ASTM F2623-24e1

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.
´1
Designation: F2623 − 24 An American National Standard
Standard Specification for
Polyethylene of Raised Temperature (PE-RT) Systems for
Non-Potable Water Applications
This standard is issued under the fixed designation F2623; 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.
ε NOTE—Sections 9.1.7 and 9.1.8 were editorially corrected in March 2024.
1. Scope* of this standard to establish appropriate safety, health, and
environmental practices and determine the applicability of
1.1 This specification establishes requirements for polyeth-
regulatory limitations prior to use.
ylene of raised temperature (PE-RT) systems for non-potable
1.6 This international standard was developed in accor-
water applications. System components include PE-RT SDR 9
dance with internationally recognized principles on standard-
tubing, manifolds, fittings, valves and other appurtenances, and
ization established in the Decision on Principles for the
mechanical and fusion joining. PE-RT tubing is pressure rated
Development of International Standards, Guides and Recom-
for water at 73 °F (23 °C) and 180 °F (82 °C), and optionally
mendations issued by the World Trade Organization Technical
140 °F (60 °C). Included are requirements for materials,
Barriers to Trade (TBT) Committee.
workmanship, dimensions and tolerances, product tests, and
markings, and an optional barrier layer. Fittings include me-
2. Referenced Documents
chanical insert fittings and fusion fittings.
2.1 ASTM Standards:
1.2 The text of this specification references notes, footnotes,
D618 Practice for Conditioning Plastics for Testing
and appendixes which provide explanatory material. These
D1435 Practice for Outdoor Weathering of Plastics
notes and footnotes (excluding those in tables and figures) shall
D1598 Test Method for Time-to-Failure of Plastic Pipe
not be considered as requirements of the specification.
Under Constant Internal Pressure
1.3 The values stated in inch-pound units are to be regarded D1599 Test Method for Resistance to Short-Time Hydraulic
as standard. The values given in parentheses are mathematical Pressure of Plastic Pipe, Tubing, and Fittings
conversions to SI units that are provided for information only D1600 Terminology for Abbreviated Terms Relating to Plas-
and are not considered standard. tics (Withdrawn 2024)
1.3.1 Values in parentheses are appropriately rounded for D2122 Test Method for Determining Dimensions of Ther-
accuracy and precision and are not exact equivalents. moplastic Pipe and Fittings
D2565 Practice for Xenon-Arc Exposure of Plastics In-
1.4 The tubing systems produced under this specification
tended for Outdoor Applications
are intended for use in the transport of non-potable water such
D2683 Specification for Socket-Type Polyethylene Fittings
as hydronic and irrigation systems.
for Outside Diameter-Controlled Polyethylene Pipe and
1.4.1 PE-RT tubing containing an outside surface or mid-
Tubing
wall gas barrier layer or both is acceptable.
D2837 Test Method for Obtaining Hydrostatic Design Basis
1.4.2 PE-RT systems under this standard are not intended
for Thermoplastic Pipe Materials or Pressure Design Basis
for use in the transport of potable water. See Specification
for Thermoplastic Pipe Products
F2769 for PE-RT potable water distribution systems.
D3261 Specification for Butt Heat Fusion Polyethylene (PE)
1.5 The following safety hazards caveat pertains only to the
Plastic Fittings for Polyethylene (PE) Plastic Pipe and
test methods portion, Section 7, of this specification. This
Tubing
standard does not purport to address all of the safety concerns,
D3350 Specification for Polyethylene Plastics Pipe and Fit-
if any, associated with its use. It is the responsibility of the user
tings Materials
1 2
This specification is under the jurisdiction of ASTM 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 F17.26 on Olefin contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Based Pipe. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Feb. 1, 2024. Published February 2024. Originally the ASTM website.
approved in 2007. Last previous edition approved in 2023 as F2623–23. DOI: The last approved version of this historical standard is referenced on
10.1520/F2623-24E01. www.astm.org.
