1、Designation:C146108(Reapproved 2013)Standard Specification forMechanical Couplings Using Thermoplastic Elastomeric(TPE)Gaskets for Joining Drain,Waste,and Vent(DWV),Sewer,Sanitary,and Storm Plumbing Systems for Aboveand Below Ground Use1This standard is issued under the fixed designation C1461;the n
2、umber 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 T
3、his specification describes the properties of devices orassemblies suitable for use as mechanical couplings usingthermoplastic elastomeric(TPE)gaskets,hereinafter referredto as couplings,for joining drain,waste,and vent(DWV)sewer,sanitary,and storm plumbing systems for above andbelow ground use.1.2
4、The pipe to be joined shall be of similar or dissimilarmaterials or size,or both.1.3 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.1.4 T
5、he ASTM standards referenced herein shall be consid-ered mandatory.2.Referenced Documents2.1 ASTM Standards:2A644 Terminology Relating to Iron CastingsC1440 Specification for Thermoplastic Elastomeric(TPE)Gasket Materials for Drain,Waste,and Vent(DWV),Sewer,Sanitary and Storm Plumbing Systems3.Termi
6、nology3.1 DefinitionsFor definitions of terms used in thisspecification,see Terminology A644.3.2 Definitions of Terms Specific to This Standard:3.2.1 center stopan integral part of the gasket centered onits axial length intended to limit the insertion depth of the pipeto be coupled.3.2.2 fittingpart
7、s of a pipeline other than straight pipe,couplings,or valves.3.2.3 free torquethe torque value expressed in lbf-in.(N-m)when the clamp is tightened four revolutions of thescrew nut.While in the free state,this value does not includeany breakaway effects due to staking method or passage of theband en
8、ds beyond the screw heads.3.2.4 insertsa bushing or ring placed into the couplingsocket to accommodate pipe materials of differing outsidediameters.3.2.5 jointthe completed assembly of parts consisting ofthe flexible transition coupling and the joined pipes or fittings,or both.3.2.6 lota specific qu
9、antity of similar material or collec-tion of similar units from a common source;the quantityoffered for inspection and acceptance at any one time.A lotmight comprise a shipment,batch,or similar quantity.3.2.7 mechanical couplingsdevices used to join betweensections of plain end pipe or fittings of t
10、he same or differentmaterials,of the same or different size,or any combination ofmaterials and pipe sizes.3.2.8 plain-end pipeany pipe that does not include anybell,hub,threaded area,or other means of joining.3.2.9 shear ringan interior or exterior element which isused to span the distance between t
11、he pipe ends within acoupling so as to provide increased resistance to axial displace-ment.4.Classification4.1 The couplings shall have a center stop unless telescop-ing of the pipe is necessary for special applications.Thecomponents shall be designed so that the elastomeric materialis compressed to
12、 form a hydrostatic seal when the joint isassembled.The couplings shall be of the types described in4.1.1-4.1.3.1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.75 on Gaskets andCoupling for Plumbing and Sewer Pi
13、ping.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 2000.Last previous edition approved in 2008 as C1461 08.DOI:10.1520/C1461-08R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of A
14、STMStandards 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 4.1.1 UnshieldedA coupling consisting of an elastomericsleeve incorporating corrosion-resistan
15、t tension bands and atightening mechanism.Couplings shall be fabricated withoutshear rings.Couplings installed without metallic shear ringsshall not be installed in fire-resistive construction.4.1.2 ShieldedA coupling consisting of an elastomeric orrubber sleeve incorporating a metallic corrosion-re
16、sistant shearring and tension bands or tightening mechanism,or both.4.1.3 OtherA coupling(gasket)fabricated for elastomericcompression seals.5.Materials and Manufacture5.1 Elastomeric materials used in the manufacturing ofcouplings and inserts shall comply with the requirements inaccordance with Specification C1440.5.2 The stainless steel tension band assembly shall be 300series stainless steel,excluding copper bearing alloys,meetingthe requirements of the appropriate ASTM standard for stain-les