Standard Specification for Flexible Transition Couplings for Underground Piping Systems

ABSTRACT
This specification describes the properties of devices or assemblies suitable for use as flexible transition couplings for underground drainage and sewer piping systems. Couplings that may include bushings or inserts, and meet the requirements of this specification are suitable for joining plain end pipe or fittings. Couplings shall be permitted to have a center stop, the components shall be designed so that the elastomeric material is compressed to form a hydrostatic seal when the joint is assembled. Assemblies shall be tested in different areas and each component shall conform to specified physical and mechanical requirements, namely: hardness, tensile strength, elongation, heat aging, hardness, ozone resistance, water absorption, and chemical resistance for the elastomeric materials; tension band performance, torque resistance, free running torque for the stainless steel materials; and deflection sealing resistance, and shear loading resistance for the joint assemblies.
SCOPE
1.1 This specification describes the properties of devices or assemblies suitable for use as flexible transition couplings, hereinafter referred to as couplings, for underground drainage and sewer piping systems.  
1.2 Couplings that may include bushings, inserts, or shear rings and conform to the requirements of this standard are suitable for joining plain end pipe or fittings. The pipe to be joined shall be of similar or dissimilar materials, size, or both.
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 The ASTM standards referenced herein shall be considered mandatory.
1.5 The committee with jurisdiction over this standard is not aware of another comparable standard for materials covered in this standard.

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Publication Date
14-Dec-2010
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ASTM C1173-10e1 - Standard Specification for Flexible Transition Couplings for Underground Piping Systems
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
´1
Designation:C1173 −10
StandardSpecification for
Flexible Transition Couplings for Underground Piping
1
Systems
This standard is issued under the fixed designation C1173; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
´ NOTE—Sections 5.1 and 7.2 were editorially corrected in May 2011.
1. Scope D471Test Method for Rubber Property—Effect of Liquids
D543Practices for Evaluating the Resistance of Plastics to
1.1 This specification describes the properties of devices or
Chemical Reagents
assemblies suitable for use as flexible transition couplings,
D573Test Method for Rubber—Deterioration in an Air
hereinafter referred to as couplings, for underground drainage
Oven
and sewer piping systems.
D624Test Method for Tear Strength of Conventional Vul-
1.2 Couplings that may include bushings, inserts, or shear
canized Rubber and Thermoplastic Elastomers
rings and conform to the requirements of this standard are
D638Test Method for Tensile Properties of Plastics
suitable for joining plain end pipe or fittings. The pipe to be
D1149TestMethodsforRubberDeterioration—Crackingin
joined shall be of similar or dissimilar materials, size, or both.
an Ozone Controlled Environment
1.3 Thevaluesstatedininch-poundunitsaretoberegarded D2240TestMethodforRubberProperty—DurometerHard-
ness
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only D3045Practice for Heat Aging of Plastics Without Load
D6147TestMethodforVulcanizedRubberandThermoplas-
and are not considered standard.
tic Elastomer—Determination of Force Decay (Stress
1.4 TheASTM standards referenced herein shall be consid-
Relaxation) in Compression
ered mandatory.
1.5 Thecommitteewithjurisdictionoverthisstandardisnot
3. Terminology
aware of another comparable standard for materials covered in
3.1 Definitions—For definitions of terms used in this
this standard.
standard, see Terminology A644.
2. Referenced Documents
3.2 Definitions of Terms Specific to This Standard:
2
2.1 ASTM Standards:
3.2.1 center stop, n—an integral part of the gasket centered
A240/A240MSpecification for Chromium and Chromium-
on its axial length intended to limit the insertion depth of the
Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
pipe to be coupled.
Vessels and for General Applications
3.2.2 clamp assembly, n—that portion of the coupling ex-
A493Specification for Stainless Steel Wire and Wire Rods
cluding the gasket.
for Cold Heading and Cold Forging
A644Terminology Relating to Iron Castings
3.2.3 coupling, n—the complete assembly.
D395Test Methods for Rubber Property—Compression Set
3.2.4 fitting, n—parts of a pipeline other than straight pipe
D412TestMethodsforVulcanizedRubberandThermoplas-
couplings, or valves.
tic Elastomers—Tension
3.2.5 flexible transition couplings, n—devices used to form
a leakproof joint between sections of plain end pipe or fittings
1
This specification is under the jurisdiction of ASTM Committee A04 on Iron
ofthesameordifferentmaterials,ofthesameordifferentsize,
Castings and is the direct responsibility of Subcommittee A04.75 on Gaskets and
Coupling for Plumbing and Sewer Piping.
or any combination of materials or pipe sizes.
Current edition approved Dec. 15, 2010. Published January 2011. Originally
3.2.6 free torque, n—the torque value expressed in
approved in 1991. Last previous edition approved in 2008 as C1173–08. DOI:
10.1520/C1173-10.
lbf·in./Nm when the clamp is tightened four revolutions of the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
screw nut; while in the free state, this value does not include
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
any breakaway effects due to staking or passage of the band
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ends beyond the screw heads.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1173−10
TABLE 1 Test Requirements
3.2.7 inserts, n—a bushing or ring placed into the coupling
socket to accommodate pipe materials of differing outside Physical ASTM Test
Properties
Requirements Method
diameters.
Elastomeric Materials
3.2.8 joint, n—the completed assembly of parts consisting
Hardness, Nominal Shore “A” Durometer 50–75 D2240
of the flexible transition coupling and the joined pipes, or as specified by the coupling manufacturer
Hardness, Nominal Shore “D” Durometer 35–45 D2240
fittings, or both.
as specified by the c
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