ASTM C1461-21

Standard Specification for Mechanical Couplings Using Thermoplastic Elastomeric (TPE) Gaskets for Joining Drain, Waste, and Vent (DWV), Sewer, Sanitary, and Storm Plumbing Systems for Above and Below Ground Use

ABSTRACT
This specification covers the performance of shielded transition couplings using flexible PVC gaskets to join dissimilar DWV pipe and fittings above and below ground. The gaskets shall be permitted to be spliced or molded. The elastomeric gasket shall be free from imperfections and porosity that affects its use and serviceability. Clamps assembly screws or bolts shall not have screw-driver slots. Each coupling shall undergo deflection test, shear test, and unrestrained hydrostatic joint test.
SCOPE
1.1 This specification describes the properties of devices or assemblies suitable for use as mechanical couplings using thermoplastic elastomeric (TPE) gaskets, hereinafter referred to as couplings, for joining drain, waste, and vent (DWV), sewer, sanitary, and storm plumbing systems for above and below ground use.  
1.2 The pipe to be joined shall be of similar or dissimilar materials or 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 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.

General Information

• Status: Published
• Publication Date: 31-Aug-2021
• ICS: 21.140 - Seals, glands
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.75 - Gaskets and Coupling for Plumbing and Sewer Piping

Standards Content (Sample)

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.
Designation:C1461 −21
Standard Specification for
Mechanical Couplings Using Thermoplastic Elastomeric
(TPE) Gaskets for Joining Drain, Waste, and Vent (DWV),
Sewer, Sanitary, and Storm Plumbing Systems for Above
1
and Below Ground Use
This standard is issued under the fixed designation C1461; 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. Scope 3. Terminology
1.1 This specification describes the properties of devices or 3.1 Definitions—For definitions of terms used in this
specification, see Terminology A644.
assemblies suitable for use as mechanical couplings using
thermoplastic elastomeric (TPE) gaskets, hereinafter referred
3.2 Definitions of Terms Specific to This Standard:
to as couplings, for joining drain, waste, and vent (DWV),
3.2.1 center stop—an integral part of the gasket centered on
sewer, sanitary, and storm plumbing systems for above and
its axial length intended to limit the insertion depth of the pipe
below ground use.
to be coupled.
1.2 The pipe to be joined shall be of similar or dissimilar
3.2.2 fitting—parts of a pipeline other than straight pipe,
materials or size, or both.
couplings, or valves.
1.3 The values stated in inch-pound units are to be regarded 3.2.3 free torque—the torque value expressed in lbf-in.
as standard. The values given in parentheses are mathematical (N-m) when the clamp is tightened four revolutions of the
conversions to SI units that are provided for information only screw nut. While in the free state, this value does not include
and are not considered standard. any breakaway effects due to staking method or passage of the
band ends beyond the screw heads.
1.4 TheASTM standards referenced herein shall be consid-
3.2.4 inserts—a bushing or ring placed into the coupling
ered mandatory.
socket to accommodate pipe materials of differing outside
1.5 This international standard was developed in accor-
diameters.
dance with internationally recognized principles on standard-
3.2.5 joint—the completed assembly of parts consisting of
ization established in the Decision on Principles for the
the flexible transition coupling and the joined pipes or fittings,
Development of International Standards, Guides and Recom-
or both.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.2.6 lot—a specific quantity of similar material or collec-
tion of similar units from a common source; the quantity
2. Referenced Documents
offered for inspection and acceptance at any one time. A lot
2
might comprise a shipment, batch, or similar quantity.
2.1 ASTM Standards:
A644Terminology Relating to Iron Castings 3.2.7 mechanical couplings—devices used to join between
C1440Specification for Thermoplastic Elastomeric (TPE) sections of plain-end pipe or fittings of the same or different
Gasket Materials for Drain, Waste, and Vent (DWV), materials, of the same or different size, or any combination of
Sewer, Sanitary, and Storm Plumbing Systems materials and pipe sizes.
3.2.8 plain-end pipe—any pipe that does not include any
bell, hub, threaded area, or other means of joining.
1
This specification is under the jurisdiction of ASTM Committee A04 on Iron
3.2.9 shear ring—an interior or exterior element which is
Castings and is the direct responsibility of Subcommittee A04.75 on Gaskets and
used to span the distance between the pipe ends within a
Coupling for Plumbing and Sewer Piping.
couplingsoastoprovideincreasedresistancetoaxialdisplace-
Current edition approved Sept. 1, 2021. Published September 2021. Originally
approved in 2000. Last previous edition approved in 2017 as C1461–08 (2017).
ment.
DOI: 10.1520/C1461-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4. Classification
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.1 The couplings shall have a center stop unless telescop-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ing of the pipe is necessary for special applications. The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1461−21
components shall be designed so that the elastomeric material 8.2 Notlessthantwocouplingsforeachsizeortypeshallbe
is compressed to form a hydrostatic seal when the joint is tested, unless otherwise specified or waived by the purchaser.
asse
...

