35、r, shall be products approvedfor that service by the regulatory bodies having such jurisdiction. These products shall be tested for that service by a nationallyrecognized and accredited testing laboratory testing laboratory that is accredited for this specification and shall bear thecertification ma
36、rk of the testing agency.5. Classification5.1 FittingsThis specification classifies fittings, including manifolds, system components, intended for use in systems withPEX tubing, by a maximum continuous use temperature that shall be 180 F (82 C) and by nominal tubing sizes (NTS) from 18in. through 6
37、in. on the basis of resistance to burst pressure, hydrostatic sustained pressure, excessive temperature pressurecapability, and by thermocycling. Fittings shall be compatible with tubing made to the requirements of Specification F876.6. Requirements6.1 GeneralCompliance with this specification requi
38、res that fittings contained in Specifications F1807, F1960, F2080, F2098,F2159, F2434, F2735, and F2854 and system components must meet all requirements of this section.6.2 WorkmanshipFittings shall be made from materials that are homogeneous throughout homogeneous throughout, uniformin appearance a
39、nd free of visible cracks, holes, foreign inclusions, or other defects. All sealing surfaces shall be smooth and freeof foreign material. The walls of fittings and manifolds shall be free of cracks, holes, cracks, holes, blisters, voids, foreigninclusions, or other defects that are visible to the na
40、ked eye and may affect fitting integrity. All sealing surfaces shall be smoothand free of foreign material.6.2 Dimensions and Tolerances:6.2.1 The dimensions and tolerances of fittings shall meet the specific requirements contained in Specifications F1807, F1865,F1960, F1961, F2080, F2159, F2434, an
41、d F2735 or other recognized specification.6.2.2 Fittings shall be compatible with tubing made to the requirements of Specification F876.6.3 Corrosion ResistanceDimensions and Tolerances: Fittings shall be made from materials that are generally regarded ascorrosion resistant.6.3.1 Compliance with thi
42、s specification requires that fittings The dimensions and tolerances of fittings shall meet the specificrequirements contained in Specifications F1807, F1865, F1960, F1961F2080, F2080F2098, F2159, F2434, and F2735, and orF2854 must meet the Performance and Test Method requirements of other recognize
43、d specification. F877.6.4 Corrosion ResistanceFittings intended for potable water applications shall comply with dezincification resistance andstress corrosion cracking resistance requirements of NSF/ANSI Standard 14.6.5 Hydrostatic Burst:6.5.1 Tubing and fittings (tested as assemblies) System compo
44、nent assemblies assembled using the manufacturers instructionsshall meet the minimum hydrostatic burst requirements shown in Table 1 when tested in accordance with 7.67.7.6.5.2 Manifolds System components with integral shut-offs (valves) shall be tested with all ports in the full-open or unrestricte
45、dposition.6.5.2.1 If the manifold system component assembly has more than one connection size, the test pressure selected from Table1 shall be based upon the largest nominal PEX connection.6.6 Hydrostatic Sustained Pressure Strength6.6.1 Tubing and fittings (tested as assemblies) System component as
46、semblies shall meet the minimum hydrostatic sustainedpressure strength requirements shown in Table 2 when tested in accordance with 7.47.5. Test duration shall be 1000 h.6.6.1.1 Manifolds System components with integral shut-off (valves) shall be tested with all ports in the full-open or unrestricte
47、dposition.6.7 Thermocycling:6.7.1 Fittings, System components, assembled using the manufacturers instructions, shall not leak after completion of 1000cycles between the temperatures of 60 F (16 C) and 180 F (82 C) when tested in accordance with 7.57.6.F877 18a36.7.1.1 Manifolds System components wit
48、h integral shut-offs (valves) shall be tested with all ports in the full open orunrestricted position.6.8 Excessive TemperaturePressure Capability: Temperature/Pressure CapabilityTABLE 1 Burst Pressure Requirements forSDR9 PEX Tubing and System Component AssembliesNominalTubingSizeMinimum Burst Pres
49、sures atDifferent Temperaturesin. mm psiA at73.4 F(MPa) at(23 C)psiA at180 F(MPa) at(82.2 C)18 3870(6.00) 390 (2.69)14 7752(5.19) 336 (2.32)38 10 620 (4.27) 275 (1.90)12 13 480 (3.31) 215 (1.48)58 andlarger16 andlarger475 (3.27) 210 (1.45)TABLE 1 Burst Pressure Requirements forSDR9 PEX System Component AssembliesNominalTubingSizeMinimum Burst Pressures atDifferent TemperaturespsiA at73 F(MPa) at(23 C)psiA at180 F(MPa) at(82 C)18 870 (6.00) 390 (2.69)14 752 (5.19) 336 (2.32)38 620 (4.27) 275 (1.90)12 480 (3.31) 215 (1.48)58 and
