ASTM F2769-09
(Specification)Standard Specification for Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems
Standard Specification for Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems
ABSTRACT
This specification covers the requirements for polyethylene of raised temperature (PE-RT) plastic hot- and cold-water tubing and distribution systems components made in one standard dimension ratio and intended for specified water service pressures and maximum working temperatures. The components covered here are comprised of tubing, fittings, valves, and manifolds intended for use in residential and commercial, hot and cold, potable water distribution systems. The polyethylene used to make tubing shall be virgin plastic and/or reworked plastic, while fittings shall be made from materials that are generally regarded as corrosion resistant. Sampled specimens shall be tested for conformance with workmanship, dimension (out-of-roundness, outside diameter, and wall thickness), burst pressure, sustained pressure, oxidative stability in potable chlorinated water, thermocycling, bend strength, excessive temperature-pressure capacity, environmental stress cracking, adhesion, and slow crack growth resistance requirements.
SCOPE
1.1 This specification establishes requirements for polyethylene of raised temperature (PE-RT) plastic hot- and cold-water tubing and distribution systems components made in one standard dimension ratio and intended for 100 psig (6.9 bar) water service up to and including a maximum working temperature of 180°F (82°C). Components are comprised of tubing, fittings, valves and manifolds. Tubing may incorporate an optional polymeric inner, middle or outer layer. Testing of Specification F 1807 and F 2159 fittings and PE-RT tubing to the requirements of this standard indicate that these fittings are appropriate for use with PE-RT piping systems. Requirements and test methods are included for materials, workmanship, dimensions and tolerances, burst pressure, sustained pressure, oxidative resistance, temperature cycling tests, bend strength and environmental stress cracking. Also included are tests related to system malfunctions. The components covered by this specification are intended for use in residential and commercial, hot and cold, potable water distribution systems.
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.
Note 1—Suggested hydrostatic design stresses and hydrostatic pressure ratings for tubing and fittings are listed in Appendix X1. UV labeling guidelines are provided in Appendix X2. Design, assembly, and installation considerations are provided in Appendix X3. An optional performance qualification and an in-plant quality control program are recommended in Appendix X4.
1.3 Units—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 The following safety hazards caveat pertains only to the test methods 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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: F2769 – 09
Standard Specification for
Polyethylene of Raised Temperature (PE-RT) Plastic Hot and
Cold-Water Tubing and Distribution Systems
This standard is issued under the fixed designation F2769; 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 of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
1.1 This specification establishes requirements for polyeth-
tions prior to use.
ylene of raised temperature (PE-RT) plastic hot- and cold-
water tubing and distribution systems components made in one
2. Referenced Documents
standard dimension ratio and intended for 100 psig (6.9 bar)
2.1 ASTM Standards:
water service up to and including a maximum working
D618 Practice for Conditioning Plastics for Testing
temperature of 180°F (82°C). Components are comprised of
D1598 Test Method for Time-to-Failure of Plastic Pipe
tubing, fittings, valves and manifolds. Tubing may incorporate
Under Constant Internal Pressure
an optional polymeric inner, middle or outer layer. Testing of
D1599 TestMethodforResistancetoShort-TimeHydraulic
Specification F1807 and F2159 fittings and PE-RT tubing to
Pressure of Plastic Pipe, Tubing, and Fittings
the requirements of this standard indicate that these fittings are
D1600 Terminology for Abbreviated Terms Relating to
appropriate for use with PE-RT piping systems. Requirements
Plastics
and test methods are included for materials, workmanship,
D1898 Standard Practice for Sampling of Plastics
dimensions and tolerances, burst pressure, sustained pressure,
D2122 Test Method for Determining Dimensions of Ther-
oxidative resistance, temperature cycling tests, bend strength
moplastic Pipe and Fittings
and environmental stress cracking. Also included are tests
D2749 Symbols for Dimensions of Plastic Pipe Fittings
related to system malfunctions. The components covered by
D2837 TestMethodforObtainingHydrostaticDesignBasis
this specification are intended for use in residential and
forThermoplastic Pipe Materials or Pressure Design Basis
commercial, hot and cold, potable water distribution systems.
for Thermoplastic Pipe Products
1.2 Thetextofthisspecificationreferencesnotes,footnotes,
D3350 Specification for Polyethylene Plastics Pipe and
and appendixes which provide explanatory material. These
Fittings Materials
notesandfootnotes(excludingthoseintablesandfigures)shall
D3895 Test Method for Oxidative-Induction Time of Poly-
not be considered as requirements of the specification.
olefins by Differential Scanning Calorimetry
NOTE 1—Suggested hydrostatic design stresses and hydrostatic pres-
F412 Terminology Relating to Plastic Piping Systems
sure ratings for tubing and fittings are listed inAppendix X1. UV labeling
F1282 Specification for Polyethylene/Aluminum/
guidelines are provided in Appendix X2. Design, assembly, and installa-
Polyethylene (PE-AL-PE) Composite Pressure Pipe
tion considerations are provided in Appendix X3. An optional perfor-
F1473 Test Method for Notch Tensile Test to Measure the
mance qualification and an in-plant quality control program are recom-
Resistance to Slow Crack Growth of Polyethylene Pipes
mended in Appendix X4.
and Resins
1.3 Units—The values stated in inch-pound units are to be
F1807 Specification for Metal Insert Fittings Utilizing a
regarded as standard. The values given in parentheses are
Copper Crimp Ring for SDR9 Cross-linked Polyethylene
mathematical conversions to SI units that are provided for
(PEX) Tubing
information only and are not considered standard.
