1、Designation: D 3212 96a (Reapproved 2003)e1An American National StandardStandard Specification forJoints for Drain and Sewer Plastic Pipes Using FlexibleElastomeric Seals1This standard is issued under the fixed designation D 3212; the number immediately following the designation indicates the year o
2、foriginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department
3、 of Defense.e1NOTEEditorial changes were made throughout in December 2004.1. Scope1.1 This 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 specific
4、ation is intended to cover thetest requirements, test methods, and acceptable materials. Thetest 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 ap
5、pendixes which provide explanatory material. Thesenotes and footnotes (excluding those in tables and 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: Thisstandar
6、d 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.2. Referenced Documents2.1 ASTM S
7、tandards:2D 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsF 477 Specification for Elastomeric Seals (Gaskets) forJoining Plastic PipeF 913 Specification for Thermoplastic Elastomeric Seals(Gaskets) for Joining Plastic Pipe3. Types3.1 This specification covers two typ
8、es of joints based oneffecting watertightness through compression of an elastomericseal 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 mechanicalmea
9、ns or devices to develop a pressure seal.4. Materials4.1 Material used for elastomeric seal in push-on jointsshall meet the requirements of either Specification F 477 orF 913.4.2 Lubricant, if required, shall be suitable for lubricatingthe parts of the joints in the assembly. The lubricant shall hav
10、eno deteriorating effects on the gasket and pipe materials.5. General Requirements5.1 Joints shall not leak when subjected to the internal andexternal hydrostatic tests of Section 7 for a period of 10 min.5.2 All surfaces of the joint upon or against which thegasket bears shall be smooth and free of
11、 cracks, fractures, orimperfections.5.3 DrawingsThe manufacturer shall furnish drawingsof the 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.5.5 In mechan
12、ical joints, the pipe spigot shall have a wallthickness sufficient to withstand, without deformation or col-lapse, the compressive force exerted when the fitting istightened.1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility
13、of Subcommittee F17.20 on Joining.Current edition approved Aug. 10, 2003. Published September 2003. Originallyapproved in 1973. Last previous edition approved in 1996 as D 3212 96a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.or
14、g. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.6 Some joint designs provide for the angular deflection ofa pip
15、e joint, without reducing watertightness. Where greaterdeflections 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 the forces caused by the compression of thegasket when joined without crackin
16、g or fracturing when testedin accordance with the requirements of the pipe manufacturer.6. Dimensions and Tolerances6.1 Dimensions of the joint components shall be in accor-dance with the manufacturers standard design dimensions andtolerances. Such dimensions shall be gaged at sufficientlyfrequent i
17、ntervals to assure dimensional control and satisfac-tory joint assembly. The method for measuring these dimen-sions shall be in accordance with Test Method D 2122.6.2 Gasket dimensions shall be in accordance with themanufacturers standard design dimensions and tolerances.The gasket shall be of such
18、size and shape as to provide anadequate compressive force against the spigot and socket afterassembly, to effect a positive seal under all combinations ofjoint and gasket tolerances, when tested in accordance withSection 7.7. Joint Qualification Requirements7.1 Assemble a piece of pipe into a bell o
19、r fitting as shownin Fig. 1. Seal the openings, using either solvent cement capsas shown, or mechanical sealing devices. The gasket shall belubricated as instructed by the manufacturer. Use water in theabsence of other lubricants.7.2 Perform the pressure and vacuum tests as described in7.5 on two pr
20、operly joined pipes in straight alignment.7.3 Deflect the joint to the maximum angular misalignmentspecified by the manufacturer. With the joint deflected, performpressure and vacuum tests described in 7.5.7.4 Using the test fixture shown in Fig. 2, commencemeasuring deflection when the load contact
21、s the top of thepipe. Apply further load until the point of load application hasmoved downward 5 % of the pipe outside diameter. Hold thisposition and perform the tests described in 7.5.NOTE 1The 5 % deflection criterion, which was arbitrarily selectedfor testing convenience, should not be considere
22、d as a limitation withrespect to in-use deflection.7.5 Test Methods:NOTE 2It may be found easier to perform all the pressure tests,followed by the vacuum tests, rather than alternate them.As an option, thesequence of tests may be pressure, vacuum, pressure for each condition in7.2, 7.3, and 7.4.7.5.
23、1 Internal Pressure TestFill the assembly with water.External restraints should be provided in the test equipment toprevent separation of the gasket joint under pressure. Apply apressure of 74 kPa (10.8 psi) (gage) (25-ft head) for 10 min.Visible leaks in the gasket joint constitute a failure.7.5.2
24、Vacuum Test(to be conducted after pressure testhas seated the gasket): Fill the assembly with air only. Apply avacuum of 74 kPa (22 in. Hg). Close the valve and remove thevacuum line. Allow the assembly to stand for 10 min to checkfor leaks before testing. The internal pressure shall not changemore
25、than 3 kPa (1 in. Hg). Perform the test required, notingthe internal pressure after the test condition is attained andagain 10 min later. The internal pressure shall not change morethan 17 kPa (5 in. Hg) during this second 10-min period.8. Retest and Rejection8.1 If the results of any test(s) do not
26、 meet the requirementsof this specification, the test(s) shall be conducted again onlyby agreement between the purchaser and the seller. Under suchagreement, minimum requirements shall not be lowered, nortests omitted, substituted, changed, or modified, nor shallspecification limits be changed. If u
27、pon retest, failure occurs,the quantity of product represented by the test(s) does not meetthe requirements of this specification.9. Keywords9.1 compression-type; elastomeric; joints; push-on joints;sealsFIG. 1 Test SpecimenD 3212 96a (2003)e12ASTM International takes no position respecting the vali
28、dity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subj
29、ect to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquar
30、ters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standar
31、d is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).NOTEL = actual pipe diameter or 610 mm (24 in.), whichever is greater.FIG. 2 Shear Deflection TestD 3212 96a (2003)e13
