1、Designation: F1961 09 An American National StandardStandard Specification forMetal Mechanical Cold Flare Compression Fittings with DiscSpring for Crosslinked Polyethylene (PEX) Tubing12This standard is issued under the fixed designation F1961; the number immediately following the designation indicat
2、es 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 revision or reapproval.1. Scope*1.1 This specification covers metal mechanical c
3、old flarecompression fittings with integral disc spring suitable for usewith cross-linked polyethelene PEX plastic tubing in38,12 ,58,and34 nominal diameters. that meets the requirements ofSpecifications F876 and F877. These fittings are intended foruse in 100 psi (689.5 kPa) cold and hot water dist
4、ributionssystems and hydronic heating systems operating at tempera-tures up to and including 180F (82C). Included are therequirements for materials, workmanship, dimensions, andmarkings to be used on the fittings.1.2 UnitsThe values stated in inch-pounds units are to beregarded as the standard. The
5、values given in parentheses aremathematical conversions to SI units which are provided forinformation only 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 theresponsibility of the user of this standard to
6、 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3A666 Specification for Annealed or Cold-Worked AusteniticStainless Steel Sheet, Strip, Plate, and Flat BarB16/B16M Specification for
7、Free-Cutting Brass Rod, Barand Shapes for Use in Screw MachinesB140/B140M Specification for Copper-Zinc-Lead (RedBrass or Hardware Bronze) Rod, Bar, and ShapesB283 Specification for Copper and Copper-Alloy Die Forg-ings (Hot-Pressed)D1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2122 T
8、est Method for Determining Dimensions of Ther-moplastic Pipe and FittingsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsF412 Terminology Relating to Plastic Piping SystemsF876 Specification for Crosslinked Polyethylene (PEX) Tub-ingF877 Specification for Crosslinked Polyethylene (PEX)
9、Hot-and Cold-Water Distribution Systems2.2 ASME Standards:4B1.20.1 Pipe Threads General Purpose (inch)B16.18 Cast Copper Alloy Solder Joint Pressure FittingsB16.22 Wrought Copper and Copper Alloy Solder JointPressure Fittings2.3 NSF Standards:5NSF 14 Plastic Piping Components and Related MaterialsNS
10、F 61 Drinking Water System Components-Health Effects2.4 DIN Standard:6DIN 1766.2.5 Other Standard:7MSS SP-104, Wrought Copper Solder Joint Pressure Fittings3. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology F412 and abbreviations are in accordance with Termi-nology D1600 un
11、less otherwise indicated.1This 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 Dec. 1, 2009. Published January 2010. Originallyapproved in 1999. Last previous edition
12、approved in 2002 as F196102a. DOI:10.1520/F1961-09.2The cold flare compression fitting with integral disc spring is covered by apatent. Interested parties are invited to submit information regarding the identifica-tion of an alternative to this patented item to ASTM headquarters. Your commentswill r
13、eceive careful consideration at a meeting of F17, which you may attend.3For 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.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.5Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.6Available from D
15、eutsches Institut Fur Normung eV. Burggrafenstrasse 4 Berlin30, West Germany D-1000.7Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.*A Summary of Changes section appears at the end of this standard
16、Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of Inter
