1、Designation: F 2098 08An American National StandardStandard Specification forStainless Steel Clamps for Securing SDR9 Cross-linkedPolyethylene (PEX) Tubing to Metal Insert and Plastic InsertFittings1, 2This standard is issued under the fixed designation F 2098; the number immediately following the d
2、esignation 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 last revision or reapproval.1. Scope1.1 This specification covers
3、stainless steel clamps for usewith four sizes of insert fittings that comply with F 1807, andcross-linked polyethylene (PEX) plastic tubing that complieswith F 876 or F 877. These clamps are intended as an alterna-tive to the copper-alloy crimp-rings of Specifications F 1807 orF 2159 for use in 100
4、psi (689.5 kPa) cold- and hot-waterdistribution systems operating at temperatures up to andincluding 180F (82C). Included are requirements for mate-rials, workmanship, dimensions and marking of the stainlesssteel clamps; requirements for deforming the clamps; whichapply to assemblies of PEX tubing a
5、nd Specifications F 1807and F 2159, insert fittings secured with deformed clamps perthis specification.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI values stated in parentheses areprovided for information purposes.1.3 This standard does not purport to address a
6、ll of thesafety concerns, if any, associated with its use. It is theresponsibility 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:3A 240/A 240M Specif
7、ication for Chromium andChromium-Nickel Stainless Steel Plate, Sheet, and Stripfor Pressure Vessels and for General ApplicationsD 618 Practice for Conditioning Plastics for TestingD 1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD 1599 Test Method for Resistance
8、to Short-Time Hydrau-lic Pressure of Plastic Pipe, Tubing, and FittingsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsE 18 Test Methods for Rockwell Hardness of MetallicMaterialsF 412 Terminology Relating t
9、o Plastic Piping SystemsF 876 Specification for Crosslinked Polyethylene (PEX)TubingF 877 Specification for Crosslinked Polyethylene (PEX)Plastic Hot- and Cold-Water Distribution SystemsF 1807 Specification for Metal Insert Fittings Utilizing aCopper Crimp Ring for SDR9 Cross-linked Polyethylene(PEX
10、) TubingF 2159 Specification for Plastic Insert Fittings Utilizing aCopper Crimp Ring for SDR9 Cross-linked Polyethylene(PEX) Tubing3. Terminology3.1 Definitions are in accordance with Terminology F 412and abbreviations are in accordance with Terminology D 1600,unless otherwise indicated.4. Classifi
11、cation4.1 This specification covers one class of stainless steelclamps in four sizes suitable for securing PEX tubing thatmeets the requirements of Specifications F 876 or F 877 toinsert fittings that meet the requirements of SpecificationsF 1807 and F 2159.5. Materials and Manufacture5.1 ClampsClam
12、ps shall be made from material meetingthe requirements of Specification A 240 stainless steel UNSS304000.1This 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 March 1,
13、2008. Published March 2008. Originallyapproved 2001. Last previous edition approved in 2004 as F209804e1.2The stainless steel clamp described in this standard is covered by a patent.Interested parties are invited to submit information regarding the identification of analternative to this patented it
14、em toASTM Headquarters.Your comments will receivecareful 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
15、 standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. General Requirements6.1 The following sections of Specification F 877 constitutea part of this specification.6.1.1 Requirements,6.
