ASTM F2829/F2829M-21

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: F2829/F2829M − 20 F2829/F2829M − 21 An American National Standard
Standard Specification for
Metric- and Inch-Sized Fittings for Crosslinked Polyethylene
(PEX) Pipe
This standard is issued under the fixed designation F2829/F2829M; 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*
1.1 This specification covers performance requirements, test methods, and marking requirements for metric- and inch-sized fittings
for use with Specification F2788F2788/F2788M, F2905/F2905M, and F2968/F2968M PEX pipe. The following performance
requirements are described for the fittings – 73 °F [23 °C] hydrostatic strength, 176 °F [80 °C] hydrostatic strength, short-term
internal pressure resistance, resistance to tensile loads, cohesive resistance for electrofusion fittings at both the minimum and
maximum recommended temperatures, impact resistance for saddle fittings, and leak tightness and pull out tests for mechanical
fittings. The metric- and inch-sized components covered by this specification are intended for the above-ground and buried pressure
piping applications, such as industrial and general-purpose pipelines, potable water pipelines up to 140 °F (60 °C),[60 °C], fire –
extinguishing pipelines.
1.2 Crosslinking requirements for PEX pipe are found in Specifications F2788F2788/F2788M, F2905/F2905M, and F2968/
F2968M.
1.3 Requirements for materials, workmanship, and qualification testing performance are included.
1.4 The text of this specification references notes, footnotes, and appendixes, which provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text the SI units
are shown in brackets. The values stated in each system may not be exact equivalents: therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
NOTE 1—Suggested hydrostatic design stresses and hydrostatic pressure ratings for pipe and fittings are listed in Appendix X1. Design, assembly, and
installation considerations are discussed in Appendix X2. An optional performance qualification and an in-plant quality control program are recommended
in Appendix X3.
1.6 The following safety hazards caveat pertains only to the test method portion, Section 7, of this specification: 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, health, and environmental practices and determine the applicability of regulatory
limitations prior to use.
1.7 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.
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 Feb. 1, 2020May 1, 2021. Published March 2020May 2021. Originally approved in 2010. last previous edition approved in 20152020 as
F2829–15.–20. DOI: 10.1520/F2829_F2829M–20.10.1520/F2829_F2829M–21.
*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
F2829/F2829M − 21
2. Referenced Documents
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1898 Practice for Sampling of Plastics (Withdrawn 1998)
D2749 Symbols for Dimensions of Plastic Pipe Fittings
D2837 Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for
Thermoplastic Pipe Products
F412 Terminology Relating to Plastic Piping Systems
F1055 Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked
Polyethylene (PEX) Pipe and Tubing
F2788F2788/F2788M Specification for Metric and Inch-sized Crosslinked Polyethylene (PEX) Pipe
F2905/F2905M Specification for Crosslinked Polyethylene (PEX) Line Pipe For Oil and Gas Producing Applications
F2968/F2968M Specification for Crosslinked Polyethylene (PEX) Pipe for Gas Distribution Applications
F3373 Specification for Polyethylene (PE) Electrofusion Fittings for Outside Diameter Controlled Crosslinked Polyethylene
(PEX) Pipe
2.2 Federal Standard:
Fed Std. No. 123 Marking for Shipment (Civil Agencies)
2.3 Military Standard:
MIL-STD-129 Marking for Shipment and Storage
2.4 NSF Standard:
Standard No. 14 for Plastic Piping Components and Related Materials
NSF/ANSI 61 Drinking Water System Components -- Health Effects
2.5 ISO Standards:
ISO 4427-3 Plastic piping systems – Polyethylene (PE) pipes and fittings for water supply – fittings
ISO 4427-5 Plastic piping systems – Polyethylene (PE) pipes and fittings for water supply – fitness for purpose of the system
ISO 15875-3 – Plastic piping systems for hot and cold water installations – Crosslinked polyethylene (PE-X) – fittings
ISO 15875-5 – Plastic piping systems for hot and cold water installations – Crosslinked polyethylene (PE-X) – fitness for
purpose of the system
2.6 Plastic Pipe Institute:
PPI TR-4 PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), Pressure Design Basis (PDB) and
Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe
2.7 NACE Standard:
MR0175 Petroleum and natural gas industries – Materials for use in H S-containing environments in oil and gas production
3. Terminology
3.1 The terminology used in this specification is in accordance with Terminology F412, Terminology D1600, and Symbols D2749,
unless otherwise specified. The abbreviation for crosslinked polyethylene is PEX.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 crosslinked polyethylene, n—a polyethylene material that has undergone a change in molecular structure through processing
whereby a majority of the polymer chains are chemically linked.
