ASTM F2735-09(2016)
(Specification)Standard Specification for Plastic Insert Fittings For SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing
Standard Specification for Plastic Insert Fittings For SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing
SCOPE
1.1 This specification establishes requirements for sulfone plastic insert fittings and copper crimp rings for three sizes (1/2 , 3/4 , and 1) of cross-linked polyethylene (PEX) and polyethylene of raised temperature (PE-RT) plastic tubing. These fittings are intended for use in 100 psi (690 kPa) cold- and hot-water distribution systems operating at temperatures up to and including 180°F (82°C). Included are the requirements for material, molded part properties, performance, workmanship, dimensions, and markings to be used on the fittings and rings.
1.2 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.
1.3 The following is an index of the appendix in this specification.
GO/NO-GO Crimp Gauges
Appendix X1
1.4 The following precautionary caveat pertains only to the test method portions, Sections 11 and 12, 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.
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Designation:F2735 −09 (Reapproved 2016) An American National Standard
Standard Specification for
Plastic Insert Fittings For SDR9 Cross-linked Polyethylene
(PEX) and Polyethylene of Raised Temperature (PE-RT)
Tubing
This standard is issued under the fixed designation F2735; 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* D6394 Specification for Sulfone Plastics (SP)
F412 Terminology Relating to Plastic Piping Systems
1.1 This specification establishes requirements for sulfone
F876 SpecificationforCrosslinkedPolyethylene(PEX)Tub-
plastic insert fittings and copper crimp rings for three sizes
ing
1 3
( ⁄2, ⁄4, and 1) of cross-linked polyethylene (PEX) and poly-
F877 SpecificationforCrosslinkedPolyethylene(PEX)Hot-
ethylene of raised temperature (PE-RT) plastic tubing. These
and Cold-Water Distribution Systems
fittings are intended for use in 100 psi (690 kPa) cold- and
F1498 Specification for Taper Pipe Threads 60° for Thermo-
hot-water distribution systems operating at temperatures up to
plastic Pipe and Fittings
and including 180°F (82°C). Included are the requirements for
F1807 Specification for Metal Insert Fittings Utilizing a
material, molded part properties, performance, workmanship,
Copper Crimp Ring for SDR9 Cross-linked Polyethylene
dimensions, and markings to be used on the fittings and rings.
(PEX) Tubing and SDR9 Polyethylene of Raised Tem-
1.2 Units—The values stated in inch-pound units are to be
perature (PE-RT) Tubing
regarded as standard. The values given in parentheses are
F2623 Specification for Polyethylene of RaisedTemperature
mathematical conversions to SI units that are provided for
(PE-RT) SDR 9 Tubing
information only and are not considered standard.
2.2 ASME Standard:
B1.20.1 Pipe Threads General Purpose Inch
1.3 The following is an index of the appendix in this
specification. 2.3 NSF International Standard
NSF/ANSI Standard No, 14 for Plastic Piping Components
GO/NO-GO Crimp Gauges Appendix X1
and Related Materials
1.4 The following precautionary caveat pertains only to the
NSF/ANSI Standard No. 61 for Drinking Water System
test method portions, Sections 11 and 12, of this specification.
Components-Health Effects
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
3. Terminology
of the user of this standard to establish appropriate safety and
3.1 Definitions—Definitions are in accordance with Termi-
health practices and determine the applicability of regulatory
nology F412 and abbreviations are in accordance with Termi-
limitations prior to use.
nology D1600, unless otherwise indicated.
2. Referenced Documents
4. Classification
2.1 ASTM Standards:
4.1 This specification governs one class of fittings and
1 3
D1600 Terminology forAbbreviatedTerms Relating to Plas-
copper crimp rings suitable for use with nominal size ⁄2, ⁄4,
tics
and 1 size PEX tubing that meets the requirements of Speci-
D2122 Test Method for Determining Dimensions of Ther-
fications F876 and polyethylene of raised temperature (PE-RT)
moplastic Pipe and Fittings
tubing that meets the requirements of Specification F2623.
