ASTM_C_1460_-_12.pdf

Designation:C146012Standard Specification forShielded Transition Couplings for Use With Dissimilar DWVPipe and Fittings Above Ground1This standard is issued under the fixed designation C1460;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the performance of shieldedtransition couplings to join dissimilar DWV pipe and fittingsabove ground up to and including 10 in.pipe and fittings.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following precaution comment pertains only to thetest method portion,Section 7,of this specification.Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.4 The committee with jurisdiction over this standard is notaware of any comparable standards published by other orga-nizations.2.Referenced Documents2.1 ASTM Standards:2A493 Specification for Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA644 Terminology Relating to Iron CastingsC564 Specification for Rubber Gaskets for Cast Iron SoilPipe and Fittings3.Terminology3.1 DefinitionsThe following definitions used in thisspecification are found in Terminology A644 elastomeric,thermoset,and thermoplastic3.2 Definitions of Terms Specific to This Standard:3.2.1 center stop,nan integral part of the gasket centeredon the axial length of the gasket intended to limit the insertiondepth of the pipe to be coupled.3.2.2clamp assembly,nthat portion of the couplingexcluding the gasket.3.2.3coupling,nthe complete assembly.3.2.4 dissimilar DWV pipe and fittings,n pipe and fittingsmade of different materials or different outside diameters,orboth.3.2.5 fitting,nparts of a pipeline other than straight pipes,valves,or couplings.3.2.6 gasket,nthe elastomeric portion of the coupling.3.2.7 joint,nthe point of assembly consisting of thecoupling and the joined pipes or fittings,or both.3.2.8 shield,nan external metallic protective device de-signed to protect the sealing gasket from external elements thatcould cause failure of the sealing assembly.4.Materials and Manufacture4.1 Physical properties of gaskets shall be in accordancewith Table 1 of Specification C564,using the Durometerhardness column as specified by the manufacturer.4.2 All steel parts made from round stock shall be 300 seriesstainless steel and shall conform to the requirements ofSpecification A493(excluding copper bearing alloys).5.Elastomeric Gasket Requirements5.1 The elastomeric gasket shall consist of one piece inaccordance with the physical requirements of 4.15.1.1The elastomeric gasket shall have an inside centerstop-ring spaced equal distance from the ends to serve as a stopbetween the pipe/fitting ends that does not create an enlarge-ment chamber or recess with a ledge,shoulder,or reduction ofpipe area or offer an obstruction to flow.A gasket without aninside center stop shall be permitted where telescoping of thepiping is necessary.5.1.2 The elastomeric gasket shall be free of defects thataffect the use and performance.1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings.Current edition approved Dec.1,2012.Published December 2012.Originallyapproved in 2000.Last previous edition approved in 2008 as C1460-08.DOI:10.1520/C1460-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Clamp Assembly Requirements6.1Clamp assemblies shall be tested to withstand no lessthan 125%of the manufacturer stated installation torque 60lb/in.minimum(6.78 N-m)of applied torque whichever isgreater without visible signs of failure.The clamp assemblyshall be tested over a steel mandrel sized within the range ofthe clamp and torqued as required.6.2Clamp assembly screws or bolts shall not have screw-driver slots.7.Coupling Requirements and Test Methods7.1 Assemble each coupling tested in accordance with themanufacturers instructions between two sections of randomlyselected pipe not to exceed 20 ft in length manufactured toappropriate standards for the type of pipe the couplings areexpected to join,and conduct the following tests:7.1.1 Deflection Test Mount each coupling tested betweentwo pieces of pipe as