*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
´1
F2623 − 24
D3895 Test Method for Oxidative-Induction Time of Poly- (PDB) and Minimum Required Strength (MRS) Ratings
olefins by Differential Scanning Calorimetry for Thermoplastic Piping Materials or Pipe
F412 Terminology Relating to Plastic Piping Systems
2.6 ISO Standard:
F1055 Specification for Electrofusion Type Polyethylene
ISO 16871 Plastics piping and ducting systems—Plastics
Fittings for Outside Diameter Controlled Polyethylene
pipes and fittings—Method for exposure to direct (natural)
and Crosslinked Polyethylene (PEX) Pipe and Tubing
weathering
F1281 Specification for Crosslinked Polyethylene/
ISO 17455 - Plastics piping systems — Multilayer pipes —
Aluminum/Crosslinked Polyethylene (PEX-AL-PEX)
Determination of the oxygen permeability of the barrier
Pressure Pipe
pipe
F1282 Specification for Polyethylene/Aluminum/
Polyethylene (PE-AL-PE) Composite Pressure Pipe 3. Terminology
F1290 Practice for Electrofusion Joining Polyolefin Pipe and
3.1 Definitions—Definitions are in accordance with Termi-
Fittings
nology F412, and abbreviations are in accordance with Termi-
F1807 Specification for Metal Insert Fittings Utilizing a
nology D1600, unless otherwise specified. The abbreviation for
Copper Crimp Ring, or Alternate Stainless Steel Clamps,
polyethylene of raised temperature is PE-RT. Plastic tubing
for SDR9 Cross-linked Polyethylene (PEX) Tubing and
denotes a particular diameter schedule of plastic pipe in which
SDR9 Polyethylene of Raised Temperature (PE-RT) Tub-
the outside diameter conforms to ANSI B36.10.
ing
3.2 Definitions of Terms Specific to This Standard:
F2080 Specification for Cold-Expansion Fittings with Metal
3.2.1 barrier layer, n—a very thin polymeric film within the
Compression-Sleeves for Crosslinked Polyethylene (PEX)
tube wall or around the circumference of the tubing which
Pipe and SDR9 Polyethylene of Raised Temperature
provides a means for greatly reducing the transmission of
(PE-RT) Pipe
oxygen from the atmosphere and into the fluid within the tube.
F2159 Specification for Plastic Insert Fittings Utilizing a
Copper Crimp Ring, or Alternate Stainless Steel Clamps 3.2.2 fitting, n—an appurtenance such as coupling, elbow or
for SDR9 Crosslinked Polyethylene (PEX) Tubing and tee used to connect tubing or as an accessory to tubing.
SDR9 Polyethylene of Raised Temperature (PE-RT) Tub-
3.2.3 hydrostatic design stress (HDS)—the estimated maxi-
ing
mum tensile stress the material is capable of withstanding
F2620 Practice for Heat Fusion Joining of Polyethylene Pipe
continuously with a high degree of certainty that failure of the
and Fittings
tube will not occur. This stress is circumferential when internal
F2735 Specification for Plastic Insert Fittings For SDR9
hydrostatic water pressure is applied.
Cross-linked Polyethylene (PEX) and Polyethylene of
3.2.4 manifold, n—an appurtenance that has at least one
Raised Temperature (PE-RT) Tubing
inlet and multiple outlets.
F2769 Specification for Polyethylene of Raised Temperature
3.2.5 pressure rating (PR)—the estimated maximum water
(PE-RT) Plastic Hot and Cold-Water Tubing and Distri-
pressure the tube is capable of withstanding continuously with
bution Systems
a high degree of certainty that failure of the tube will not occur.
G155 Practice for Operating Xenon Arc Lamp Apparatus for
Exposure of Materials
3.2.6 relation between dimensions, hydrostatic design
stress, and pressure rating—the following expression, com-
2.2 ANSI Standard:
monly known as the ISO equation, is used in this specification
B36.10 Standards Dimensions of Steel Pipe (NTS)
to relate dimensions, hydrostatic design stress, and pressure
2.3 Federal Standard:
5 rating:
FED-STD-123 Marking for Shipment (Civil Agencies)
2S/P 5 ~D /t! 2 1 (1)
O
2.4 Military Standard:
MIL-STD-129 Marking for Shipment and Storage
or
2.5 PPI Standard:
2S/P 5 R 2 1
PPI TR-3 Policies and Procedures for Developing Hydro-
static Design Basis (HDB), Pressure Design Basis (PDB),
where:
Strength Design Basis (SDB), and Minimum Required
S = hydrostatic design stress, psi (or MPa) = Hydrostatic
Strength (MRS) Ratings for Thermoplastic Piping Mate-
Design Basis × 0.63,
rials or Pipe
P = pressure rating, psi (or MPa),
PPI TR-4 PPI Listing of Hydrostatic Design Basis (HDB),
D = average outside diameter, in. (or mm),
O
Strength Design Basis (SDB), Pressure Design Basis
t = wall thickness, in. (or mm), and
R = standard dimension ratio, SDR.
