ASTM F2098-18

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it 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 version
of the standard as published by ASTM is to be considered the official document.
Designation: F2098 − 15 F2098 − 18 An American National Standard
Standard Specification for
Stainless Steel Clamps for Securing SDR9 Cross-linked
Polyethylene (PEX) Tubing and SDR9 Polyethylene of
Raised Temperature (PE-RT) to Metal Insert and Plastic
Insert Fittings
This standard is issued under the fixed designation F2098; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This specification covers stainless steel clamps for use with five sizes of insert fittings that comply with F1807 or F2159,
and cross-linked polyethylene (PEX) plastic tubing that complies with F876 and for use with polyethylene of raised temperature
(PE-RT) tubing that complies with Specification F2769. These clamps are intended as an alternative to the copper-alloy crimp-rings
of Specifications F1807 for use in 100 psi (689.5 kPa) cold- and hot-water distribution systems operating at temperatures up to
and including 180°F (82°C). Included are requirements for materials, workmanship, dimensions and marking of the stainless steel
clamps; requirements for deforming the clamps; which apply to assemblies of PEX tubing and Specifications F1807 and F2159,
insert fittings secured with deformed clamps per this specification.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and
for General Applications
D1600 Terminology for Abbreviated Terms Relating to Plastics
F412 Terminology Relating to Plastic Piping Systems
F876 Specification for Crosslinked Polyethylene (PEX) Tubing
F877 Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water Distribution Systems
F1807 Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing
and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing
F2159 Specification for Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX)
Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing
F2769 Specification for Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution
Systems
3. Terminology
3.1 Definitions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology D1600, unless
otherwise indicated.
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 Nov. 1, 2015Nov. 15, 2018. Published February 2016February 2019. Originally approved 2001. Last previous edition approved in 20082015 as
F2098–08.–15. DOI: 10.1520/F2098-15.10.1520/F2098-18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2098 − 18
4. Classification
4.1 This specification covers one class of stainless steel clamps in five sizes suitable for securing PEX tubing that meets the
requirements of Specifications F876 or PE-RT tubing that meets the requirements of Specification F2769, to insert fittings that meet
the requirements of Specifications F1807 and F2159.
5. Materials and Manufacture
5.1 Clamps—Clamps shall be made from material meeting the requirements of Specification A240/A240M stainless steel UNS
S304000.
6. General Requirements
6.1 The following sections of Specification F877 and Specification F2769 constitute a part of this specification. Only the
sections of the referenced standard which apply to the type of pipe being tested shall be required as part of this section.
6.1.1 Requirements,
6.1.2 Test Methods, and
6.1.3 Retest and Rejection.
6.2 In addition, when a section with a title identical to that referenced in 6.1 above, appears in this specification, it contains
additional requirements that supplement those appearing in Specification F877 or Specification F2769 .
6.3 General—All performance tests shall be performed on assemblies of fittings, clamps and PEX or PE-RT tubing. Clamps
shall meet the material and dimensional requirements of this specification. Metal insert fittings shall meet the material and
dimensional requirements of Specification F1807. Plastic insert fittings shall meet the material and dimensional requirements of
Specification F2159. PEX tubing shall meet the requirements of Specification F876 and PE-RT tubing shall meet the requirements
of Specification F2769. Assembly of test specimens shall be in accordance with 9.1.1. Each assembly shall contain at least two
(2) joints. Use separate sets of assemblies for each performance test requirement.
7. Dimensions
7.1 Dimensions and Tolerances—The dimensions and tolerances of clamps shall be as shown in Figs. 1-4 and Table 1 and Table
2.
8. Workmanship, Finish, and Appearance
8.1 The surfaces of the clamps shall be smooth and free of foreign material. Clamps shall be free of cracks, holes, corrosion,
voids, foreign inclusions, or other defects that are visible to the unaided eye that have potential to affect the clamp integrity.
8.1.1 The manufacturer shall verify that any residual manufacturing substances on clamps are compatible with PEX and PE-RT
System components such as PEX and PE-RT tube or insert fittings.
9. Assembly
9.1 Clamp Joints—Insert fittings shall be joined to PEX or PE-RT tubing by deforming and locking a stainless steel clamp
around the outer circumference of the tubing, forcing the tubing material into annular spaces formed
...