3.2.1.1 Discussion—
ASTM standards for PEX pipe require a gel content level of 65 % to 89 % or 70 % to 89 %, depending on the type of crosslinking.
4. Materials
4.1 General—PEX fittings made in accordance with this specification are intended for use with Specifications F2788F2788/
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.
The last approved version of this historical standard is referenced on www.astm.org.
Available from DLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48105, http://www.nsf.org.
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Irving, TX 75062, http://www.plasticpipe.org.
Available from NACE International (NACE), 15835 Park Ten Pl., Houston, TX 77084, http://www.nace.org.
F2829/F2829M − 21
F2788M, F2905/F2905M, or F2968/F2968M PEX pipe. Only metric-sized DN fittings shall be used for metric-sized pipe and only
inch-sized NPS fittings shall be used for inch-sized pipe. Metallic mechanical fittings used in sour service applications (> 4 ppm
of H S) shall comply with NACE MR0175.
NOTE 2—Contact the fitting manufacturer for suitability of PEX fittings used in the particular application.
4.2 Electrofusion fittings:
4.2.1 For polyethylene (PE) electrofusion fittings that are deemed suitable for joining to PEX pipe by the pipe manufacturer, the
pipe manufacturer shall qualify the PE electrofusion fitting by testing joints made between the PE electrofusion fitting and PEX
pipe, and assuring that these joints meet the performance requirements of the PE electrofusion fitting standard (for example,
SpecificationSpecifications F1055 or F3373).
4.2.2 PE electrofusion assemblies, using PEX pipe joined with PE electrofusion fittings, shall be limited to the maximum
temperature listed for the HDS rating, such as 140 °F [60 °C], for the PE material.
4.2.3 For higher temperatures, only PEX electrofusion fittings, made in accordance with ISO 15875-3, shall be used. The material
used to manufacture these fittings shall have an HDB or CRS listed at the maximum recommended temperature
4.3 PE electrofusion and mechanical fittings joined to PEX pipe for temperatures up to 140 °F [60 °C] shall meet the applicable
requirements for materials and manufacture in applicable fitting standards, such as Specification F1055, Specification F3373, ISO
4427-3 and ISO 4427-5, PEX electrofusion fittings and mechanical fittings joined to PEX pipe for temperatures up to 200 °F
[93 °C] shall meet the applicable requirements for materials and manufacture in applicable fitting standards, such as ISO 15875-3
and ISO 15875-5.
4.4 Fittings containing metallic components and intended for sour gas service applications (> 50 ppm of H S) shall comply with
NACE MR0175.
4.5 Certification—PEX fittings used for the distribution of potable water shall be products approved for that service by the
regulatory bodies having such jurisdiction. These products shall be tested for that service by a nationally recognized and accredited
testing laboratory and shall bear the certification mark of the testing agency.
5. Classification
5.1 Fittings—This specification classifies fittings intended for use in systems with PEX pipe, by a maximum continuous use
temperature that shall be 200 °F [93 °C] or 140 °F (60 °C)[60 °C] for potable water, and by inch pipe sizes from NPS 3 to NPS
54 and metric pipe sizes from DN 16 to 1000 on the basis of meeting the performance requirements for fittings as outlined in
Specification F1055, Specification F3373, ISO 4427-3 and ISO 15875-3. Fittings shall be compatible with pipe made to the
requirements of Specifications F2788F2788/F2788M, F2905/F2905M, F2968/F2968M.
5.2 PE electrofusion fittings (Specification F1055, Specification F3373 or ISO 4427-3) shall only be used for temperatures up to
140 °F [60 °C]. PEX electrofusion fittings (ISO 15875-3) may be used for temperatures up to 200 °F [93 °C].