16、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 Specification F 877.6.3 GeneralAll performance tests shall be p
17、erformed onassemblies of fittings, clamps and PEX tubing. Clamps shallmeet the material and dimensional requirements of this speci-fication. Metal insert fittings shall meet the material anddimensional requirements of Specification F 1807. Plasticinsert fittings shall meet the material and dimension
18、al require-ments of Specification F 2159. PEX tubing shall meet therequirements of Specification F 876 or F 877. Assembly of testspecimens shall be in accordance with 9.1.1. Each assemblyshall contain at least two (2) joints. Use separate sets ofassemblies for each performance test requirement.7. Di
19、mensions7.1 Dimensions and TolerancesThe dimensions and tol-erances of clamps shall be as shown in Figs. 1-4.8. Workmanship, Finish and Appearance8.1 The surfaces of the clamps shall be smooth and free offoreign material. Clamps shall be free of cracks, holes, corro-sion, voids, foreign inclusions,
20、or other defects that are visibleto the unaided eye that have potential to affect the clampintegrity.9. Assembly9.1 Clamp JointsInsert fittings shall be joined to PEXtubing by deforming and locking a stainless steel clamp aroundthe outer circumference of the tubing, forcing the tubingmaterial into a
21、nnular spaces formed by the ribs on the fitting.Metal insert fittings shall meet the material and dimensionalrequirements of Specification F 1807. Plastic insert fittingsshall meet the material and dimensional requirements ofSpecification F 2159. PEX tubing shall meet the requirementsof Specificatio
22、ns F 876 or F 877. Clamps shall meet thedimensional and material requirements of this specification.9.1.1 Clamping ProcedureThe clamping procedure shallbe as follows: slide the clamp onto the tubing, insert the ribbedend of the fitting into the end of the tubing until the tubingcontacts the shoulder
23、 of the fitting or tube stop. The clamp shallthen be positioned on the tubing so the edge of the clamp is18to14 in. (3.2 to 6.4 mm) from the end of the tube. Theratcheting clamping tool shall be used to close the clamp. Thetool will not release until the clamp is properly closed.Ratcheting hand tool
24、s shall conform to the dimensional re-quirements of Fig. 3.10. Retest10.1 If any failure occurs, a retest shall be conducted only ifagreed upon between the purchaser and the seller. Failure in theretest indicates the quantity of clamps represented by thesample does not conform to the requirements of
25、 this specifi-cation.11. Product Marking11.1 Quality of MarkingThe marking shall be applied tothe clamps in such a manner that it remains legible afterinstallation and inspection.11.2 Content of Marking:11.2.1 Marking on clamps shall include manufacturersname or trademark, or some other identifying
26、mark, and if sizepermits, the designation, “F 2098”.11.2.1.1 Where recessed marking is used on clamps, careshall be taken to see that the marking shall not cause cracks orreduce the wall thickness below the minimum specified.11.2.2 Marking on packaging shall include manufacturersname, clamp size, an
27、d “ASTM F 2098 for use with ASTMF 1807 and F 2159 insert fittings.”12. Quality Assurance12.1 When the clamp or clamp packing is marked with theASTM designation “F 2098” the manufacturer affirms that theproduct was manufactured, inspected, sampled, and tested inaccordance with this specification and
28、has been found to meetthe requirements of this specification. The manufacturer furtheraffirms that when clamps so marked are used to in accordancewith this specification to secure PEX tubing conforming toF 876 or F 877 to insert fittings conforming to SpecificationsF 1807 or F 2159, the assembled jo
29、ints will conform to theperformance requirements of this specification.F209808213. Dimensions13.1 Design and Layout, as noted in Fig. 1 are for “refer-ence” only. Specific dimensions and clamp features, other thanwhat is noted in Fig. 2 as “Critical Dimensions” are to be leftat the discretion of the
30、 individual manufacturer to accommo-date varying manufacturing processes.14. Tolerances14.1 Tolerances on all critical dimensions, except “thick-ness” (T), are 6 0.010 in. (6 0.25 mm). “Thickness” (T)tolerances are specifically noted in Fig. 2.15. Keywords15.1 cold and hot water distribution; cross-
31、linked polyeth-ylene; metal insert fittings; PEX; stainless steel clampsFIG. 1 Design and LayoutFIG. 2 Critical DimensionsF2098083ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard a
32、re expressly advised that determination of the validity of any such patent 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
33、 revised, either reapproved or withdrawn. Your comments are invited either 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 y
34、ou may attend. If you feel that your comments have not received a fair 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,Unite
35、d States. Individual reprints (single or multiple copies) of this standard 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).Openmax minin. 0.591 0.511mm (15.0) (13.0)Closed di
36、mensions, for ratcheting hand tool, to be calibrated in accordance with the clamp manufacturers specified dimensional recommendations and practices.FIG. 3 Ratcheting Hand Tool Critical DimensionsArrows indicate various areas that can be checked or gauged, after crimping, to validate an effective final assembly. This validation should be conducted in accordancewith the clamp manufacturers specified dimensional recommendations and practices.FIG. 4 Dimensional Checks to Validate Effective Final AssemblyF2098084
