1、Designation: F1960 111An American National StandardStandard Specification forCold Expansion Fittings with PEX Reinforcing Rings for Usewith Cross-linked Polyethylene (PEX) Tubing1This standard is issued under the fixed designation F1960; 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.1NOTEFigures 1 and 2 and footnote 1 were editorially updated in
3、 July 2011.1. Scope*1.1 This specification covers cold expansion fittings andcross-linked (PEX) reinforcing rings for use with cross-linkedpolyethylene (PEX) plastic tubing in38,12,58,34, 1, 1-14 ,112in. and 2 in. nominal diameters that meet the requirements ofSpecifications F876 and F877. These fit
4、tings are intended foruse in 100 psi (690 kPa) cold- and hot-water distributionsystems operating at temperatures up to and including 180F(82C). The system is comprised of a PEX reinforcing ring anda cold expansion fitting. Included are the requirements formaterials, workmanship, dimensions, and mark
5、ings to be usedon the fitting components. The components covered by thisspecification are intended for use in residential and commer-cial, hot and cold, potable water distribution systems as well assealed central heating, including under-floor-heating systems.1.2 The values stated in inch-pound unit
6、s are to be regardedas the standard. The values given in parentheses are mathemati-cal conversions to SI units which are provided for informationonly and are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theres
7、ponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A351/A351M Specification for Castings, Austenitic, forPressure-Containing PartsB16/B16M Sp
8、ecification for Free-Cutting Brass Rod, Barand Shapes for Use in Screw MachinesB140/B140M Specification for Copper-Zinc-Lead (RedBrass or Hardware Bronze) Rod, Bar, and ShapesB62 Specification for Composition Bronze or Ounce MetalCastingsB75 Specification for Seamless Copper TubeB283 Specification f
9、or Copper and Copper-Alloy Die Forg-ings (Hot-Pressed)B371/B371M Specification for Copper-Zinc-Silicon AlloyRodB584 Specification for Copper Alloy Sand Castings forGeneral ApplicationsB967/B967M Specification for Copper-Zinc-Tin-BismuthAlloy Rod, Bar and WireD792 Test Methods for Density and Specifi
10、c Gravity (Rela-tive Density) of Plastics by DisplacementD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1600 Terminology for Abbreviated Terms Relating toPlasticsD2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD2765 Test Methods for Determ
11、ination of Gel Content andSwell Ratio of Crosslinked Ethylene PlasticsD3035 Specification for Polyethylene (PE) Plastic Pipe(DR-PR) Based on Controlled Outside DiameterD6394 Specification for Sulfone Plastics (SP)F412 Terminology Relating to Plastic Piping SystemsF876 Specification for Crosslinked P
12、olyethylene (PEX)TubingF877 Specification for Crosslinked Polyethylene (PEX)Plastic Hot- and Cold-Water Distribution Systems2.2 ANSI Standard:B1.20 Pipe Threads General Purpose3B16.18 Cast Copper Alloy Solder Joint Pressure FittingsB16.22 Wrought Copper and Copper Alloy Solder JointPressure Fittings
13、2.3 NSF Standards:1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.10 on FittingsCurrent edition approved June 1, 2011. Published June 2011. Originallyapproved in 1999. Last previous edition approved in
14、2010 as F1960 10. DOI:10.1520/F1960-11.2For 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.3Available from Americ
15、an National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NSF 14 for Plas
16、tic Piping Components and Related Mate-rials4NSF 61 for Drinking Water System Components-HealthEffects42.4 Manufacturers Standardization Society Standards:SP-104 Wrought Copper Solder Joint Pressure Fittings53. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412 and abbrev
17、iations are in accordance with Termi-nology D1600, unless otherwise indicated.3.1.1 PEX reinforcing ringscross-linked polyethylenerings used to add contraction force around the cold expansionfittings.4. Classification4.1 This specification covers one class of cold expansionfittings with PEX reinforc
18、ing rings suitable for use with PEXtubing that meets the requirements of Specifications F876 andF877.5. Materials and Manufacture5.1 Cold expansion fittings shall be made from one of thefollowing materials:5.1.1 Brass:5.1.1.1 Machined BrassMachined brass fittings shall bemade from material meeting t
19、he requirements of SpecificationB140/B140M CopperAlloy UNS No. C31400, or SpecificationB16/B16M copper alloy UNS No. C36000, or SpecificationB371/B371M CopperAlloy UNS No. C69300, or Standard EN12164, copper alloy CW614N, or Copper Alloy UNS No.C35330, Copper Alloy UNS No. C27450 or SpecificationB96