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org.
5 7
Available from DLA Document Services, Building 4/D, 700 Robbins Ave., Available from International Organization for Standardization (ISO), ISO
Philadelphia, PA 19111-5094, http://quicksearch.dla.mil. Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
Available from Plastics Pipe Institute (PPI), 105 Decker Court, Suite 825, Geneva, Switzerland, http://www.iso.org.
Irving, TX 75062, http://www.plasticpipe.org. ISO 161-1.
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F2623 − 24
3.2.7 standard dimension ratio (SDR)—the ratio of outside Higher Design Factor in PPI TR-3, and shall have a 73 °F
diameter to wall thickness. For PE-RT-tubing, it is calculated (23 °C) hydrostatic design stress (HDS) rating of 800 psi (5.52
by dividing the average outside diameter of the tubing in inches MPa).
or in millimeters by the minimum wall thickness in inches or 5.1.1.3 Polyethylene compound shall comply with Specifi-
millimeters. If the wall thickness calculated by this formula is cation D3350 cell classification requirements in accordance
less than 0.070 in. (1.78 mm) it shall be arbitrarily increased to with Table 2.
0.070 in. except for sizes NTS ⁄8 and smaller. The SDR values 5.1.1.4 Polyethylene compound shall comply with Specifi-
shall be rounded to the nearest 0.5. cation D3350 requirements for thermal stability, brittleness
temperature and tensile elongation at break.
3.2.8 standard thermoplastic material designated code—the
5.1.2 Barrier Layer—It is optional and acceptable for
pipe material designation code shall consist of the abbreviation
PE-RT tubing to incorporate a gas barrier layer in the mid-wall
for the type of plastic (PE) followed by Arabic numerals which
or outer wall or both, of non-PE-RT material for the purpose of
describe the short term properties in accordance with Specifi-
reducing gas transmission through the tubing wall. A barrier
cation D3350, the hydrostatic design stress for water at 73 °F
layer incorporating a material to bond between PE-RT material
(23 °C) in units of 100 psi with any decimal figures dropped.
and gas barrier layer material shall be acceptable.
Where the hydrostatic design stress code contains less than two
5.1.2.1 The material used for an optional oxygen barrier
figures, a zero is used before the number.
layer shall be ethylene-vinyl alcohol copolymer (EVOH).
3.2.9 system components, n—fittings and manifolds.
NOTE 1—Gas barrier layer material and bonding material if used, do not
contribute to the internal pressure capacity of PE-RT tubing.
4. Classification
5.1.2.2 The EVOH material selected shall result in multi-
4.1 Tubing—This specification covers PE-RT tubing in one
layer tubing that meets the adhesion and permeation require-
standard dimension ratio, 9.0, and nominal tubing sizes from
ments specified in A1.3.
NTS ⁄8 through NTS 6 having pressure ratings based on water
at 73 °F (23 °C) and 180 °F (82 °C) and optionally at 140 °F
5.2 Rework Material—Clean PE-RT material that complied
(60 °C), with a maximum continuous use temperature of with 5.1.1 through 5.1.1.4 when originally manufactured by the
180 °F (82 °C). The pressure ratings decrease as the tempera-
same manufacturer shall be acceptable as rework material
ture is increased and is uniform for all nominal tubing sizes. when blended with new PE-RT compound that complies with
5.1.1 through 5.1.1.4. Rework material shall not contain barrier
4.2 System Components—This specification covers system
layer materials.
components, such as fittings and manifolds, for use in systems
5.2.1 PE-RT tubing containing rework material and system
with PE-RT tubing on the basis of the requirements of this
components containing rework material shall meet the require-
specification.
ments of this specification.
4.3 Standard Thermoplastic Pipe Dimension Ratio (SDR)
5.3 Fittings—Fitting materials shall meet the applicable
—This specification covers PE-RT tubing in one standard
material requirements of at least one of the Specifications
dimension ratio (SDR 9) and nominal tubing sizes (NTS) from
D2683, D3261, F1055, F1807, F2080, F2159, or F2735.