5. Ordering Information
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
5.1 Material—Material—Fittings shall be molded from
Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.
sulfone plastic (SP) as specified in Specification D6394. The
Current edition approved April 1, 2016. Published May 2016. Originally
approved in 2008. Last previous edition approved in 2009 as F2735–09.
DOI:10.1520/F2735–09R16. Available from American Society of Mechanical Engineers (ASME), ASME
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
Standards volume information, refer to the standard’s Document Summary page on Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd.,Ann
the ASTM website. Arbor, MI 48113-0140, http://www.nsf.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
F2735−09 (2016)
material shall be polyphenylsulfone (group 03, class 1, grade 1 7.3 In addition, when a section with a title identical to that
or 2) or unreinforced polyphenylsulfone/polysulfone blends referenced in 7.2 appears in this specification, it contains
(group 04, Class 2, grade 1) or reworked plastic in accordance additional requirements that supplement those appearing in
with 5.1.1. Colored products can exceed the maximum specific Specification F877.
gravity listed provided that they comply with all other proper-
ties listed in Specification D6394 Table SP. 8. Dimensions
5.1.1 Since fittings specified by this standard will be used in
8.1 Dimensions and Tolerances—The dimensions and tol-
hot-and-cold water plumbing systems, a material used to
erances of fittings shall be as shown in Fig. 1, when measured
manufacture fittings in accordance with this specification must
in accordance with 11.1
demonstrate qualities consistent with that application in addi-
8.1.1 Alignment—The maximum angular variation of any
tion to the performance requirements of this specification.
opening shall not exceed 1° off the true centerline axis.
Those qualifying characteristics include, but are not limited to,
8.1.2 Tapered Threads—Fitting threads shall be American
an established hydrostatic design basis (HDB) or stress design
National Standard Taper Pipe Thread Form conforming to
basis (SDB) in accordance with PPI TR-3 or similar rating and
Specification F1498.
a demonstration of resistance to the long-term effects of those
8.1.3 Straight Threads—Straight pipe threads, intended for
chemicals normally found in potable water at the maximum
the making of a gasketed seal with taper pipe threads, shall be
temperature stated in this specification.
American National Straight Pipe Thread for Fixtures (free-
5.1.2 Rework Material—Clean rework material of the same
fitting mechanical joints), NPSM, and conform to ASME B
commercial designation, generated from the manufacturer’s
1.20.1.
own production may be used by the same manufacturer,
provided the fittings meet all of the requirements of this
9. Workmanship, Finish, and Appearance
specification. Reworked material shall not be introduced at a
ratio exceeding 25 %.
9.1 The sealing surfaces of the insert shall be smooth and
free of foreign material. The fitting walls shall be free of
5.2 Potable Water Requirements—Products intended for the
cracks, holes, blisters, voids, foreign inclusions, or other
transport of potable water shall be evaluated, tested and
defects that are visible to the unaided eye and that affect the
certified for conformance with NSF/ANSI Standard No. 61 or
wall integrity.
the health effects portion of NSF/ANSI Standard No. 14 by an
acceptable certifying organization when required by the regu- 9.2 Except for the insert, the molded part shall be free of
latory authority having jurisdiction. flash in excess of 0.005 in. (0.13 mm). Flash, mismatch, and
witness mark requirements for the insert shall be in accordance
5.3 Crimp Rings—Crimp rings shall be manufactured and
with Fig. 1.
marked in accordance with the requirements of Specification
F1807.
