1、Designation: F2434 09F2434 14 An 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 und
2、er the fixed designation F2434; 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 t
3、he last revision or reapproval.1. Scope*1.1 This specification covers metal insert fittings with o-ring seals and copper crimp rings for use with Cross-linkedPolyethylene (PEX) and Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene (PEX-AL-PEX) tubing in 12, 34 1, and114 in. nominal diamet
4、ers that meet the requirements for Specifications F876 and F2262. These fittings are intended for use in 125psi (861.9 kPa) (PEX-AL-PEX) and 100 psi (689.5 kPa) (PEX) cold- and hot-water distribution systems operating at temperaturesup to and including 180F (82C). Included are the requirements for m
5、aterials, workmanship, dimensions, performance, andmarkings to be used on the fittings and rings.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not consid
6、ered standard.1.3 Compliance with this specification requires that these fittings be tested and certified to Specification F877 and F2262.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to
7、 establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw MachinesB62 Specification for Composition Bronze or O
8、unce Metal CastingsB140/B140M Specification for Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bar, and ShapesB283 Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)B371/B371M Specification for Copper-Zinc-Silicon Alloy RodB584 Specification for Copper Alloy Sand Castings for
9、 General ApplicationsD1600 Terminology for Abbreviated Terms Relating to PlasticsD2122 Test Method for Determining Dimensions of Thermoplastic Pipe and FittingsE18 Test Methods for Rockwell Hardness of Metallic MaterialsF412 Terminology Relating to Plastic Piping SystemsF876 Specification for Crossl
10、inked Polyethylene (PEX) TubingF877 Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water Distribution SystemsF2262 Specification for Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Tubing OD Controlled SDR92.2 ASME Standards:3B1.20.1 Pipe Threads General Purpose (Inch)B16.
11、18 Cast Copper Alloy Solder Joint Pressure Fittings1 This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved Dec. 1, 2009Aug. 1, 2014. Published January 2010September 201
12、4. Originally approved in 2004. Last previous edition approved in 20082009as F2435 - 08.F2435 - 09. DOI: 10.1520/F2434-09.10.1520/F2434-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume
13、information, refer to the standards Document Summary page on the ASTM website.3 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.This document is not an ASTM standard and is intended only to
14、provide the user of an ASTM standard an indication of what changes have been made to the previous version. 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
15、the standard as published by ASTM is to be considered the official document.*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 States1B16.22 Wrought Copper and Copper Alloy Solder
16、 Joint Pressure Fittings2.3 Manufacturers Standardization Society Standard:SP-104 Wrought Copper Solder Joint Pressure Fittings42.4 NSF International Standards:5NSF/ANSI 14 Plastic Piping Components and Related MaterialsNSF/ANSI 61 Drinking Water System Components-Health Effects3. Terminology3.1 Def
17、initions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology D1600, unlessotherwise indicated.4. Classification4.1 This specification covers one class of fittings and copper crimp rings suitable for use with tubing that meets the requirementsof Specifications
18、 F876 and F2262.5. Materials and Manufacture5.1 FittingsThe fittings shall be made from one of the following metals:5.1.1 Cast Copper AlloysCast copper alloy fittings shall be made from material meeting the requirements of SpecificationB584, Copper Alloy UNS Nos. C84400, C83800, C87850 or C89844 or
19、Specification B62 Copper Alloy UNS No. C83600.5.1.2 Machined BrassMachined brass fittings shall be made from material meeting the requirements of SpecificationB371/B371M, Copper Alloy UNS No. C69300, Specification B140/B140M Copper Alloy UNS No. C31400, Specification B283Copper Alloy UNS No. C37700,