⁄8 in. through 6 in. with a maximum continuous use tempera-
Polyethylene material used in fusion fittings shall meet the
ture that shall be 180 °F (82.2 °C). The pressure ratings are
requirements of 5.1.1 through 5.1.1.4.
uniform for all nominal tubing sizes.
6. Requirements
5. Materials and Manufacture
6.1 Workmanship—The tubing and fittings shall be homo-
5.1 PE-RT Tubing:
geneous throughout and free of visible cracks, holes, foreign
5.1.1 The PE-RT compound used to make tubing shall have
inclusions, or other defects. The tubing shall be as uniform as
hydrostatic design basis (HDB) ratings at 73 °F (23 °C), 140 °F
commercially practicable in color, opacity, density, and other
(60 °C) and 180 °F (82 °C) in accordance with Table 1 that are
physical properties. The walls of fittings and manifolds shall be
determined in accordance PPI TR-3.
free of cracks, holes, blisters, voids, foreign inclusions, or other
5.1.1.1 Ratings at 140 °F (60 °C) that are interpolated in
defects that are visible to the naked eye and may affect fitting
accordance with PPI TR-3 shall be acceptable.
integrity. All sealing surfaces shall be smooth and free of
5.1.1.2 Polyethylene compound shall comply with Require-
foreign material.
ments For Polyethylene (PE) Materials To Qualify For A
TABLE 2 Required Specification D3350 Cell Classifications for
PE-RT
TABLE 1 Minimum Hydrostatic Design Basis at Different
Physical Required
Temperatures
Property Cell Classification
Rated Hydrostatic Density 2, 3, or 4
Temperature Design Basis Melt index 2, 3, 4, or 5
°F (°C) psi (MPa) Flexural modulus 3 or 4
73 (23) 1250 (8.62) Tensile strength 2 or 3
140 (60) 800 (5.52) Slow crack growth resistance 7
180 (82) 630 (4.34) Hydrostatic design basis 3 or 4
´1
F2623 − 24
TABLE 4 Wall Thickness and Tolerances for PE-RT
6.2 Dimensions and Tolerances:
A
SDR 9 Tubing
6.2.1 Outside Diameters of Tubing—The outside diameters
NTS,
and tolerances shall be as shown in Table 3, when measured in
Minimum Wall
Nominal Tolerance
Thickness
accordance with 7.4 and 7.4.1. Optional barrier layer(s) shall
Tubing
not increase the outside diameter beyond the Table 3 maximum
in. (mm) in. (mm)
B B
outside diameter. 1
⁄8 0.047 (1.19) +0.007 (+0.18)
B B
⁄4 0.062 (1.57) +0.010 (+0.25)
6.2.2 Wall Thickness of Tubing—The total wall thickness
⁄16 0.064 (1.63) +0.010 (+0.25)
and tolerances shall be as shown in Table 4, when measured in
B B
⁄8 0.070 (1.78) +0.010 (+0.25)
B B
accordance with 7.4 and 7.4.2. 1
⁄2 0.070 (1.78) +0.010 (+0.25)
⁄8 0.083 (2.12) +0.010 (+0.25)
6.2.2.1 Layers—PE-RT tubing that incorporates an EVOH
⁄4 0.097 (2.47) +0.010 (+0.25)
oxygen barrier layer for the purposes of reducing the transmis-
1 0.125 (3.18) +0.013 (+0.33)
sion rate of oxygen through the PE-RT wall and into the fluid
1 ⁄4 0.153 (3.88) +0.015 (+0.38)
1 ⁄2 0.181 (4.59) +0.019 (+0.48)
medium shall comply with the dimensional, performance and
2 0.236 (6.00) +0.024 (+0.61)
marking requirements in accordance with Annex A1.
2 ⁄2 0.292 (7.41) +0.030 (+0.76)
6.2.3 Dimensions of Fittings—The dimensions and toler-
3 0.347 (8.82) +0.033 (+0.84)
3 ⁄2 0.403 (10.23) +0.035 (+0.89)
ances of fittings shall meet the specific requirements contained
4 0.458 (11.64) +0.040 (+1.02)
in Specifications D2683, D3261, F1055, F1807, F2080, F2159,
4 ⁄2 0.514 (13.05) +0.045 (+1.14)
F2735, or other recognized specification.
