ASTM F2767-12

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Designation:F2767 −12 An American National Standard
Standard Specification for
Electrofusion Type Polyamide-12 Fittings for Outside
Diameter Controlled Polyamide-12 Pipe and Tubing for Gas
1
Distribution
This standard is issued under the fixed designation F2767; 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* D2122 Test Method for Determining Dimensions of Ther-
moplastic Pipe and Fittings
1.1 This specification covers polyamide- 12 electrofusion
D4066 Classification System for Nylon Injection and Extru-
fittings for use with outside diameter-controlled polyamide- 12
sion Materials (PA)
pipe, covered by Specification F2785. Requirements for
D6779 Classification System for and Basis of Specification
materials, workmanship, and testing performance are included.
for Polyamide Molding and Extrusion Materials (PA)
Where applicable in this specification “pipe” shall mean “pipe”
F412 Terminology Relating to Plastic Piping Systems
or “tubing.”
F905 Practice for Qualification of Polyethylene Saddle-
1.2 Polyamide 12 electrofusion fittings are intended for use
Fused Joints
in polyamide 12 systems only. As per the manufacturer’s
F2785 Specification for Polyamide 12 Gas Pressure Pipe,
recommendations, no cross fusion between PA12, PA11 and PE
Tubing, and Fittings
is permitted.
3. Terminology
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 3.1 Definitions are in accordance with Terminology F412,
conversions to SI units that are provided for information only and abbreviations are in accordance with Terminology D1600,
and are not considered standard. unless otherwise specified.
1.4 The following safety hazards caveat pertains only to the
3.2 Definitions of Terms Specific to This Standard:
test method portion, Section 9, of this specification:This 3.2.1 electrofusion—a heat fusion joining process where the
standard does not purport to address all of the safety concerns,
heat source is an integral part of the fitting, such that when
if any, associated with its use. It is the responsibility of the user
electric current is applied, heat is produced that melts and joins
of this standard to establish appropriate safety and health
the plastics.
practices and determine the applicability of regulatory limita-
3.2.2 fusion interface—surface in the heat fusion process
tions prior to use.
where the plastic materials of the products being joined bond
together.
2. Referenced Documents
2
3.2.3 fusion zone length—total length of the melted material
2.1 ASTM Standards:
in the fitting cross-section under evaluation.
D638 Test Method for Tensile Properties of Plastics
D1598 Test Method for Time-to-Failure of Plastic Pipe
4. Materials and Manufacture
Under Constant Internal Pressure
4.1 This specification covers fittings made from polyamide
D1599 Test Method for Resistance to Short-Time Hydraulic
12 (PA12) meeting the requirements for Group 4, Class 2, and
Pressure of Plastic Pipe, Tubing, and Fittings
Grade 3, (PA423 16) as prescribed in Specification D6779 and
D1600 Terminology for Abbreviated Terms Relating to Plas-
D4066.
tics
4.2 Rework Material—Clean rework polyamide- 12 mate-
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rial of the same resin, free of any wire or contaminants
This specification is under the jurisdiction of ASTM Committee F17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.60 on Gas.
generated from the fitting manufacturer’s own production, may
Current edition approved Oct. 15, 2012. Published December 2012. Originally
be used by the same manufacturer, as long as the fittings
approve in 2009. Last previous edition appeoved in 2009 as F2767–09. DOI:
produced conform to the requirements of this specification.
10.1520/F2767-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.3 Heating Mechanism—The heat mechanism shall be of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
materials not detrimental to the performance of the fitting or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the pipe to which it is intended to be joined.
*A Summary of Changes section appears at the end of this standard
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F2767−12
5. Performance Requirements F2785, such that the joints will satisfy the performance
requirements in Section 5. (See Test Method D2122.)
5.1 The following requirements are for electrofusion joint
...