10. Assembly
10.1 Crimp Joints—Insert fittings shall be joined to PEX
6. Molded Part Properties
tubing by the compression of a copper crimp ring around the
6.1 Insert Crush—The fitting insert shall not crack, split, or
outer circumference of the tubing forcing the tubing material
shatter when tested in accordance with 12.1.
into annular spaces formed by ribs on the fitting. Insert fittings
and crimp rings shall meet the dimensional and material
6.2 Splay—The molded part shall be free of visible splay
requirements of this standard. PEX tubing shall meet the
excepting some slight blushing at the gate location.
requirements of Specifications F876. The dimensions and
out-of-roundness of the crimp ring after it has been crimped
7. Performance Requirements
shall be in accordance with Table 1.
7.1 General—All performance tests shall be performed on
10.1.1 Crimping Procedure—To affix the insert fitting to the
assemblies of fittings, crimp rings, and PEX tubing. Fittings
tubing with the crimp ring, the crimping procedure shall be as
and crimp rings shall meet the material and dimensional
follows: slide the crimp ring onto the tubing, insert the ribbed
requirements of this standard. PEX tubing shall meet the
end of the fitting into the end of the tubing until the tubing
requirements of Specification F876. Assembly of te
...
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: F2735 − 09 F2735 − 09 (Reapproved 2016)
Standard Specification for
Plastic Insert Fittings For SDR9 Cross-linked Polyethylene
(PEX) and Polyethylene of Raised Temperature (PE-RT)
Tubing
This standard is issued under the fixed designation F2735; 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 establishes requirements for sulfone plastic insert fittings and copper crimp rings for three sizes
1 3
( ⁄2, ⁄4, and 1) of cross-linked polyethylene (PEX) and polyethylene of raised temperature (PE-RT) plastic tubing. These fittings
are intended for use in 100 psi (690 kPa) cold- and hot-water distribution systems operating at temperatures up to and including
180°F (82°C). Included are the requirements for material, molded part properties, performance, workmanship, dimensions, and
markings to be used on the fittings and rings.
1.2 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.
1.3 The following is an index of the appendix in this specification.
GO/NO-GO Crimp Gauges Appendix X1
1.4 The following precautionary caveat pertains only to the test method portions, Sections 11 and 12, 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.
2. Referenced Documents
2.1 ASTM Standards:
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
D6394 Specification for Sulfone Plastics (SP)
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
F1498 Specification for Taper Pipe Threads 60° for Thermoplastic Pipe and Fittings
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
F2623 Specification for Polyethylene of Raised Temperature (PE-RT) SDR 9 Tubing
2.2 ASME Standard:
B1.20.1 Pipe Threads General Purpose Inch
2.3 NSF International Standard
NSF/ANSI Standard No, 14 for Plastic Piping Components and Related Materials
NSF/ANSI Standard No. 61 for Drinking Water System Components-Health Effects
This test method 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 Dec. 1, 2009April 1, 2016. Published January 2010May 2016. Originally approved in 2008. Last previous edition approved in 20082009 as
F2735–08. DOI:10.1520/F2735–09.F2735–09. DOI:10.1520/F2735–09R16.
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.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140, http://www.nsf.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
F2735 − 09 (2016)
3. Terminology
3.1 Definitions—Definitions are in accordance with Terminology F412 and abbreviations are in accordance with Terminology
D1600, unless otherwise indicated.
4. Classification
1 3
4.1 This specification governs one class of fittings and copper crimp rings suitable for use with nominal size ⁄2, ⁄4, and 1 size
PEX tubing that meets the requirements of Specifications F876 and polyethylene of raised temperature (PE-RT) tubing that meets
the requirements of Specification F2623.
5. Ordering Information
5.1 Material—Material—Fittings shall be molded from sulfone plastic (SP) as specified in Specification D6394. The material
shall be polyphenylsulfone (group 03, class 1, grade 1 or 2) or unreinforced polyphenylsulfone/polysulfone blends (group 04, Class
2, grade 1) or reworked plastic in accordance with 5.1.1. Colored products can exceed the maximum specific gravity listed
provided that they comply with all other properties listed in Specification D6394 Table SP.
