1、Designation:D321221An American National StandardStandard Specification forJoints for Drain and Sewer Plastic Pipes Using FlexibleElastomeric Seals1This standard is issued under the fixed designation D3212;the number immediately following the designation indicates the year oforiginal adoption or,in t
2、he 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This
3、specification covers joints for plastic pipe systemsintended for drain,and gravity sewerage pipe at internal orexternal pressures less than 25-ft head using flexible watertightelastomeric seals.This specification is intended to cover thetest requirements,test methods,and acceptable materials.Thetest
4、 methods described for the joints are not intended to beroutine quality control tests but to be reliability or performancerequirements.1.2 The text of this specification references notes,footnotes,and appendixes which provide explanatory material.Thesenotes and footnotes(excluding those in tables an
5、d figures)shallnot be considered as requirements of the specification.1.3 The following safety hazards caveat pertains only to thetest method portion,paragraph 7.5,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the respo
6、nsibility of the userof this standard to establish appropriate safety,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization es
7、tablished in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2122 Test Method for Determining Dimensions of Ther-moplastic P
8、ipe and FittingsF477 Specification for Elastomeric Seals(Gaskets)for Join-ing Plastic PipeF913 Specification for Thermoplastic Elastomeric Seals(Gaskets)for Joining Plastic Pipe3.Types3.1This specification covers two types of joints based oneffecting watertightness through compression of an elastome
9、ricseal or ring:3.1.1 Push-on JointA joint in which an elastomeric ringgasket is compressed in the annular space between a bell endor socket and a spigot end of pipe.3.1.2 Mechanical JointA joint made using mechanicalmeans or devices to develop a pressure seal.4.Materials4.1Material used for elastom
10、eric seal in push-on jointsshall meet the requirements of either Specification F477 orF913.4.2 Lubricant,if required,shall be suitable for lubricatingthe parts of the joints in the assembly.The lubricant shall haveno deteriorating effects on the gasket and pipe materials.5.General Requirements5.1 Jo
11、ints shall not leak when subjected to the internal andexternal hydrostatic tests of Section 7 for a period of 10 min.5.2All surfaces of the joint upon or against which thegasket bears shall be smooth and free of cracks,fractures,orimperfections.5.3 DrawingsThe manufacturer shall furnish drawings oft
12、he joint and gasket if requested by the purchaser.5.4 The gasket shall be the sole element depended upon tomake the joint flexible and watertight.The gasket shall be acontinuous elastomeric ring.5.5In mechanical joints,the pipe spigot shall have a wallthickness sufficient to withstand,without deform
13、ation orcollapse,the compressive force exerted when the fitting istightened.5.6 Some joint designs provide for the angular deflection ofa pipe joint,without reducing watertightness.Where greater1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the di
14、rect responsibility of Subcommittee F17.20 on Joining.Current edition approved Dec.1,2021.Published March 2022.Originallyapproved in 1973.Last previous edition approved in 2020 as D3212 20 DOI:10.1520/D3212-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer
15、 Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2
16、959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1deflections are required than permitted by the joint design,suitable fittings must be provided.5.7 The joint components shall be of such design that theywill withstand