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: C1461 − 08 (Reapproved 2017) C1461 − 21
Standard Specification for
Mechanical Couplings Using Thermoplastic Elastomeric
(TPE) Gaskets for Joining Drain, Waste, and Vent (DWV),
Sewer, Sanitary, and Storm Plumbing Systems for Above
1
and Below Ground Use
This standard is issued under the fixed designation C1461; 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 describes the properties of devices or assemblies suitable for use as mechanical couplings using
thermoplastic elastomeric (TPE) gaskets, hereinafter referred to as couplings, for joining drain, waste, and vent (DWV)(DWV),
sewer, sanitary, and storm plumbing systems for above and below ground use.
1.2 The pipe to be joined shall be of similar or dissimilar materials or 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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A644 Terminology Relating to Iron Castings
C1440 Specification for Thermoplastic Elastomeric (TPE) Gasket Materials for Drain, Waste, and Vent (DWV), Sewer, Sanitary,
and Storm Plumbing Systems
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, see Terminology A644.
3.2 Definitions of Terms Specific to This Standard:
1
This specification is under the jurisdiction of ASTM Committee A04 on Iron Castings and is the direct responsibility of Subcommittee A04.75 on Gaskets and Coupling
for Plumbing and Sewer Piping.
Current edition approved Oct. 1, 2017Sept. 1, 2021. Published October 2017September 2021. Originally approved in 2000. Last previous edition approved in 20132017
as C1461 – 08 (2013).(2017). DOI: 10.1520/C1461-08R17.10.1520/C1461-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1461 − 21
3.2.1 center stop—an integral part of the gasket centered on its axial length intended to limit the insertion depth of the pipe to be
coupled.
3.2.2 fitting—parts of a pipeline other than straight pipe, couplings, or valves.
3.2.3 free torque—the torque value expressed in lbf-in. (N-m) when the clamp is tightened four revolutions of the screw nut. While
in the free state, this value does not include any breakaway effects due to staking method or passage of the band ends beyond the
screw heads.
3.2.4 inserts—a bushing or ring placed into the coupling socket to accommodate pipe materials of differing outside diameters.
3.2.5 joint—the completed assembly of parts consisting of the flexible transition coupling and the joined pipes or fittings, or both.
3.2.6 lot—a specific quantity of similar material or collection of similar units from a common source; the quantity offered for
inspection and acceptance at any one time. A lot might comprise a shipment, batch, or similar quantity.
3.2.7 mechanical couplings—devices used to join between sections of plain-end pipe or fittings of the same or different materials,
of the same or different size, or any combination of materials and pipe sizes.
3.2.8 plain-end pipe—any pipe that does not include any bell, hub, threaded area, or other means of joining.
3.2.9 shear ring—an interior or exterior element which is used to span the distance between the pipe ends within a coupling so
as to provide increased resistance to axial displacement.
4. Classification
4.1 The couplings shall have a center stop unless telescoping of the pipe is necessary for special applications. The components
shall be d
...