1、Designation: C 1173 08Standard Specification forFlexible Transition Couplings for Underground PipingSystems1This standard is issued under the fixed designation C 1173; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t 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 These specifications describe the properties of devicesor assemblies suitable for use as flexible transition couplings,he
3、reinafter referred to as couplings, for underground drainageand sewer piping systems.1.2 Couplings that may include bushings or inserts and thatmeet the requirements of this standard are suitable for joiningplain end pipe or fittings. The pipe to be joined shall be ofsimilar or dissimilar materials,
4、 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 The ASTM standards referenced herein shall be consid-ered mandator
5、y.1.5 The committee with jurisdiction over this standard is notaware of another comparable standard for materials covered inthis standard.2. Referenced Documents2.1 ASTM Standards:2A 644 Terminology Relating to Iron CastingsD 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensio
6、nD 471 Test Method for Rubber PropertyEffect of LiquidsD 518 Test Method for Rubber DeteriorationSurfaceCracking3D 543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD 573 Test Method for RubberDeterioration in an AirOvenD 638 Test Method for Tensile Properties of PlasticsD 1
7、149 Test Methods for Rubber DeteriorationCrackingin an Ozone Controlled EnvironmentD 2240 Test Method for Rubber PropertyDurometerHardnessD 3045 Practice for Heat Aging of Plastics Without Load3. Terminology3.1 DefinitionsFor definitions of terms used in this stan-dard, see Terminology A 644.3.2 Def
8、initions 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 fittingparts of a pipeline other than the straight pipecouplings, or valves.3.2.3 flexible transition couplings
9、devices used to form aleakproof joint between sections of plain end pipe or fittings ofthe same or different materials, of the same or different size, orany combination of materials or pipe sizes.3.2.4 free torquethe torque value expressed in lbfin./Nmwhen the clamp is tightened four revolutions of
10、the screw nut;while in the free state, this value does not include anybreakaway effects due to staking or passage of the band endsbeyond the screw heads.3.2.5 insertsa bushing or ring placed into the couplingsocket to accommodate pipe materials of differing outsidediameters.3.2.6 jointthe completed
11、assembly of parts consisting ofthe flexible transition coupling and the joined pipes, or fittings,or both.3.2.7 lota specific quantity 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 sh
12、ipment, batch, or similar quantity.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 the pipe ends within acoupling so as to provide increased resistance
13、to axial displace-ment.1These specifications are under the jurisdiction of ASTM Committee A04 onIron Castings and are the direct responsibility of Subcommittee A04.75 on Gasketsand Coupling for Plumbing and Sewer Piping.Current edition approved Oct. 1, 2008. Published November 2008. Originallyapprov
14、ed in 1991. Last previous edition approved in 2006 as C 1173 06.2For 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 websi
15、te.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Classification4.1 The couplings shall be permitted to have a center stop.The compone
16、nts shall be designed so that the elastomericmaterial is compressed to form a hydrostatic seal when thejoint is assembled. The couplings shall be of the typesdescribed in 4.1.1-4.1.3.4.1.1 Type AA coupling consisting of an elastomericsleeve incorporating corrosion resistance tension bands and atight
17、ening mechanism. Couplings shall be fabricated with orwithout shear rings, and with or without a center stop.4.1.2 Type BA coupling consisting of an elastomeric orrubber sleeve incorporating a corrosion resistant outer sleeveand tension bands, or tightening mechanism, or both (Note 1).4.1.3 Type CA
18、coupling fabricated with elastomeric com-pression seals.NOTE 1The provisions of this standard are not intended to prevent theuse of any alternate material or method of construction, provided any suchalternate meets the requirements of this standard.5. Materials and Manufacture5.1 Elastomeric materia