20、 or Specification B16/B16M Copper Alloy UNS No. C36000 or C69300 Copper Alloy UNS No.C27450.5.1.3 Forged BrassForged brass fittings shall be made from material meeting the requirements of Specification B283 CopperAlloy UNS Nos. C37700 or Copper Alloy UNS No. C27450.5.2 Crimp RingsCrimp rings shall b
21、e made from copper UNS Nos. C10200, or C12200, and shall be black in color. color oralternately be identified per 10.2.3.2 of this specification. The crimp rings shall have a minimum allowable hardness of 35 and amaximum allowable hardness of 45 on the Rockwell 15T scale when measured according to T
22、est Methods E18.5.3 O-ringsO-rings used on the copper alloy fittings to make a static seal shall be manufactured from ethylene propylenerubber (EPDM) or silicone rubber (Si), with a ShoreAdurometer between 60 and 70 when tested in accordance with SpecificationD2240.6. General Requirements6.1 The fol
23、lowing sections of Specifications F877 and F2262 constitute a part of this specification.6.1.1 Use with PEX Tubing (F877):6.1.1.1 Requirements,6.1.1.2 Test Methods, and6.1.2 Use with PEX-AL-PEX Tubing (F2262):6.1.2.1 Performance Requirements of Connectors except product marking section.6.1.3 Retest
24、and Rejection.6.2 In addition, when a section with a title identical to that referenced in 6.1, appears in this specification, it contains additionalrequirements that supplement those appearing in Specifications F877 and F2262.6.3 DimensionsAny randomly selected fitting or fittings, and crimp ring o
25、r crimp rings, shall be used to determine dimensions.Measurements shall be made in accordance with Test Method D2122, except determine diameters by making measurements at fourlocations spaced approximately 45 apart around the circumference. Inspection and gauging of solder joint ends shall be inacco
26、rdance with ASME B16.18, ASME B16.22, or MSS SP-104.6.4 GeneralAll performance tests shall be performed on assemblies of fittings, crimp rings, PEX, and PEX-AL-PEX tubing.Fittings and crimp rings shall meet the material and dimensional requirements of this specification. PEX tubing shall meet thereq
27、uirements of Specification F876. PEX-AL-PEX tubing shall meet the requirements of Specification F2262. Assembly of testspecimens shall be in accordance with 9.1.1. Use separate sets of assemblies for each performance test requirement. In addition,fittings shall be designed with sufficient overall di
28、mensions to allow proper use of crimp tool without interference with previouslycompleted crimps on the same fitting.4 Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.5 Available from NSF Internatio
29、nal, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http:/www.nsf.org.F2434 1427. Dimensions7.1 Dimensions and TolerancesThe dimensions and tolerances of fittings and crimp rings shall be as shown in Fig. 1, Fig. 3,Fig. 4, and Table 1, when measured in accordance with 6.3.7.1.1 Align
30、mentThe maximum angular variation of any opening shall not exceed 1 off the true centerline axis.7.1.2 Fittings with Solder Joint EndsSolder joint ends shall be in accordance with ASME B16.22, ASME B16.18, or MSSSP-104.7.1.3 Tapered Threaded EndsFitting threads shall be right-hand conforming to ASME
31、 B1.20.1. They shall be taper threads(NPT).8. Workmanship, Finish, and Appearance8.1 The sealing surfaces of the insert shall be smooth and free of foreign material. Fitting walls shall be free of cracks, holes,blisters, voids, foreign inclusions, or other defects that are visible to the unaided eye
32、, that affect the wall integrity.9. Assembly9.1 Crimp JointsInsert fittings shall be joined to PEX, or PEX-AL-PEX, tubing by the compression of a copper crimp ringaround the outer circumference of the tubing, forcing the tubing material into annular spaces formed by ribs on the fitting. Insertfittin
33、gs and crimp rings shall meet the dimensional and material requirements of this standard. The dimensions andout-of-roundness of the crimp ring, after it has been crimped, shall be in accordance with Table 1.SizeAOutsideDiameterof RibBMini-mumIDL1Distanceto FirstRibL2MinInsertLengthAHMinRibHeightNum-
34、berofRibsBWRibCWidthGRibSpacingTypicalTMini-mumWallDR1Mini-mumRibRa-diusR2Mini-mumRa-diusSIsolatorDiameterEEGrooveDepth12 in. 0.471 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 0.002 0.040 0.00134 in. 0.667 0.004 0.500 0.214-0.224 0.625 0.013 3 0.030.04 0.0580.06