F2023 Test Method for Evaluating the Oxidative Resistance
1.4 The following safety hazards caveat pertains only to the
of Crosslinked Polyethylene (PEX) Tubing and Systems to
test methods portion, Section 7, of this specification.This
Hot Chlorinated Water
standard does not purport to address all of the safety concerns,
F2159 Specification for Plastic Insert Fittings Utilizing a
if any, associated with its use. It is the responsibility of the user
Copper Crimp Ring for SDR9 Cross-linked Polyethylene
(PEX) Tubing
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.26 on Olefin For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Based Pipe. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved June 15, 2009. PublishedAugust 2009. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
F2769-09. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
F2769 – 09
2.2 ANSI Standard: 3.3 Definitions of Terms Specific to This Standard:
B36.10 Standards Dimensions of Steel Pipe (NTS) 3.4 hydrostatic design stress (HDS), n—theestimatedmaxi-
Z 17.1 Preferred Numbers mum tensile stress the material is capable of withstanding
2.3 Federal Standard: continuously with a high degree of certainty that failure of the
FED-STD-123 Marking for Shipment (Civil Agencies) tube will not occur.This stress is circumferential when internal
2.4 Military Standard: hydrostatic water pressure is applied. For materials with
MIL-STD-129 Marking for Shipment and Storage Hydrostatic Strength Classification 3 or 4 per Specification
2.5 PPI Standards: D3350,theHDSisequaltothehydrostaticdesignbasis(HDB)
PPI TR-3 Policies and Procedures for Developing Hydro- times the design factor (DF) for water. For this standard, the
static Design Basis (HDB), Hydrostatic Design Stresses design factor is equal to 0.5.
(HDS), Pressure Design Basis (PDB), Strength Design
HDS 5 HDB 3 DF
Basis (SDB), and Minimum Required Strength (MRS)
Ratings for Thermoplastic Piping Materials or Pipe 5 HDB 3 0.5 ~for this standard!
PPI TR-4 PPI Listing of Hydrostatic Design Basis (HDB),
3.5 relation between dimensions, hydrostatic design stress,
Strength Design Basis (SDB), Pressure Design Basis
and pressure rating, n—the following expression, commonly
(PDB) and Minimum Required Strength (MRS) Ratings
known as the ISO equation , is used in this specification to
for Thermoplastic Piping Materials or Pipe
relate dimensions, hydrostatic design stress, and pressure
2.6 NSF Standards:
rating:
NSF 14 Standard No. 14 for Plastic Piping Components and
2HDS/P 5 ~D / t! 2 1
o
Related Materials
or (1)
NSF 61 Drinking Water System Components – Health
2HDS/P5R–1
Effects
2.7 ISO Standard:
where:
ISO 13760 : Plastics pipes for the conveyance of fluids
HDS = hydrostatic design stress, psi (or MPa),
under pressure -- Miner’s rule -- Calculation method for
P = pressure rating, psig (or MPa),
cumulative damage
DO = average outside diameter, in. (or mm),
t = minimum wall thickness, in. (or mm), and
3. Terminology
R = standard dimension ratio, SDR.
3.1 Terminology used in this standard is in accordance with
3.6 standard thermoplastic material designated code,
Terminologies F412, D1600, and D2749 unless otherwise
n—the pipe material designation code shall consist of the
specified.The abbreviation for polyethylene of raised tempera-
abbreviation for the type of plastic (PE) followed by Arabic
ture is PE-RT. Plastic tubing denotes a particular diameter
numerals which describe the short term properties in accor-
scheduleofplasticpipeinwhichoutsidediameterofthetubing
dance with Specification D3350, the hydrostatic design stress
is equal to the nominal size plus ⁄8 in. Plastic pipe outside
for water at 73°F (23°C) in units of 100 psi with any decimal
diameter schedule conforms to ANSI B36.10.
figures dropped. Where the hydrostatic design stress code
3.2 standard dimension ratio (SDR), n—a specific ratio of
containslessthantwofigures,azeroisusedbeforethenumber.
the average specified outside diameter to the minimum speci-
3.6.1 Discussion—Further information regarding testing
fied wall thickness (D /t) for outside diameter-controlled plas-
0 and approval can be obtained from the National Sanitation
tic pipe, the value of which is derived by adding one to the
Foundation or other accredited laboratory.
pertinent number selected from the ANSI Preferred Number
4. Classification
Series 10. F412
3.2.1 Discussion—For PE-RT-tubing, it is calculated by
4.1 Tubing—This specification covers one PE-RT tubing
dividingtheaverageoutsidediameterofthetubingininchesor
material in one standard dimension ratio, 9.0, and by a
in millimeters by the minimum wall thickness in inches or
maximum continuous use temperature that shall be 180°F
millimeters. If the wall thickness calculated by this formula is
(82°C), and by nominal tubing sizes from ⁄8 through 6 in. 4.2
less than 0.070 in. (1.78 mm) it shall be arbitrarily increased to
4.2 Fittings—This specification classifies fittings, including
0.070 in. except for sizes ⁄16 in. and smaller. The SDR values
manifolds, intended for use in systems with PE-RT tubing, by
shall be rounded to the nearest 0.5
a maximum continuous use temperature that shall be 180°F
(82°C) and by nominal sizes from ⁄8 in. through 6 in. on the
3 basis of resistance to burst pressure, hydrostatic sustained
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. pressure, excessive temperature and pressure, and thermocy-
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
cling.
