1、Designation: F 2434 08An American National StandardStandard Specification forMetal Insert Fittings Utilizing a Copper Crimp Ring for SDR9Cross-linked Polyethylene (PEX) Tubing and SDR9 Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene(PEX-AL-PEX) Tubing1This standard is issued under the f
2、ixed designation F 2434; 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
3、 revision or reapproval.1. Scope*1.1 This specification covers metal insert fittings with o-ringseals and copper crimp rings for use with Cross-linked Poly-ethylene (PEX) and Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene (PEX-AL-PEX) tubing in12,34, 1,and 114 in. nominal diameters tha
4、t meet the requirements forSpecifications F 876 and F 2262. These fittings are intended foruse in 125 psi (861.9 kPa) (PEX-AL-PEX) and 100 psi (689.5kPa) (PEX) cold- and hot-water distribution systems operatingat temperatures up to and including 180F (82C). Included arethe requirements for materials
5、, workmanship, dimensions,performance, and markings to be used on the fittings and rings.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered stand
6、ard.1.3 Compliance with this specification requires that thesefittings be tested and certified to Specification F 877 andF 2262.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish
7、appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B 16/B 16M Specification for Free-Cutting Brass Rod, Barand Shapes for Use in Screw MachinesB62 Specification for Composition Bronze or Ounce Me
8、talCastingsB 140/B 140M Specification for Copper-Zinc-Lead (RedBrass or Hardware Bronze) Rod, Bar, and ShapesB 283 Specification for Copper and Copper-Alloy Die Forg-ings (Hot-Pressed)B 371/B 371M Specification for Copper-Zinc-Silicon AlloyRodB 584 Specification for Copper Alloy Sand Castings forGen
9、eral ApplicationsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsE18 Test Methods for Rockwell Hardness of MetallicMaterialsF 412 Terminology Relating to Plastic Piping SystemsF 876 Specification for Crossli
10、nked Polyethylene (PEX)TubingF 877 Specification for Crosslinked Polyethylene (PEX)Plastic Hot- and Cold-Water Distribution SystemsF 2262 Specification for Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Tubing OD Con-trolled SDR92.2 ASME Standards:B1.20.1 Pipe Threads General Purpose (In
11、ch)3B16.18 Cast Copper Alloy Solder Joint Pressure Fittings3B16.22 Wrought Copper and Copper Alloy Solder JointPressure Fittings32.3 Manufacturers Standardization Society Standard:SP-104 Wrought Copper Solder Joint Pressure Fittings42.4 NSF International Standards:NSF/ANSI 14 Plastic Piping Componen
12、ts and Related Ma-terials5NSF/ANSI 61 Drinking Water System Components-HealthEffects51This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved Nov. 1, 2008. Published Novem
13、ber 2008. Originallyapproved in 2004. Last previous edition approved in 2005 as F 2435 - 05.2For 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 S
14、ummary page onthe ASTM website.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE
15、, Vienna, VA 22180-4602, http:/www.mss-.5Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoh
16、ocken, PA 19428-2959, United States.3. Terminology3.1 Definitions are in accordance with Terminology F 412and abbreviations are in accordance with Terminology D 1600,unless otherwise indicated.4. Classification4.1 This specification covers one class of fittings and coppercrimp rings suitable for use
17、 with tubing that meets therequirements of Specifications F 876 and F 2262.5. Materials and Manufacture5.1 FittingsThe fittings shall be made from one of thefollowing metals:5.1.1 Cast Copper AlloysCast copper alloy fittings shallbe made from material meeting the requirements of Specifica-tion B 584
18、, copper alloy UNS Nos. C84400, C83800, C87850or C89844 or Specification B62 copper alloy UNS No.C83600.5.1.2 Machined BrassMachined brass fittings shall bemade from material meeting the requirements of SpecificationB 371/B 371M, copper alloy UNS No. C69300, SpecificationB 140/B 140M copper alloy UN
19、S No. C31400, SpecificationB 283 copper alloy UNS No. C37700, or Specification B 16/B 16M copper alloy UNS No. C36000.5.1.3 Forged BrassForged brass fittings shall be madefrom material meeting the requirements of Specification B 283copper alloy UNS Nos. C37700 or C69300.5.2 Crimp RingsCrimp rings sh
20、all be made from copperUNS Nos. C10200, or C12200, and shall be black in color. Thecrimp rings shall have a minimum allowable hardness of 35and a maximum allowable hardness of 45 on the Rockwell 15Tscale when measured according to Test Methods E18.5.3 O-ringsO-rings used on the copper alloy fittings
