1、Designation: F 2434 05An 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 (e) indicates an editorial change since the las
3、t revision or reapproval.1. Scope1.1 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, 1and 114 in. nominal diameters that
4、 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 the standard. The values given in parentheses are mathemati-cal conversions to SI units which are provided for informationonly and are not considered
6、 the standard.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
7、establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B16 Specification for Free-Cutting Brass Rod, Bar, andShapes for Use in Screw MachinesB62 Specification for Composition Bronze or Ounc
8、e MetalCastingsB 140/B 140M Specification for Copper-Zinc-Lead(Leaded Red Brass or Hardware Bronze) Rod, Bar, andShapesB 283 Specification for Copper and Copper-Alloy Die Forg-ings (Hot-Pressed)B 584 Specification for Copper Alloy Sand Castings forGeneral ApplicationsD 1600 Terminology for Abbreviat
9、ed Terms Relating toPlasticsD 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsE18 Test Methods for Rockwell Hardness and SuperficialHardness of Metallic MaterialsF 412 Terminology Relating to Plastic Piping SystemsF 876 Specification for Cross-linked Polyethylene (PEX)
10、TubingF 877 Specification for Cross-linked Polyethylene (PEX)Plastic Hot- and Cold-Water Distribution SystemsF 2262 Specification for Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene Tubing OD Con-trolled SDR92.2 ASME Standards:B1.20.1 Pipe Threads General Purpose (Inch)3B16.18 Cast Copp
11、er 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 Components and Related Ma-te
12、rials5NSF/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, 2005. Published November 2005. Originally
13、approved in 2004. Last previous edition approved in 2004 as F2435 - 04.2For 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 AST
14、M website.3Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990.4Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.5Available from N
15、SF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 Definitions are in accordance with Terminology F 412and abbreviations are in accordance
16、with Terminology D 1600,unless otherwise indicated.4. Classification4.1 This specification covers one class of fittings and coppercrimp rings suitable for use with tubing that meets therequirements of Specifications F 876 and F 2262.5. Materials and Manufacture5.1 FittingsThe fittings shall be made
17、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, copper alloy UNS C84400, C83800 or C89844 orSpecification B62copper alloy UNS C83600.5.1.2 Machined BrassMachined brass fittings shall bemad
18、e from material meeting the requirements of SpecificationB 140/B 140M copper alloy UNS C31400, Specification B 283copper alloy UNS C37700 or Specification B16copper alloyUNS C36000.5.1.3 Forged BrassForged brass fittings shall be madefrom material meeting the requirements of Specification B 283coppe
19、r alloy UNS C37700.5.2 Crimp RingsCrimp rings shall be made from copperUNS 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-rin
20、gsO-rings used on the copper alloy fittings 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 Speci
21、fications F 877 andF 2262 constitute a part 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 a
22、ddition, when a section with a title identical 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
23、 used to determinedimensions. Measurements 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,
24、 ASMEB16.22,orMSSSP-104.6.4 GeneralAll performance 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 8
25、76. PEX-AL-PEX tubing shall meet the requirements 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
26、 of crimptool without interference with previously 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
27、maximum angular variation of anyopening shall 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. Th
28、ey shall be taperthreads (NPT).8. Workmanship, 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 t
29、he wall integrity.9. Assembly9.1 Crimp JointsInsert 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 ring
30、s shall meet the dimen-sional and material 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, ins
31、ert theribbed end of the fitting into the end 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
32、be centered overthe crimp ring and the tool 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
33、. Each crimp shall bechecked to determine conformance to the after-crimped dimen-sional requirements of Table 1.F243405210. 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 Mark
34、ing:10.2.1 Marking on fittings shall include manufacturersname or trademark, or some other identifying mark, and theASTM standard number.SizeAOutsideDiameterof RibBMinimumIDL1Distanceto FirstRibL2MinInsertLengthAHMinRibHeightNumberofRibsBWRibCWidthGRibSpacingTypicalTMinimumWallDR1MinimumRibRadiusR2M
35、inimumRadiusSIsolatorDiameterEEGrooveDepth12 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 0.66
36、7 0.214-0.224 0.795 0.013 4 0.030.04 0.0580.066 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 ri
37、b.CRib sides may be angled.DApplies to entire 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. Intere
38、sted parties are invited to submit information 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 Pl
39、acementF243405310.2.1.1 Where recessed marking 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 c
40、rimp rings shall include manufacturerstrademark 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 accordan
41、ce with this specification and has been found 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
42、 and TolerancesSizeAAvg OutsideDiameterA,BBCWidthWall 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
43、6 0.020AAll dimensions shall be measured with 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 ta
44、ken in at least two different circumferential 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 s
45、hall not inhibit assembly with the fitting 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,B
46、Minimum,in. (mm)Maximum,in. (mm)12 0.700 (17.8) 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
47、 crimped outside diameter and the maximum crimped outside diametershall not exceed 0.006 in. (0.150 mm).F243405412. Keywords12.1 cold and hot water distribution; copper crimp rings;cross-linked polyethylene; metal insert fittings; PEX;PEX-AL-PEXSUPPLEMENTARY REQUIREMENTSThis requirement applies when
48、ever a regulatory authority or user calls for 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 e
49、ffects 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 dimensions of the four sizes of crimpconnections covered by this specification. This information hasbeen taken from gages in current production at the time of thewriting of this specification. Gages shown here provide only areference for the maximum and minimum diamete