20、7/B967M copper alloy UNS No. C49260 or C49340.5.1.1.2 Forged BrassForged brass fittings shall be madefrom material meeting the requirements of Specification B283,Copper Alloy UNS Nos. C27450, C35330, C36500, C37700,C46400, C48600, C49260, C49340, or C69300.5.1.1.3 Cast Copper AlloysCast copper alloy
21、 fittings shallbe made from material meeting the requirements of Specifica-tion B584, Copper Alloy UNS Nos. C84400, C83800, C87850or C89844 or C89836 or Specification B62, CopperAlloy UNSNo. C83600, or Standard EN 1982, copper alloy EN SymbolCuSn4Zn6Pb3C.5.1.2 Sulfone:5.1.2.1 20 % Glass-Filled Polys
22、ulfonePolysulfone fit-tings produced using glass reinforcement shall be molded frompolysulfone materials as specified in Specification D6394. Thepolymers shall consist of polysulfone and glass fiber and meetthe following line call out for additional properties(SP0113G20A30430).5.1.2.2 Unreinforced S
23、ulfone Plastic (SP)Fittings shall bemolded from sulfone plastic (SP) as specified in SpecificationD6394. The material shall be unreinforced polysulfone (group01, class 1, grade 2), or polyphenylsulfone (group 3, class 1,grade 2.) Material may also be an unreinforced blend of thesetwo materials with
24、the polyphenylsulfone continuous phasecomprising 55 to 80% of the blend.5.1.2.3 Clean rework material of the same commercialdesignation, generated for the manufacturers own productionmay be used by the same manufacturer, provided the fittingsmeet all of the requirements of this specification. Rework
25、material shall not be introduced at a ratio exceeding 25%.5.2 Reinforcing rings shall be made from PEX materialmeeting the performance requirements of 6.1.5.3 Stainless Steelfittings shall be made from materialmeeting the requirements of SpecificationA351/A351M, stain-less steel UNS No. J92800.5.4 W
26、rought CopperWrought copper fittings shall bemade from material meeting the requirements of SpecificationB75 for one of the following coppers: copper UNS C10200,C10300, C10800, or C12200.6. General Requirements6.1 The following sections of Specification F877 constitutea part of this specification.6.
27、1.1 Requirements,6.1.2 Test Methods, and6.1.3 Retest and Rejection.6.2 In addition, when a section with a title identical to thatreferenced in 6.1, above, appears in this specification, itcontains additional requirements that supplement those appear-ing in F877.6.3 System Performance Requirements:6.
28、3.1 GeneralAll performance tests shall be performed onassemblies of fittings, PEX reinforcing rings and PEX tubing.Fittings and reinforcing rings shall meet the material anddimensional requirements of this specification. PEX tubingshall meet the requirements of Specifications F876 and F877.Assembly
29、of test specimens shall be in accordance with 10.1.Each assembly shall contain at least two joints. Use separatesets of assemblies for each performance test requirement.6.3.2 DimensionsAny randomly selected fitting or fittingsand PEX reinforcing rings shall be used to determine dimen-sions. Measurem
30、ents shall be made in accordance with TestMethod D2122, except determine diameter by making mea-surements at four locations spaced at approximately 45 apartaround the circumference. Inspection and gauging of solderjoint ends shall be accordance with ANSI B16.18, ANSIB16.22, or Manufacturers Standard
31、ization Society SP-104.7. Performance Requirements7.1 PEX Reinforcing Rings:7.1.1 DensityWhen determined in accordance with 11.1,the PEX reinforcing rings shall have a density in the rangefrom 926 to 940 kg/m3.7.1.2 Degree of Cross-linkingWhen tested in accordancewith 11.2, the degree of cross-linki
32、ng for PEX reinforcing ringsshall be within the range from 70 to 89% inclusive.7.1.3 Stabilizer Migration ResistanceWhen tested in ac-cordance with 11.3, the time t2, shall be at least 50% of thetime, t1.4Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140,
33、 http:/www.nsf.org.5Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.F1960 11128. Dimensions8.1 Dimensions and TolerancesThe dimensions and tol-erances of fittings and PEX reinforcing rings shall be
34、as shownin Figs. 1 and 2 and Fig. 4 when measured in accordance with6.3.2.8.1.1 AlignmentThe maximum angular variation of anyopening shall not exceed 1 off the true centerline axis.8.1.2 Fittings with Solder Joint EndsSolder joint endsshall be in accordance with ANSI B16.22, ANSI B16.18 orMSS SP-104