21、 tomake a static seal shall be manufactured from ethylenepropylene rubber (EPDM) or silicone rubber (Si), with a ShoreA durometer between 60 and 70 when tested in accordancewith Specification D 2240.6. General Requirements6.1 The following sections of Specifications F 877 andF 2262 constitute a part
22、 of this specification.6.1.1 Use with PEX Tubing (F 877):6.1.1.1 Requirements,6.1.1.2 Test Methods, and6.1.2 Use with PEX-AL-PEX Tubing (F 2262):6.1.2.1 Performance Requirements of Connectors exceptproduct marking section.6.1.3 Retest and Rejection.6.2 In addition, when a section with a title identi
23、cal to thatreferenced in 6.1, appears in this specification, it containsadditional requirements that supplement those appearing inSpecifications F 877 and F 2262.6.3 DimensionsAny randomly selected fitting or fittings,and crimp ring or crimp rings, shall be used to determinedimensions. Measurements
24、shall be made in accordance withTest Method D 2122, except determine diameters by makingmeasurements at four locations spaced approximately 45 apartaround the circumference. Inspection and gauging of solderjoint ends shall be in accordance with ASME B16.18, ASMEB16.22,orMSSSP-104.6.4 GeneralAll perf
25、ormance tests shall be performed onassemblies of fittings, crimp rings, PEX, and PEX-AL-PEXtubing. Fittings and crimp rings shall meet the material anddimensional requirements of this specification. PEX tubingshall meet the requirements of Specification F 876. PEX-AL-PEX tubing shall meet the requir
26、ements of SpecificationF 2262. Assembly of test specimens shall be in accordancewith 9.1.1. Use separate sets of assemblies for each perfor-mance test requirement. In addition, fittings shall be designedwith sufficient overall dimensions to allow proper use of crimptool without interference with pre
27、viously completed crimps onthe same fitting.7. Dimensions7.1 Dimensions and TolerancesThe dimensions and tol-erances of fittings and crimp rings shall be as shown in Fig. 1,Fig. 3, Fig. 4, and Table 1, when measured in accordance with6.3.7.1.1 AlignmentThe maximum angular variation of anyopening sha
28、ll not exceed 1 off the true centerline axis.7.1.2 Fittings with Solder Joint EndsSolder joint endsshall be in accordance with ASME B16.22, ASME B16.18,orMSS SP-104.7.1.3 Tapered Threaded EndsFitting threads shall beright-hand conforming to ASME B1.20.1. They shall be taperthreads (NPT).8. Workmansh
29、ip, Finish and Appearance8.1 The sealing surfaces of the insert shall be smooth andfree of foreign material. Fitting walls shall be free of cracks,holes, blisters, voids, foreign inclusions, or other defects thatare visible to the unaided eye, that affect the wall integrity.9. Assembly9.1 Crimp Join
30、tsInsert fittings shall be joined to PEX, orPEX-AL-PEX, tubing by the compression of a copper crimpring around the outer circumference of the tubing, forcing thetubing material into annular spaces formed by ribs on thefitting. Insert fittings and crimp rings shall meet the dimen-sional and material
31、requirements of this standard. The dimen-sions and out-of-roundness of the crimp ring, after it has beencrimped, shall be in accordance with Table 1.9.1.1 Crimping ProcedureThe crimping procedure shallbe as follows: slide the crimp ring onto the tubing, insert theribbed end of the fitting into the e
32、nd of the tubing until thetubing contacts the shoulder of the fitting or tube stop. Thecrimp ring shall then be positioned on the tubing so the edge ofthe crimp ring is18 to14 in. (3.2 to 6.4 mm) from the end ofthe tube. The jaws of the crimping tool shall be centered overthe crimp ring and the tool
33、 shall be held so that the crimpingjaws are approximately perpendicular to the axis of the barb.The jaws of the crimping tool shall be closed around the crimpring, compressing the crimp ring onto the tubing. The crimpring shall not be crimped more than once. Each crimp shall bechecked to determine c
34、onformance to the after-crimped dimen-sional requirements of Table 1.F243408210. Product Marking10.1 Quality of MarkingThe marking shall be applied tothe fittings in such a manner that it remains legible afterinstallation and inspection.10.2 Content of Marking:10.2.1 Marking on fittings shall includ
35、e manufacturersname or trademark, or some other identifying mark, and theASTM standard number.SizeAOutsideDiameterof RibBMinimumIDL1Distanceto FirstRibL2MinInsertLengthAHMinRibHeightNumberofRibsBWRibCWidthGRibSpacingTypicalTMinimumWallDR1MinimumRibRadiusR2MinimumRadiusSIsolatorDiameterEEGrooveDepth1