6. Requirements
6.1 Dimensions and Tolerances:
6.1.1 The dimensions and tolerances of PE electrofusion and mechanical fittings used up to140°F [60°C] to 140 °F [60 °C] shall
meet the specific requirements contained in Specification F1055, Specification F3373, and ISO 4427–3. The dimensions and
tolerances of PEX electrofusion fittings and mechanical fittings for temperatures up to 200 °F [93 °C] shall meet the specific
requirements contained in ISO 15875-3. Fittings shall be compatible with pipe made to the requirements of Specification
F2788F2788/F2788M, F2905/F2905M, or F2968/F2968M.
6.2 Electrofusion Joints—All electrofusion joints shall meet all the performance requirements as specified in Specification F1055,
Specification F3373, ISO 4427-3, and ISO 4427-5 for temperatures up to 140 °F [60 °C], or ISO 15875-3 and ISO 15875-5 for
temperatures up to 200 °F [93 °C]. Performance tests for electrofusion joints between PEX pipe and PE electrofusion fittings shall
F2829/F2829M − 21
follow the relevant standard to which the EF fitting complies, either Specification F1055, Specification F3373, or ISO 4427-3. The
following are examples of the performance requirements are as described in these ASTM and ISO standards for electrofusion
fittings – 68 °F [20 °C] or 73 °F [23 °C] hydrostatic strength, 176 °F [80 °C] hydrostatic strength, short-term internal pressure
resistance, resistance to tensile loads, cohesive resistance for electrofusion saddle and socket fittings at both the minimum and
maximum recommended temperatures, impact resistance for saddle fittings.
6.3 Mechanical Joints—All mechanical fitting joints made between metric-sized PEX pipe and metric-sized mechanical fittings
shall meet the performance requirements as specified in ISO 4427-3 and ISO 4427-5 for temperatures up to 140 °F [60°C], or ISO
15875-3 and ISO 15875-5 for temperatures up to 200 °F [93 °C]. The following performance requirements are described in these
ISO standards for mechanical fittings – 68 °F [20 °C] hydrostatic strength, 176 °F [80 °C] hydrostatic strength, short-term internal
pressure resistance, resistance to tensile loads, impact resistance for saddle fittings, leak tightness under internal pressure, leak
tightness under internal pressure when subjected to bending, external pressure test, and resistance to pull out under constant
longitudinal force.
6.4 Fittings:
NOTE 3—Swaged fittings per 6.4.2 and fabricated fittings per 6.4.5 and 6.4.6 may not be allowed for gas distribution applications in some countries.
6.4.1 PEX Elbow—PEX pipe hot bent to produce a PEX elbow (also known as a sweep elbow) shall meet the performance
requirements of Specifications F2788F2788/F2788M, F2905/F2905M or F2968/F2968M, after the PEX pipe is bent to form a PEX
elbow. PEX elbows that do not meet minimum performance requirements for the PEX pipe from which they were made shall be
de-rated. The pressure rating marked on the PEX elbow shall be reduced to align with their lower performance test results. The
manufacturer shall also perform tests to confirm that the PEX elbow will not revert back to its original shape after the hot bend
process.
6.4.2 PEX Reducer—PEX pipe that is swaged to produce a PEX reducer shall meet the performance requirements of Specifications
F2788F2788/F2788M, F2905/F2905M or F2968/F2968M, after the PEX pipe is swaged to form a PEX reducer. PEX reducers that
do not meet minimum performance requirements for the PEX pipe from which they were made shall be de-rated. The pressure
rating marked on the PEX reducer shall be reduced to align with their lower performance test results. The manufacturer shall also
perform tests to confirm that the PEX reducer will not revert back to its original shape after the swage process.
6.4.3 Reinforced Electrofusion Coupler—coupler shall be reinforced (metal, glass fibers, polymers, etc) for use with thick wall
PEX pipe, and tested according to the manufacturer’s recommendations to assure they meet the performance requirements of this
specification.
6.4.4 Flange Coupler—coupler shall be manufactured and tested according to the manufacturer’s recommendations, and shall
meet the same performance requirements specified for mechanical joints in this standard. Flanges shall have a back-up ring for
tightening,
...