5.1.1 Since fittings specified by this standard will be used in hot-and-cold water plumbing systems, a material used to
manufacture fittings in accordance with this specification must demonstrate qualities consistent with that application in addition
to the performance requirements of this specification. Those qualifying characteristics include, but are not limited to, an established
hydrostatic design basis (HDB) or stress design basis (SDB) in accordance with PPI TR-3 or similar rating and a demonstration
of resistance to the long-term effects of those chemicals normally found in potable water at the maximum temperature stated in
this specification.
5.1.2 Rework Material—Clean rework material of the same commercial designation, generated from the manufacturer’s own
production may be used by the same manufacturer, provided the fittings meet all of the requirements of this specification.
Reworked material shall not be introduced at a ratio exceeding 25 %.
5.2 Potable Water Requirements—Products intended for the transport of potable water shall be evaluated, tested and certified
for conformance with NSF/ANSI Standard No. 61 or the health effects portion of NSF/ANSI Standard No. 14 by an acceptable
certifying organization when required by the regulatory authority having jurisdiction.
5.3 Crimp Rings—Crimp rings shall be manufactured and marked in accordance with the requirements of Specification F1807.
6. Molded Part Properties
6.1 Insert Crush—The fitting insert shall not crack, split, or shatter when tested in accordance with 12.1.
6.2 Splay—The molded part shall be free of visible splay excepting some slight blushing at the gate location.
7. Performance Requirements
7.1 General—All performance tests shall be performed on assemblies of fittings, crimp rings, and PEX tubing. Fittings and
crimp rings shall meet the material and dimensional requirements of this standard. PEX tubing shall meet the requirements of
Specification F876. Assembly of test specimens shall be in accordance with Section 10. Use separate sets of assemblies for each
performance test requirement.
7.2 The following sections of Specification F877 constitute a part of this specification:
7.2.1 Hydrostatic Burst,
7.2.2 Hydrostatic Sustained Pressure Strength,
7.2.3 Thermocycling,
7.2.4 Excessive Temperature-Pressure Capability, and
7.2.5 Test Methods.
7.3 In addition, when a section with a title identical to that referenced in 7.2 appears in this specification, it contains additional
requirements that supplement those appearing in Specification F877.
8. Dimensions
8.1 Dimensions and Tolerances—The dimensions and tolerances of fittings shall be as shown in Fig. 1, when measured in
accordance with 11.1
8.1.1 Alignment—The maximum angular variation of any opening shall not exceed 1° off the true centerline axis.
8.1.2 Tapered Threads—Fitting threads shall be American National Standard Taper Pipe Thread Form conforming to
Specification F1498.
8.1.3 Straight Threads—Straight pipe threads, intended for the making of a gasketed seal with taper pipe threads, shall be
American National Straight Pipe Thread for Fixtures (free-fitting mechanical joints), NPSM, and conform to ASME B 1.20.1.
F2735 − 09 (2016)
A B
A B L H W G T R Maximum
Flash
and Mismatch
Size Outside Minimum Insert Minimum Number Rib Width Gap Width Minimum Minimum Total on
C D
(in.) Diameter ID Length Rib Height of Ribs Type Type Wall Radius Crest
EF
Diameter
⁄2 0.471 ± .004 0.315 0.480 ± 0.011 2 0.02- 0.04 0.114±.004 0.059 0.03 0.005
.004
⁄4 0.667 ± .004 0.490 0.480 ± 0.011 2 0.02- 0.04 0.114±.004 0.067 0.03 0.005
.004
1 0.856 ± .004 0.645 0.480 ± 0.011 2 0.02- 0.04 0.114±.004 0.084 0.03 0.005
.004
A
The minimum ID shall be maintained through the insert length and into the fitting, intersecting and minimum ID of the other fitting.
B
Fitting shall be designed with sufficient overall dimensions to allow proper use of crimp tool without interference w
...
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