19、ls used in the manufacturing ofcouplings and inserts shall comply with the requirements setforth in Table 1.5.2 Stainless steel tension bands shall be of the 300 seriesstainless steel.5.3 Couplings or bushings/inserts, or both, of multi-piececonstruction or with splices shall show no separation, pee
20、ling,or other defects when tested in accordance with Section 9.5.4 The coupling shall be free from porosity and air pockets.Its surface shall be smooth and free from pitting, cracks,blisters, air marks, or any other imperfections that affect itsperformance in service. The flash extension shall not e
21、xceed 1mm at any point where the presence of flash affects perfor-mance.6. Requirements Requirements6.1 The physical and chemical properties of the couplingmaterials shall conform to the requirements specified in Table1.7. Dimensions7.1 Couplings and bushing dimensions shall be compatiblewith the di
22、mensions and tolerances of the specific material towhich it is designed to join.8. Sampling, Tests, and Retests8.1 Test specimens representative of the couplings to beused shall be randomly selected from the manufactured lot fortesting.8.2 No less than two couplings for each size or type shall betes
23、ted, unless otherwise specified or waived by the purchaser.8.3 Where there is a failure in the original test, the entire testshall be rerun with twice the number of samples and any failureshall be cause for rejection.9. Test Methods9.1 Elastomeric Materials:9.1.1 HardnessHardness shall be measured o
24、n either afinished surface, a squarely cut end, or a flat sliced or buffedsurface, depending on the size and shape of the specimen. SeeTest Method D 2240.9.1.2 Tensile Strength and Elongation The dumbbellsshall be prepared from sections of the finished material. SeeTest Methods D 412.9.1.3 Heat Agin
25、g, for hardness, tensile and elongation shallbe performed in accordance with Test Method D 573. Speci-mens shall be oven-aged for 96 h at 158 6 3.6F (70 6 2C).9.1.4 Ozone ResistanceTest specimens shall be used asdescribed in Test Method D 518, Procedure A, stretched 20 %and exposed to an ozone conce
26、ntration of 50 parts per 100million for 100 h at 104 6 3.6F (40 6 2C). See Test MethodD 1149.9.1.5 Water AbsorptionSize and time determinations shallbe set in accordance with Test Method D 471. A specimen0.075 by 1 by 2 in. (1.9 by 25 by 50 mm) shall be immersed indistilled water at 158 6 3.6F (70 6
27、 2C) for 7 days. Afterseven days the specimen shall be removed, the surface mois-ture blotted and the specimen weighed. The percent gain shallbe determined by the following equation:WF 2 WO!WO 100where:WF = weight of specimen after immersion for 7 days, andWO = dry weight of specimen before immersio
28、n.9.1.6 Chemical ResistanceSamples shall be aged for 48 hat 74 6 3.6F (23 6 2C) using solutions of 1N sulfuric acidand 1N hydrochloric acid. See Test Method D 543.9.2 Tension Band Performance:TABLE 1 Test RequirementsPropertiesPhysicalRequirementsASTM TestMethodElastomeric MaterialsHardness, Nominal
29、 Shore “A” Durometeras specified by the coupling manufacturer5075 D 2240Hardness, Nominal Shore “D” Durometeras specified by the coupling manufacturer3545 D 2240Tensile strength, min psi (KPa) 1000 (6894) D 412,DieC,Fig. 2 or D 638Elongation at rupture, min, % 200 D 412,DieC,Fig. 2 or D 638Heat agin
30、g, 70 h, 158 6 3.6F (70 6 2C) D 573 orD 3045Hardness increase, maximum Durometerpoints10Change in tensile strength, max, % 25Change in elongation, max, % 35Ozone resistance No cracks D 1149At 20 % elongationFor 100 h at 1046 3.6F (40 6 2C)With 50 parts per 100 millionWater absorption, weight gain, %
31、, max 20 D 471Chemical resistance, 48 h, 746 3.6F (236 2C)no weight loss D 543Stainless Steel MaterialsTorque resistance, 60 in.-lb (6.8 Nm) no failure 9.2 of C1173Manufacturers required torque resistance no failure 9.2 of C1173Joint AssembliesDeflection resistance 4.3 psi (30 kPa) as given in Table
32、29.3.1 of C1173Shear loading resistance (optional) as given in Table39.3.2 of C1173C11730829.2.1 Torque ResistanceStainless steel tension bands shallbe tested to withstand the manufacturers required torque or aminimum of 60 in.-lb (8.5 Nm) of applied torque withoutvisible signs of failure. The band