35、6 0.037 0.006 0.015 0.738 0.005 0.040 0.0011 in. 0.856 0.004 0.667 0.214-0.224 0.795 0.013 4 0.030.04 0.0580.066 0.041 0.006 0.015 0.963 0.005 0.040 0.001114 in. 1.045 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 0.005 0.040 0.001A Measured from shoulder of rib t
36、o end of fitting.B Lead chamfer area is not considered a rib.C Rib sides may be angled.D Applies to entire fitting, not just insert area.E This 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 Toler
37、ancesF2434 1439.1.1 Crimping ProcedureThe crimping procedure shall be as follows: slide the crimp ring onto the tubing, insert the ribbedend of the fitting into the end of the tubing until the tubing contacts the shoulder of the fitting or tube stop. The crimp ring shallthen be positioned on the tub
38、ing so the edge of the crimp ring is 18 to 14 in. (3.2 to 6.4 mm) from the end of the tube. The jawsof the crimping tool shall be centered over the crimp ring and the tool shall be held so that the crimping jaws are approximatelyperpendicular to the axis of the barb. The jaws of the crimping tool sh
39、all be closed around the crimp ring, compressing the crimpring onto the tubing. The crimp ring shall not be crimped more than once. Each crimp shall be checked to determine conformanceto the after-crimped dimensional requirements of Table 1.10. Product Marking10.1 Quality of MarkingThe marking shall
40、 be applied to the fittings in such a manner that it remains legible after installationand inspection.10.2 Content of Marking:10.2.1 Marking on fittings shall include manufacturers name or trademark, or some other identifying mark, and the ASTMstandard number.10.2.1.1 Where recessed marking is used
41、on fittings, care shall be taken to see that the marking shall not cause cracks or reducethe wall thickness below the minimum specified.10.2.2 Marking on packaging shall include manufacturersmanufacturers name, fitting size, and ASTM F2434.10.2.3 Marking on crimp rings shall include manufacturers tr
42、ademark or some other identifying mark andASTM F2434. Crimprings:10.2.3.1 Marking on crimp rings shall include manufacturers trademark or some other identifying mark and ASTM F2434.10.2.3.2 Manufacturer of crimp rings may use an alternate identifying marking in place of the “black in color” provided
43、 the ringis generally natural copper color with 18 in. minimum black font lettering stating “PEX” or “PEX-AL-PEX,” or both legibly printedNOTE 1The Barb/O-ring design is covered by a patent. Interested parties are invited to submit information regarding the identification of analternative(s) to this
44、 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 PlacementSizeIDInsideDiameterWO-ringCross Section12 in. 0.394 0.005 0.039 0.00334 in. 0.591 0.005 0.039 0
45、.0031 in. 0.768 0.009 0.039 0.003114 in. 0.945 0.009 0.039 0.003FIG. 3 Fitting O-ring Dimensions and TolerancesF2434 144in two (2) locations spaced equally, approximately 180 on the rings outer circumference. For sizes smaller than 34 in. where both“PEX” and “PEX-AL-PEX” marks are applied, it is per
46、missible to only print “PEX” and “PEX-AL-PEX” in one location on thecircumference.11. Quality Assurance11.1 When the product or product packing is marked with the ASTM designation F2434, the manufacturer affirms that theproduct was manufactured, inspected, sampled, and tested in accordance with this
47、 specification and has been found to meet therequirements of this specification.12. Keywords12.1 cold and hot water distribution; copper crimp rings; cross-linked polyethylene; metal insert fittings; PEX; PEX-AL-PEXSizeAAvg OutsideDiameterA,BB CWidthWall ThicknessB Average WallC ,D12 in. 0.750 0.003
48、 0.056 0.0035 0.002 0.325 0.02034 in. 1.000 0.003 0.056 0.0035 0.002 0.325 0.0201 in. 1.250 0.003 0.049 0.0035 0.002 0.450 0.020114 in. 1.500 0.003 0.055 0.0035 0.002 0.550 0.020A All dimensions shall be measured with appropriate micrometers, such as pin or ball micrometers for wall and outside diam
49、eter micrometers with flat anvils or verniercalipers shall be used to measure outside diameters and width of rings.B The average measurement is obtained from measurements taken in at least two different circumferential positions which are equally spaced around the circumference.C The average wall measurement is obtained from measurements taken in eight different positions which are equally spaced around the circumference.D The maximum out-of-roundness
