ASTM F3253-17
(Specification)Standard Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic Distribution Systems
Standard Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic Distribution Systems
SCOPE
1.1 This specification covers requirements, test methods, and marking requirements for crosslinked polyethylene (PEX) tubing with a polymeric oxygen barrier layer, made in one standard dimension ratio (SDR 9), and distribution system components intended for hydronic heating and cooling applications up to and including a maximum working temperature of 200°F (93°C).
1.1.1 Components are comprised of tubing, fittings, valves, and manifolds. Tubing made to this specification incorporates a single outer or middle wall oxygen barrier layer intended for inhibiting the transmission or permeation of oxygen through the tubing wall. Requirements and test methods are included for materials, workmanship, tubing dimensions and tolerances, burst pressure, sustained pressure, excessive temperature and pressure, thermo-cycling, bent tube, oxidative resistance, layer adhesion, UV resistance, oxygen permeation, and fitting pull-out strength tests. The components covered by this specification are intended for use in residential and commercial hydronic heating and cooling systems. Requirements for potable water applications are outside the scope of this specification.
1.2 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.
1.3 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.
1.4 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.
1.5 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.
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Designation:F3253 −17 An American National Standard
Standard Specification for
Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier
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for Hot- and Cold-Water Hydronic Distribution Systems
This standard is issued under the fixed designation F3253; 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 Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
1.1 This specification covers requirements, test methods,
Barriers to Trade (TBT) Committee.
and marking requirements for crosslinked polyethylene (PEX)
tubing with a polymeric oxygen barrier layer, made in one
2. Referenced Documents
standard dimension ratio (SDR 9), and distribution system
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2.1 ASTM Standards:
components intended for hydronic heating and cooling appli-
D618 Practice for Conditioning Plastics for Testing
cations up to and including a maximum working temperature
D792 Test Methods for Density and Specific Gravity (Rela-
of 200°F (93°C).
tive Density) of Plastics by Displacement
1.1.1 Components are comprised of tubing, fittings, valves,
D1505 Test Method for Density of Plastics by the Density-
and manifolds. Tubing made to this specification incorporates
Gradient Technique
a single outer or middle wall oxygen barrier layer intended for
D1598 Test Method for Time-to-Failure of Plastic Pipe
inhibiting the transmission or permeation of oxygen through
Under Constant Internal Pressure
the tubing wall. Requirements and test methods are included
D1599 Test Method for Resistance to Short-Time Hydraulic
for materials, workmanship, tubing dimensions and tolerances,
Pressure of Plastic Pipe, Tubing, and Fittings
burst pressure, sustained pressure, excessive temperature and
D1600 TerminologyforAbbreviatedTermsRelatingtoPlas-
pressure, thermo-cycling, bent tube, oxidative resistance, layer
tics
adhesion, UV resistance, oxygen permeation, and fitting pull-
D2122 Test Method for Determining Dimensions of Ther-
out strength tests. The components covered by this specifica-
moplastic Pipe and Fittings
tion are intended for use in residential and commercial hy-
D2749 Symbols for Dimensions of Plastic Pipe Fittings
dronic heating and cooling systems. Requirements for potable
D2765 Test Methods for Determination of Gel Content and
water applications are outside the scope of this specification.
Swell Ratio of Crosslinked Ethylene Plastics
1.2 Thetextofthisspecificationreferencesnotes,footnotes,
D2837 Test Method for Obtaining Hydrostatic Design Basis
and appendixes which provide explanatory material. These
forThermoplasticPipeMaterialsorPressureDesignBasis
notesandfootnotes(excludingthoseintablesandfigures)shall
for Thermoplastic Pipe Products
not be considered as requirements of the specification.
F412 Terminology Relating to Plastic Piping Systems
1.3 The values stated in inch-pound units are to be regarded
F876 SpecificationforCrosslinkedPolyethylene(PEX)Tub-
as standard. The values given in parentheses are mathematical
ing
conversions to SI units that are provided for information only
F877 SpecificationforCrosslinkedPolyethylene(PEX)Hot-
and are not considered standard.
and Cold-Water Distribution Systems
F1281 Specification for Crosslinked Polyethylene/
1.4 This standard does not purport to address all of the
Aluminum/Crosslinked Polyethylene (PEX-AL-PEX)
safety concerns, if any, associated with its use. It is the
Pressure Pipe
responsibility of the user of this standard to establish appro-
F1588 Test Method for Constant Tensile Load Joint Test
priate safety, health, and environmental practices and deter-
(CTLJT)
mine the applicability of regulatory limitations prior to use.
F1960 Specification for Cold Expansion Fittings with PEX
1.5 This international standard was developed in accor-
ReinforcingRingsforUsewithCross-linkedPolyethylene
dance with internationally recognized principles on standard-
(PEX) Tubing
ization established in the Decision on Principles for the
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This specification is under the jurisdiction ofASTM Committee F17 on Plastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Piping Systems and is the direct responsibility of Subcommittee F17.61 on Water. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Dec. 1, 2017. Published February 2018. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
F3253–17 the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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