5 0.569 (14.46) +0.050 (+1.27)
6 0.681 (17.29) +0.060 (+1.52)
6.3 Sustained Pressure—The tubing and system
A
The minimum is the lowest total wall thickness of PE-RT material in the tubing
components, assembled using the system component manufac-
wall at any cross section. The maximum permitted wall thickness, at any cross
turer’s instructions and tested as assemblies, shall not fail,
section, is the minimum wall thickness plus the stated tolerance. All tolerances are
on the plus side of the minimum requirement. The presence of optional barrier
balloon, burst, or weep as defined in Test Method D1598, at the
layer(s) shall not reduce the total thickness of PE-RT material in the tubing wall
test pressures given in Table 5 when tested in accordance with
below the minimum, nor above the maximum (maximum = minimum + tolerance).
B
7.5.
For tubing nominal sizes of ⁄2 and below, wall thickness minimums are not
functions of SDR.
6.4 Burst Pressure—The tubing and system components,
assembled using the system component manufacturer’s instruc-
tions and tested as assemblies, shall meet the minimum burst
pressures as given in Table 6 without failure, when determined described in Appendix X3 provided the following requirements
are met. Bent tubing, with a radius of 6 times the outside
in accordance with 7.6.
6.4.1 Manifolds—If the manifold has more than one con- diameter and consisting of a continuous bend length inducing
not less than 90° angle, shall meet the 180 °F (82 °C) minimum
nection size, the test pressure selected from Table 6 shall be
based on the largest nominal tubing connection. hydrostatic sustained pressure strength requirements shown in
Table 5 when tested in accordance with 7.8. The bend length
6.5 Oxidative Resistance—PE-RT tubing shall have a mini-
and bend angle is kept throughout the testing period by rigid
mum extrapolated time-to-failure of 50 years when tested and
secures immediately outside the bend. The minimum test
evaluated in accordance with 7.7.
duration shall be 1000 h without failure.
6.6 Bent Tube—PE-RT tubing, nominal sizes, up to and
NOTE 2—PE-RT tubing, nominal sizes larger than NTS 1, is typically
including NTS 1, can be installed bent by the technique installed as main distribution lines and is installed in straight runs. Fittings
TABLE 3 Outside Diameters and Tolerances for PE-RT Tubing
A
NTS, Nominal Tolerances for Average Diameter Out-of-Roundness
Average Outside Diameter
Tubing Size
in. (mm) in. (mm) in. (mm)
⁄8 0.250 (6.35) ±0.003 (±0.08) 0.008 (0.20)
⁄4 0.375 (9.52) ±0.003 (±0.08) 0.008 (0.20)
⁄16 0.430 (10.92) ±0.003 (±0.08) 0.008 (0.20)
⁄8 0.500 (12.70) ±0.003 (±0.08) 0.012 (0.32)
⁄2 0.625 (15.88) ±0.004 (±0.10) 0.016 (0.40)
⁄8 0.750 (19.05) ±0.004 (±0.10) 0.016 (0.40)
⁄4 0.875 (22.22) ±0.004 (±0.10) 0.016 (0.40)
1 1.125 (28.58) ±0.005 (±0.12) 0.020 (0.48)
1 ⁄4 1.375 (34.92) ±0.005 (±0.12) 0.020 (0.48)
1 ⁄2 1.625 (41.28) ±0.006 (±0.16) 0.024 (0.60)
2 2.125 (53.98) ±0.006 (±0.16) 0.030 (0.76)
2 ⁄2 2.625 (66.68) ±0.007 (±0.18) 0.038 (0.95)
3 3.125 (79.38) ±0.008 (±0.20) 0.045 (1.14)
3 ⁄2 3.625 (92.08) ±0.008 (±0.20) 0.046 (1.16)
4 4.125 (104.78) ±0.009 (±0.23) 0.052 (1.32)
4 ⁄2 4.625 (117.48) ±0.009 (±0.23) 0.059 (1.49)
5 5.125 (130.18) ±0.010 (±0.25) 0.065 (1.65)
6 6.125 (155.58) ±0.011 (±0.28) 0.072 (1.83)
A
The Out-of-Roundness specification applies only to tubing prior to coiling.