17、national Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14. Classification4.1 This specification covers one class of mechanical coldflare compression fittings suitable for use with four sizes ofPEX tubing that meets the requir
18、ements of Specifications F876and F877.5. Materials and Manufacture5.1 FittingsThe fittings shall be made from one of thefollowing metals:5.1.1 Machined Brass FittingsMachined brass fittingsshall be made from material meeting the requirements ofSpecification B140/B140M copper alloy UNS C31400, Speci-
19、fication B16/B16M Copper Alloy UNS C38500, or CopperAlloy UNS No. C27450, or DIN 17660 CuZn39Pb3.5.1.2 Forged Brass FittingsForged brass fittings shall bemade from material meeting the requirements of SpecificationB283, Copper Alloy UNS C37700, or Copper Alloy UNS No.C27450, or DIN 17660-CuZn40Pb2.5
20、.1.3 Disc SpringThe disc spring assembly consists ofone conical compression washer and one flat washer. Bothwashers shall be made from material meeting the requirementsof Specification A666 stainless steel UNS S30100. The flatwasher shall be12 hard. The minimum hardness of the conicalcompression was
21、her shall be HRC 40.6. General Requirements6.1 The following sections of Specification F877 constitutea part of this specification:6.1.1 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 t
22、his specification, itcontains additional requirements that supplement those appear-ing in Specification F877.6.3 Performance Requirements:6.3.1 GeneralAll performance test shall be preformed inassemblies of fittings and PEX tubing as defined in 8.3. Fittingsand compression sleeves shall meet the mat
23、erial and dimen-sional requirements of this standard. PEX tubing shall meet therequirements of Specifications F876 and F877. Assembly oftest specimens shall be in accordance with 9.2. Use separate setof assemblies for each performance test requirement.6.3.2 Dimensions Randomly selected fitting or fi
24、ttingsand PEX reinforcing rings shall be used to determine dimen-sions. Measurements shall be made in accordance with TestMethod D2122. Determine the diameters by making measure-ments at four points spaced at approximately 45 apart aroundthe circumference. Inspection and gauging of taper joint endss
25、hall be in accordance with ANSI B16.18, or ANSI B16.22, orMSS SP-104. Inspection and gaging of taper pipe threads shallbe in accordance with ANSI B1.20.1. All fittings that will besubjected to secondary processes of mechanical marking,which affect their dimensional tolerances, shall be tested inthei
26、r final marked configuration.7. Dimensions7.1 Dimensions and TolerancesThe dimensions and toler-ances of fitting components shall be as shown in Figs. 1-3when measured in accordance with 6.3.2. Dimensions andproperties of flat and conical compression washer componentsof disc springs shall be in acco
27、rdance with Table 1.7.1.1 AlignmentThe maximum angular variation of anyopening shall not exceed12 off the true centerline axis.7.1.2 Fittings with Solder Joint EndsExternal dimensionsof solder joint ends shall be in accordance with ANSI B.16.22,B16.18, or MSS SP-104.7.1.3 Tapered Threaded EndsFittin
28、g threads shall beright-hand conforming to ANSI B1.20.1. They shall be taperthreads (NPT).8. Workmanship, Finish, and Appearance8.1 The sealing surfaces of the fitting(s) shall be smooth andfree of foreign material. The fitting walls shall be free ofcracks, holes, blisters, voids, foreign inclusions
29、 or other defectsthat are visible to the eye without magnification and that havepotential to affect the wall integrity.9. Assembly9.1 JointsMechanical cold flare compression fittings shallbe joined to PEX tubing by the procedure of 8.2. Fittings shallmeet the dimensional tolerances of this standard.