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil.
5. Materials
Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825,
5.1 General—The polyethylene used to make tubing shall
Irving, TX 75062, http://www.plasticpipe.org.
Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd.,Ann
be virgin plastic and/or reworked plastic, as specified in 5.4,
Arbor, MI 48113-0140, http://www.nsf.org.
that meets the requirements of this standard and shall have a
Available from International Organization for Standardization (ISO), 1, ch. de
Plastic Pipe Institute (PPI) rating at 73°F (23°C) and 180°F
la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
www.iso.ch. (82°C°C). Fitting, manifold and valve materials shall meet the
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
F2769 – 09
TABLE 2 Pressure Ratings for PE-RT SDR 9 Tubing for Water
applicable requirements as described in Specifications F1807
or F2159. Fittings shall be made from materials that are Rated Minimum Hydrostatic Minimum Pressure
Temperature Design Stress Rating for Water
generally regarded as corrosion resistant.
°F (°C) psi (MPa) psi (bar)
5.2 Basic Tubing Materials—PE-RT tubing meeting the
73.4 (23) 640 (4.41) 160 (11.0)
requirements of this specification are primarily defined by two
180 (82.2) 400 (2.76) 100 (6.90)
criteria namely, basic short-term properties, 5.2.1, and long-
term hydrostatic properties, 5.2.2.
5.2.1 Basic Short-Term Properties—This specification cov-
6. Requirements
ers tubing materials meeting the following requirements:
6.1 Workmanship—The tubing shall be homogeneous
5.2.1.1 Classification—Polyethylene materials suitable for
throughout and free of visible cracks, holes, foreign inclusions,
use in the manufacture of tubing under this specification shall
or other defects. The tubing shall be as uniform as commer-
be classified in accordance with Specification D3350 as shown
cially practicable in color, opacity, density, and other physical
in Table 1.
properties. For tubing that incorporates a barrier layer per 5.3
5.2.2 Long-Term Hydrostatic Strength—This specification
each layer shall meet the workmanship requirements per this
covers PE-RT tubing which is further defined on the basis of
section.
long-term hydrostatic strength tests (Appendix X1). The ma-
6.2 Dimensions and Tolerances:
terial shall have a minimum pressure rating as per Table 2.
6.2.1 Compliance with this specification requires that fit-
5.3 Barrier Layers—PE-RT tubing may incorporate an
tings contained in Specifications F1807 and F2159 must meet
optional interior wall, mid wall or outer wall layer or a
the Performance and Test Method requirements of this stan-
combination of such layers of non-PE-RT material for the
dard.
express purpose of providing gas barrier properties to the pipe.
6.2.2 Outside Diameters of Tubing—The outside diameters
The tubing shall meet the minimum wall thickness require-
and tolerances of the tubing including the layers shall be as
ments of this standard without using the barrier layer thickness
shown in Table 3, when measured in accordance with 7.4 and
in the determinations. PE-RTtubing with a barrier layer within
7.4.1.
the wall of the tubing (neither exterior layer nor interior layer)
6.2.3 Wall Thickness of Tubing—The wall thickness and
shall demonstrate a hydrostatic design stress (HDS) rating
tolerances shall be as shown in Table 4, when measured in
equivalent to that of PE-RTtubing without a barrier layer.This
accordance with 7.4 and 7.4.2.
determinationshallbemadeinaccordancewithpoliciesnoless
6.2.3.1 Layer—Tubing that incorporates an inner, middle or
restrictive than those of the PPI TR-3 and meet the require-
outer layer shall meet the minimum wall thickness and
ments of this standard.
tolerances requirements as specified inTable 4. In addition, the
5.4 Rework Material—Clean rework material of the same
layer shall not result in the reduction of the total PE-RT
commercial designation, generated from the manufacturer’s
material below that specified in Table 4. In the case of tubing
own tubing production shall not be used unless the tubing
with a middle layer, the total base PE-RT material wall
producedmeetalltherequirementsofthisspecification.PE-RT
thickness shall be the sum of the inner and outer base PE-RT
tubing with a barrier layer shall not be used for rework
material wall thicknesses.
material.
6.2.4 Out-of-Roundness— The maximum out-of-roundness
5.5 Tubing Material Designation—The tubing meeting the
requirements shown in Table 3 for tubing, apply to the average
requirements of this specification shall be designated PE-RT.
measured diameter after rounding with a rounding tool recom-
5.6 Certifica
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