´1
F2623 − 24
TABLE 5 Minimum Sustained Water Pressure Test Condition for will compromise butt fusion joining. Exposure of the mid-wall barrier
PE-RT SDR 9 Tubing and Systems
layer to the transported fluid may degrade barrier layer performance.
NTS, Pressure Required for Test,
6.8.2 Electrofusion:
A
Nominal psig (MPa)
6.8.2.1 Electrofusion joints between tubing and Specifica-
Tubing
tion F1055 fittings shall be made in accordance with Practice
Size
140 °F (60 °C) F1290 and the fitting manufacturer’s instructions.
73 °F (23°C) 180°F (82 °C)
(optional) (optional)
6.8.2.2 Qualification of the fitting with PE-RT tubing shall
⁄8 600 (4.14) 405 (2.79) 300 (2.07)
be performed in accordance with 6.3, 6.4, and Specification
⁄4 515 (3.55) 350 (2.41) 260 (1.79)
F1055.
⁄16 455 (3.14) 310 (2.14) 230 (1.59)
⁄8 425 (2.93) 285 (1.97) 215 (1.48) 6.8.3 Socket Fusion:
⁄2 330 (2.28) 220 (1.52) 165 (1.14)
6.8.3.1 Socket fusion joints between tubing and Specifica-
⁄8 and 325 (2.24) 220 (1.52) 165 (1.14)
tion D2683 fittings shall be made in accordance with Practice
larger
F2620 and the fitting manufacturer’s instructions.
A
The fiber stresses used to derive these test pressures are:
6.8.3.2 Qualification of socket fusion fittings with PE-RT
at 73 °F (23 °C) 1300 psi (8.96 MPa)
at 140 °F (60 °C) 880 psi (6.07 MPa)
shall be performed in accordance with 6.3, 6.4 and the System
at 180 °F (82 °C) 650 psi (4.48 MPa)
Pressure Test requirements of Specification D2683.
6.8.4 Butt Fusion:
6.8.4.1 Butt fusion joints between tubing and Specification
TABLE 6 Burst Pressure Requirements for Water at Different
D3261 fittings shall be made in accordance with Practice
Temperatures for PE-RT SDR 9 Tubing and Systems
F2620 and the fitting manufacturer’s instructions.
NTS, Minimum Burst Pressures at
A
Nominal Different Temperatures, psig (MPa) 6.8.4.2 Qualification of butt fusion fittings with PE-RT shall
Tubing
be performed in accordance with 6.3, 6.4, and the System
Size
Pressure Test requirements of Specification D3261.
140 °F (60 °C)
73 °F (23 °C) 180 °F (82°C)
(optional) (optional)
6.9 Joints - Mechanical Insert:
⁄8 880 (6.07) 575 (3.96) 335 (2.31)
6.9.1 Mechanical insert fittings shall be installed in accor-
⁄4 755 (5.21) 490 (3.38) 285 (1.97)
dance with the fitting manufacturer’s installation instructions.
⁄16 665 (4.59) 435 (3.00) 250 (1.72)
3 6.9.2 Qualification of mechanical insert fittings with PE-RT
⁄8 620 (4.27) 405 (2.79) 235 (1.62)
⁄2 480 (3.31) 315 (2.17) 180 (1.24)
tubing shall be in accordance with 6.3, 6.4, and 6.9.3.
⁄8 and 475 (3.28) 310 (2.14) 180 (1.24)
6.9.3 Thermo-cycling—Tubing and mechanical insert joint
larger
system components, assembled using the system component
A
The fiber stresses used to derive these test pressures are:
manufacturer’s instructions, shall not leak after completion of
at 73 °F (23 °C) 1900 psi (13.10 MPa)
at 140 °F (60 °C) 1240 psi (8.55 MPa) 1000 cycles between the temperatures of 60 °F (16 °C) and
at 180 °F (82 °C) 720 psi (4.96 MPa)
180°F (82 °C) when tested in accordance with 7.7.
NOTE 4—Tests applicable to tubing and fittings assemblies are intended
to be performance qualification tests of joints and not tests required of
each fitting configuration.
are used when a change in direction of 90° or greater and a bend radius of
less than 6 times the outside diameter is needed. The test procedures in 6.6
7. Test Methods
are intended to evaluate PE-RT tubing installed in tight bend applications
in accordance with the procedure in Appendix X3. This application 7.1 Conditioning—Condition the specimens at 73 6 4 °F
applies to tubing up to and including nominal size 1 only.