35、.8.1.3 Tapered Threaded EndsFitting threads shall beright-hand conforming to ANSI B1.20.1. They shall be taperthreads (NPT).9. Workmanship, Finish and Appearance9.1 The fittings shall be made from compounds that arehomogeneous throughout. The sealing surfaces of the insertshall be smooth and free of
36、 foreign material. The fitting wallsshall be free of cracks, holes, blisters, voids, foreign inclusions,or other defects that are visible to the naked eye and that affectwall integrity.10. Assembly10.1 Cold Expansion JointsFittings shall be joined toPEX tubing by the contraction of the tubing and re
37、inforcingring over the insert of the cold expansion fitting. Fittings andPEX reinforcing rings shall meet the dimensional and materialrequirements of this standard. PEX tubing shall meet therequirements of Specification F876 or F877.10.2 Expansion ToolThe expansion tool shall expand thePEX tubing an
38、d reinforcing ring to a maximum inside diameteras listed in Table 1. The expanded tubing shall be round toensure uniform contraction of the tubing around the coldexpansion fitting. The expansion tool shall be inspected forwear according to the manufacturers instructions.10.3 Procedure:10.3.1 Assembl
39、y of ConnectionsAffix the cold expansionfitting to the PEX tubing by sliding the PEX reinforcing ringonto the tubing and positioning the ring so that the end of thering overhangs the end of the tubing a maximum of116 in. (1.6mm). Insert the expansion head into the tubing as far as it willgo. Holding
40、 the tool so that the centerline of the expansionhead is approximately in line with the centerline of the tubing,operate the tool until the tubing and reinforcing ring are fullyexpanded. After completing the expansion process, remove theexpansion tool and insert the cold expansion fitting until thet
41、ubing hits the shoulder of the fitting or the tube stop. Hold thefitting in place until the tubing contracts sufficiently to hold thefitting in place.NOTE-BREAK ALL INTERNAL CORNERS .003.015ALL DIAMETER CONCENTRICITY .005 TIRBrass, Stainless Steel and Wrought Copper DimensionsSizeMin.WallMin.IDABCDE
42、FGH I J38 in. 0.047 0.260 0.375 0.433 0.472 0.407 0.051 0.108 0.051 0.305 0.107 0.2660.395 0.441 0.480 0.427 0.067 0.128 0.067 0.325 0.127 0.28612 in. 0.057 0.378 0.513 0.571 0.610 0.545 0.051 0.108 0.051 0.384 0.147 0.3050.533 0.579 0.618 0.565 0.067 0.128 0.067 0.404 0.167 0.32558 in. 0.057 0.500
43、0.635 0.689 0.740 0.663 0.051 0.147 0.051 0.462 0.187 0.3840.655 0.697 0.748 0.683 0.067 0.167 0.067 0.482 0.207 0.40434 in. 0.057 0.595 0.728 0.787 0.866 0.762 0.051 0.187 0.051 0.502 0.226 0.4230.748 0.795 0.874 0.782 0.067 0.207 0.067 0.522 0.246 0.4431 in. 0.072 0.795 0.965 1.024 1.102 0.978 0.0
44、51 0.226 0.051 0.620 0.265 0.5410.985 1.032 1.110 0.998 0.067 0.246 0.067 0.640 0.285 0.5611-14 in. 0.075 0.960 1.139 1.266 1.352 1.217 0.064 0.279 0.064 0.761 0.328 0.6641.159 1.276 1.362 1.237 0.080 0.299 0.080 0.781 0.348 0.6841-12 in. 0.095 1.084 1.304 1.374 1.486 1.329 0.077 0.331 0.077 0.899 0
45、.388 0.7851.324 1.382 1.494 1.349 0.093 0.351 0.093 0.919 0.408 0.8052 in. 0.095 1.550 1.800 1.958 2.079 1.891 0.093 0.467 0.093 1.137 0.521 1.0301.780 1.950 2.071 1.871 0.077 0.447 0.077 1.117 0.501 1.010FIG. 1 Brass and Stainless Steel and Wrought Copper Insert Dimensions and TolerancesF1960 11131
46、0.3.2 Improper ConnectionsIf the insert fitting was notfully inserted to its shoulder or tube stop or the reinforcing ringwas not placed in accordance with 10.3.1, remove the tubingand ring from the fitting and trim 2 in. from the tubing. Usinga new reinforcing ring, repeat the procedure in 10.3.1.1
47、1. Reinforcing Ring Testing Methods11.1 DensityDetermine the density of the reinforcing ringmaterial in accordance with Test Method D1505, or TestMethod D792, using three specimens.11.2 Degree of Cross-LinkingDetermine the degree ofcross-linking in accordance with Test Method D2765, MethodB except f
48、or the following: during sample preparation, place areinforcing ring in a lathe with automatic feeding. Shave a stripapproximately 0.004 in.-thick that consists of the full thicknessof the ring. For the purpose of this specification, the degree ofcross-linking (V) is defined as 100 % minus the extra
49、ct percent= V.NOTE-BREAK ALL INTERNAL CORNERS .003.015ALL DIAMETER CONCENTRICITY .005 TIRSulfone DimensionsSizeMin.WallMin.IDABCDEFGH I JMax Flashand Mismatch38 in. 0.047 0.268 0.382 0.433 0.472 0.407 0.051 0.108 0.051 0.305 0.108 0.266 0.0050.402 0.441 0.480 0.427 0.067 0.128 0.067 0.325 0.128 0.30612 in. 0.057 0.385 0.520 0.571 0.610 0.545 0.051 0.108 0.051 0.384 0.147 0.305 0.0050.540 0.579 0.618 0.565 0.067 0.128 0.067 0.404 0.167 0.34558 in. 0.057 0.494 0.628 0.689 0.740 0.663 0.051 0.147 0.051 0.462 0.187 0.384