30、 PEX tubingshall meet the requirements of Specifications F876 and F877.9.1.1 Solder JointsSoldering of fitting joints shall becompleted prior to installation of the PEX tubing. Excessiveheat from the soldering operation will damage the PEX tubing.9.2 Assembly ProcedureRefer to Fig. 4 for a cross-sec
31、tionof a fully-assembled cone union with PEX tubing and malefitting end. To affix the mechanical cold flare compressionfitting to PEX tubing, the procedure shall be as follows:9.2.1 Cut the tubing square using a cutter designed forplastic tubing. Inspect the end for burrs or foreign debris. Placethe
32、 proper-size cone union assembly (female fitting) onto theassembly tool. Place the PEX tubing into the tool, so that thecut end abuts the cone union. Grip the PEX tubing by closingthe locking handle of the tool until the tool locks. Fully closethe compression lever. This action both presses the grip
33、 ring ofthe cone union assembly onto the PEX tubing, and flares theend of the PEX tubing to an angle of 22. Open the compres-sion lever to release the PEX tubing and the fitting. Tighten thecone union nut onto the mating (male) end of the desiredfitting, until the torque shown in Table 2 has been ap
34、plied.Custom torque wrenches that are adjusted to slip at thesetorque values are available and appropriate.9.3 One assembly for testing purposes is one fitting withPEX tubing assembled onto each leg of the fitting.10. Quality Assurance10.1 When the product or product packaging is marked withtheASTM
35、designation F1961, the manufacturer affirms that theproduct was manufactured, inspected, sampled, and tested inaccordance with this specification, and has been found to meetthe requirements of this specification.F1961 092FIG.1MaleFittingDimensionsF1961 093FIG.2UnionNutDimensionsF1961 094FIG.3GripRin
36、gDimensionsF1961 09511. Product Marking11.1 Quality of MarkingThe marking shall be applied tothe fittings in such a manner that it remains legible afterinstallation and inspection.11.2 Content of Marking:11.2.1 Marking on fittings shall include manufacturersname or trademark, or some other identifyi
37、ng mark. Additionalmarking shall includeASTM standard number and PEX, if sizepermits.TABLE 1 Dimensions and Properties of Flat and Conical Compression Washers for Disc SpringsNominal FittingSize, in.Shape Outside Diameter, in. Inside Diameter, in. Thickness, in. Spring Height, in.Initial SpringConst
38、ant, lbf/in.38 flat 0.675 to 0.681 0.539 to 0.545 0.023 to 0.027AAConical compression 0.660 to 0.664 0.544 to .0548 0.028 to 0.032 0.010 16000 to 2300012 flat 0.866 to 0.870 0.697 to 0.701 0.037 to 0.041AAConical compression 0.854 to 0.858 0.700 to 0.704 0.037 to 0.041 0.011 25000 to 4200058 flat 1.
39、080 to 1.088 0.835 to 0.841 0.038 to 0.042AAConical compression 1.067 to 1.071 0.843 to 0.847 0.048 to 0.052 0.016 18000 to 2600034 flat 1.192 to 1.198 0.956 to 0.962 0.048 to 0.052AAConical compression 1.172 to 1.176 0.964 to 0.968 0.053 to 0.057 0.015 23000 to 48000ANot applicable.FIG. 4 Cross-Sec
40、tion (Typical) of Cone Union/PEX Tube/Male FittingF1961 09611.2.1.1 Where recessed marking is used on fittings, careshall be taken to see that in no case shall the marking causecracks or reduce the wall thickness below the minimumspecified.11.2.2 Marking on packaging shall include manufacturersname,
41、 fitting size and ASTM F1961.11.2.3 Markings on compression sleeves shall includemanufacturers trademark or some other identifying mark andASTM F1961.12. Keywords12.1 cold and hot water distribution; cold expansion insertfittings; crosslinked polyethylene; PEXSUPPLEMENTARY REQUIREMENTSS1. POTABLE WA
42、TER REQUIREMENTSS1.1 This requirement applies whenever a regulatory au-thority or user calls for product to be used to convey or be incontact with potable water.S1.2 Products intended for the transport of potable watershall be evaluated, tested and certified for conformance withANSI/NSF 61 or the he
43、alth effects portion of NSF 14 by anacceptable certifying organization when required by the regu-latory authority having jurisdiction.SUMMARY OF CHANGESCommittee F17 has identified the location of selected changes to this standard since the last issue (F196102a)that may impact the use of this standa
44、rd.(1) Added Copper alloy UNS No. C27450 to 5.1.1 and 5.1.2.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such pa
45、tent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited ei
46、ther for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair
47、 hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this stan
48、dard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 2 Torque Values for Tightening Cone Union AssembliesSize, in. Torque, lbf/in. (N/m)A38 125 (14)12 140 (16)58 300 (35)44 450 (50)AAll torque values are specified as the above 10 %.F1961 097