33、shall be tested over a steelmandrel of the appropriate coupling diameter and torqued asrequired.9.2.2 The maximum free running torque shall be 4 in.-lb(0.45 Nm).9.2.2.1 Stainless steel tension bands with torque resistancein excess of 100 in.-lb shall have a maximum free runningtorque of 8 in.-lb.9.2
34、.3 Test Procedure for Free Running Torque:9.2.3.1 With the nonstressed clamp hand held and theslotted band fully engaged, the screw shall be rotated clock-wise 10 revolutions with the maximum value of the torquemeter recorded.9.2.3.2 The equipment required shall be a hand held torquemeter witha0to15
35、in.-lb range.9.3 Joint Assemblies:9.3.1 Deflection Sealing Resistance The joint shall havesufficient flexibility to permit deflection in any direction asdefined by Table 2 and shall show no visible leakage when sodeflected while under an internal hydrostatic pressure of 4.3 psi(30 KPa). The ends of
36、the test pipe shall be restrained only byan amount necessary to prevent longitudinal movement. Thedeflection shall be measured as the distance the free end of theone pipe has moved away from the center line of the fixed pipe.See Fig. 1.9.3.2 Shear Loading ResistanceThe joint shall have suf-ficient r
37、esistance to shear loading to meet the requirements ofthe following test. Two lengths of pipe shall be joined by acoupling with the two joined lengths of pipe supported onblocks at three locations. One length of pipe shall be supportedon two blocks, one near the unjoined end, and the otherimmediatel
38、y adjacent to the joint. This length shall then befirmly restrained in position. The other length of pipe shall besupported by a single block located 36 in. (0.9 m) from thecenterline of the joint. A load of 50 lb/in. (220N/25 mm) ofnominal pipe diameter adjusted by the weight of pipe extend-ing bey
39、ond the support times its moment arm divided by themoment arm to the test load, shall be uniformly applied over anarc of 120 and along a longitudinal length of 24 in. (0.6 m)immediately adjacent to the joint of the pipe having onesupport (see Fig. 2). While thus loaded, an internal hydrostaticpressu
40、re of 4.3 psi (30 KPa) shall be maintained for a period of1 h with the temperature of water, pipe, and atmosphere withinthe range between 60 and 75F (15.5 and 23.8C) (Note 2).NOTE 2Fig. 2 and Table 3 in 9.3.1 are not mandatory at this timebecause Subcommittee C24.75 is attempting to verify the proce
41、dure andvalues.10. Certification10.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification stating samples rep-resenting each lot have been tested and inspected as indicatedin this specification and the requirements have been met. Whenspecified in the purcha
42、se order or contract, a report of the testresults shall be furnished.11. Product Marking11.1 Each coupling shall be marked with the manufacturersname or trademark, or both.11.2 The type and size of pipe for which the coupling isintended or the manufacturers product number shall bemarked on or attach
43、ed to each coupling.12. Keywords12.1 couplings; drainage; elastomeric; flexible; sewer; tran-sition; underground pipingTABLE 2 RequirementsDeflection per Foot of Pipe LengthANominal ID,in. (mm), incl.Offset in./linear ft(mm/linear m)212 (50300)12 (42)1524 (375600)38 (31)2736 (675900)14 (21)3942 (975
44、1050)316 (15)ASee 9.3.1.NOTE 1Deflection (in.(mm) = L(ft(m) 3 offset (in./linear ft (mm/linear m). See Table 2.FIG. 1 Deflection Test (Plan View)NOTE 1For maximum axial deviation values, see Table 3.FIG. 2 Shear TestTABLE 3 Maximum Axial DeviationANominal ID,in. (mm), incl.Axial Deflection,in. (mm)2
45、6 (50150)38 (9)812 (200300)78 (22)1524 (375600) 118 (28)2736 (675900)34 (19)3942 (9751050)916 (14)ASee 9.3.2.C1173083ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly
46、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 subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, eit
47、her reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend
48、. 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 standard 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).C1173084