(23 6 2 °C) and 50 6 10 % relative humidity for not less than
40 h prior to test in accordance with Procedure A of Practice
6.7 Adhesion Test—Tubing that incorporates an optional
D618, for those tests where conditioning is required. In cases
middle or outer layer shall not show any delamination when
of disagreement, the tolerances shall be 62 °F (61 °C) and
tested in accordance with the adhesion test of Specification
65 % relative humidity.
F1282.
7.2 Test Conditions—Conduct the test in the standard labo-
6.8 Joints – Fusion—Tubing fusion joining using Specifi-
ratory atmosphere of 73 6 4 °F (23 6 2 °C) and 50 6 10 %
cation F1055 electrofusion fittings, Specification D2683 socket
relative humidity, unless otherwise specified in the test meth-
fusion fittings or Specification D3261 butt heat fusion fittings
ods or in this specification. In cases of disagreement, the
shall be acceptable. The tubing manufacturer shall indicate the
tolerances shall be 62 °F (61 °C) and 65 % relative humidity.
recommended fitting types for use with their tubing as indi-
cated in 9.2.
7.3 Sampling—A sufficient quantity of tubing or systems
6.8.1 Fusion Joints—Tubing with external barrier layers
components, as agreed upon by the purchaser and the seller,
shall only be joined by fusion if recommended by the tubing
shall be selected and tested to determine conformance with this
manufacturer and where tubing is prepared so as to completely
specification. In the case of no prior agreement, random
remove the barrier layer within the fusion zone per the tubing
samples selected by the testing laboratory shall be deemed
manufacturer’s recommendations. Tubing with mid-wall bar-
adequate.
rier layers shall not be joined with fusion fittings.
7.3.1 Test Specimens—Unless otherwise specified in this
standard or as agreed upon by the purchaser and the seller, the
NOTE 3—An external barrier layer will compromise electrofusion or
socket fusion joining if not completely removed. A midwall barrier layer quantity and size of the specimens to be tested shall be as
´1
F2623 − 24
specified by the test method referred to in this standard. five assemblies of system component specimens and five
Manifolds with integral shut-offs (valves) shall be in the tubing specimens, with a minimum total of five joints, in
full-open or unrestricted position. accordance with Test Method D1599 Method B. The pressure
values are given in Table 6. If the optional 140 °F rating is
7.4 Dimensions and Tolerances of tubing—Use any length
desired, perform a test at 140 °F (60 °C) in accordance with
of tubing to determine the dimensions. Measure in accordance
Table 5. Each specimen of tubing shall be at least five times the
with Test Method D2122.
nominal diameter in length and not less than 12 in. (2530 cm)
7.4.1 Outside Diameter—Measure the outside diameter of
or more than 3.0 ft (90 cm) between joints. Failure shall be
the tubing in accordance with Test Method D2122. The referee
defined in accordance with Test Method D1599 and shall
method of measurement is to be by circumferential wrap tape.
include leakage or separation at any of the joints.
The tolerance for out-of-roundness shall apply only to tubing
7.7 Oxidative Resistance—The test shall be conducted and
prior to shipment. Averaging micrometer or vernier caliper
the extrapolated time-to-failure shall be determined in accor-
measurements, four (4) maximum and minimum diameter
dance with Test Method F2023. The test fluid shall be prepared
measurements at any cross section, may be used for quality
in accordance with 9.1.1 of Test Method F2023. The extrapo-
control checks if desired.
lated time-to-failure shall be calculated in accordance with
7.4.2 Wall Thickness—Make micrometer measurements of
13.3 of Test Method F2023.
the wall thickness in accordance with Test Method D2122 to
7.7.1 Significance—The test need only be performed once
determine the maximum and minimum values. Measure the
and only once for the original validation of a compound tested
wall thickness at both ends of the tubing to the nearest 0.001 in.
in the form of a tube. A compound is defined as the PE-RT resin
(0.025 mm).
and the stabilization system. It shall not be required to perform
7.4.3 Barrier Layer and Bonding/Tie Layer(s)—Make mea-
plant or extrusion line verification testing.
surements of the layer or layers using either a video
7.
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