36、2 in. 0.471 6 0.004 0.310 0.214-0.224 0.625 0.013 3 0.030.04 0.0580.066 0.028 0.006 0.015 0.518 6 0.002 0.0406 0.00134 in. 0.667 6 0.004 0.500 0.214-0.224 0.625 0.013 3 0.030.04 0.0580.066 0.037 0.006 0.015 0.738 6 0.005 0.0406 0.0011 in. 0.856 6 0.004 0.667 0.214-0.224 0.795 0.013 4 0.030.04 0.0580
37、.066 0.041 0.006 0.015 0.963 6 0.005 0.0406 0.001114 in. 1.045 6 0.004 0.860 0.214-0.224 0.795 0.013 4 0.030.04 0.0580.066 0.045 0.006 0.015 1.150 6 0.005 0.0406 0.001AMeasured from shoulder of rib to end of fitting.BLead chamfer area is not considered a rib.CRib sides may be angled.DApplies to enti
38、re fitting, not just insert area.EThis diameter serves as a tube stop to isolate Aluminum layer, in PEX-AL-PEX tubing, preventing contact with the brass.FIG. 1 Fitting Insert Dimensions and TolerancesNOTEThe Barb/O-ring design is covered by a patent. Interested parties are invited to submit informat
39、ion regarding the identification of analternative(s) to this patent item to theASTM International Headquarters.Your comments will receive careful consideration at a meeting of the responsibletechnical committee, which you may attend.FIG. 2 Sealing O-ring PlacementF243408310.2.1.1 Where recessed mark
40、ing is used on fittings, careshall be taken to see that the marking shall not cause cracks orreduce the wall thickness below the minimum specified.10.2.2 Marking on packaging shall include manufacturersname, fitting size, and ASTM F 2434.10.2.3 Marking on crimp rings shall include manufacturerstrade
41、mark or some other identifying mark and ASTM F 2434.11. Quality Assurance11.1 When the product or product packing is marked withthe ASTM designation F 2434, the manufacturer affirms thatthe product was manufactured, inspected, sampled, and testedin accordance with this specification and has been fou
42、nd tomeet the requirements of this specification.SizeIDInsideDiameterWO-ringCross Section12 in. 0.394 6 0.005 0.039 6 0.00334 in. 0.591 6 0.005 0.039 6 0.0031 in. 0.768 6 0.009 0.039 6 0.003114 in. 0.945 6 0.009 0.039 6 0.003FIG. 3 Fitting O-ring Dimensions and TolerancesSizeAAvg OutsideDiameterA,BB
43、CWidthWall ThicknessBAverage WallC,D12 in. 0.750 6 0.003 0.056 6 0.0035 6 0.002 0.325 6 0.02034 in. 1.000 6 0.003 0.056 6 0.0035 6 0.002 0.325 6 0.0201 in. 1.250 6 0.003 0.049 6 0.0035 6 0.002 0.450 6 0.020114 in. 1.500 6 0.003 0.055 6 0.0035 6 0.002 0.550 6 0.020AAll dimensions shall be measured wi
44、th appropriate micrometers, such as pin or ball micrometers for wall and outside diameter micrometers with flat anvils or verniercalipers shall be used to measure outside diameters and width of rings.BThe average measurement is obtained from measurements taken in at least two different circumferenti
45、al positions which are equally spaced around the circumference.CThe average wall measurement is obtained from measurements taken in eight different positions which are equally spaced around the circumference.DThe maximum out-of-roundness of the crimp ring shall not inhibit assembly with the fitting
46、and tubing. The crimp ring dimensions after crimping shall comply withTable 1.FIG. 4 Copper Crimp Ring Dimensions Before CrimpingTABLE 1 Crimp Ring Dimensions After Crimping onTube/Fitting AssemblyNominal Tube SizeInsert EndFinal Crimped Outside DiameterA,BMinimum,in. (mm)Maximum,in. (mm)12 0.700 (1
47、7.8) 0.715 (18.2)34 0.945 (24.0) 0.960 (24.4)1 1.175 (29.8) 1.190 (30.2)114 1.431 (36.3) 1.445 (36.7)AFor all diameters except for the area of scoring caused by the crimping tool.BThe maximum out-of-roundness as measured by the difference between theminimum crimped outside diameter and the maximum c
48、rimped outside diametershall not exceed 0.006 in. (0.150 mm).F243408412. Keywords12.1 cold and hot water distribution; copper crimp rings;cross-linked polyethylene; metal insert fittings; PEX;PEX-AL-PEXSUPPLEMENTARY REQUIREMENTSThis requirement applies whenever a regulatory authority or user calls f
49、or product to be used toconvey or be in contact with potable water.S1. Potable Water RequirementsS1.1 Products intended for the transport of potable watershall be evaluated, tested, and certified for conformance withANSI/NSF Standard No. 61, or the health effects portion ofNSF Standard No. 14, by an acceptable certifying organization,when required by the regulatory authority having jurisdiction.APPENDIX(Nonmandatory Information)X1. GO/NO-GO CRIMP GAGEX1.1 This appendix provides dimensions for gages to checkthe after-crimped di
