1、Designation: C1277 18Standard Specification forShielded Couplings Joining Hubless Cast Iron Soil Pipe andFittings1This standard is issued under the fixed designation C1277; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year o
2、f 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 materials and testing ofshielded hubless couplings to join hubless cast iron soil pipe
3、and fittings.1.2 Several different types of hubless couplings are avail-able for use in hubless cast iron sanitary and storm drain,waste, and vent piping applications to connect hubless cast ironsoil pipe and fittings by using a sleeve-type, or some other typecoupling device. It is the purpose of th
4、is specification to furnishinformation as to the characteristics of one such sleeve-typecouplings when applied to cast iron soil pipe and fittingsmanufactured in accordance with Specification A888, latestrevision, and CISPI-301, latest revision.1.3 The values stated in inch-pound units are to be reg
5、ardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 The committee with jurisdiction over this standard isaware of other comparable standard published by the Cast IronSoil Pipe Institute, C
6、ISPI-310, FM 1680 published by FactoryMutual, and Specification C1540 published by ASTM.1.5 The following precautionary caveat 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 us
7、e. It is the responsibility of the userof this standard to establish appropriate safety, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on
8、 standard-ization established 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:2A240/A240M Specification for Chromium an
9、d Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for PressureVessels and for General ApplicationsA644 Terminology Relating to Iron CastingsA888 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste, and VentPiping ApplicationsC564 Specification for Ru
10、bber Gaskets for Cast Iron SoilPipe and FittingsC1540 Specification for Heavy Duty Shielded CouplingsJoining Hubless Cast Iron Soil Pipe and FittingsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Ru
11、bber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD2240 Test Method for Rubber Prop
12、ertyDurometer Hard-nessD3677 Test Methods for RubberIdentification by InfraredSpectrophotometry2.2 CISPI Standards:3CISPI-301 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste and VentPiping ApplicationsCISPI-310 Specification for Couplings for Use in Conn
13、ec-tion with Hubless Cast Iron Soil Pipe and Fittings forSanitary and Storm Drain, Waste, and Vent Piping Appli-cations1This 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 S
14、ewer Piping.Current edition approved Feb. 1, 2018. Published February 2018. Originallyapproved in 1994. Last previous edition approved in 2015 as C1277 15. DOI:10.1520/C1277-18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. F
15、or Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Cast Iron Soil Pipe Institute (CISPI), 2401 Fieldcrest Dr.,Mundelein, IL 60060, http:/www.cispi.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, We
16、st Conshohocken, PA 19428-2959. 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 T
17、rade Organization Technical Barriers to Trade (TBT) Committee.12.3 Factory Mutual Standard:4FM 1680 Couplings Used in Hubless Cast Iron Systems forDrain, Waste or Vent, Sewer, Rainwater or Storm WaterSystem, Above or Below Ground, Industrial, Commercialand Residential3. Terminology3.1 Definitions of
18、 the following terms used in this specifi-cation are found in Terminology A644: elastomeric and durom-eter.3.2 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
19、 to be coupled.3.2.2 clamp assembly, nthat portion of the coupling ex-cluding the gasket and shield.3.2.3 corrugated, nany method of embossing.3.2.4 coupling, nthe complete assembly.3.2.5 fitting, nparts of a pipeline other than straight pipes,valves, or couplings.3.2.6 gasket, nthe elastomeric port
20、ion 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 manufacturer clamp assembly and shield, nthe en-tity that attaches the clamp assembly to the shield for thecouplings covered by this standard specification.3.2.9 manufact
21、urer gaskets, nthe entity that molds thegaskets covered by this standard specification.3.2.10 shield, nan external metallic protective devicedesigned to protect the sealing gasket from external elementsthat could cause failure of the sealing gasket.4. Materials and Manufacture4.1 Physical properties
22、 of gaskets shall comply with Speci-fication C564 and the dimensions, material specifications, andphysical and chemical properties as shown in Figs. 1-2 andTables 1 and 2.4Available from Factory Mutual Research, 1151 Boston-Providence Turnpike,Norwood, MA, 02062.FIG. 1 Rubber GasketC1277 1824.2 Clam
23、p assembly screws or bolts shall not have screw-driver slots.5. Elastomeric Gasket Requirements5.1 The gaskets shall be tested in accordance with TestMethods D3677 and be manufactured from a properly vulca-nized virgin compound where the primary elastomer is poly-chloroprene (neoprene).5.2 The elast
24、omeric gasket shall consist of one piece con-forming to the physical requirements of Specification C564.The gaskets shall be tested by the gasket manufacturer forcompliance to Specification C564 during each day of produc-tion not to exceed 24 h for each size of gasket being produced.These tests shal
25、l be performed at the manufacturers locationduring the time of production. These tests shall includehardness, elongation and tensile strength, tear strength, andcompression set. Heat aging, water absorption, ozoneresistance, and oil immersion tests shall be performed annuallyor when the formulation
26、changes or sources of supply change,whichever occurs first.5.2.1 The elastomeric gasket shall have an inside center stopthat does not create an enlargement chamber or recess with aledge, shoulder, or reduction of pipe area or offer an obstruc-tion to flow.5.2.2 The elastomeric gasket shall be free o
27、f defects thataffect the use and serviceability.6. Clamp Assembly Requirements6.1 The shield and clamp assembly shall be made ofmaterial conforming to the requirements as outlined in Section6, Table 3, and Fig. 3.NOTE 1Dimensions found in these drawings are for informational purposes only. The dimen
28、sions A and B found in the table are mandatory.Dimensions D1 and D2 found in the table are reference for mold design. Tolerances are found in Fig. 2. The center stop width is (3/32) .094 plus the5 draft angle. Sealing ring shape and dimensions are to manufacturers design.Dimensions112 in. 2 in. 3 in
29、. 4 in. 5 in. 6 in. 8 in. 10 in. 12 in. 15 in.A 1.062 1.062 1.062 1.062 1.500 1.500 2.000 2.000 2.750 2.750B 2.125 2.125 2.125 2.125 3.000 3.000 4.000 4.000 5.500 5.500D1 1.531 1.968 2.968 4.000 4.968 5.968 7.968 9.975 12.000 15.200D2 1.937 2.343 3.343 4.406 5.343 6.343 8.343 10.350 12.430 15.650NOT
30、E 2Dimensional tolerances to be RMA Class 3 (see Table 1).FIG. 1 Rubber Gasket (continued)C1277 1836.1.1 All parts shall be of 300 series stainless steel. All partsmade from round stock shall be of 300 series stainless steel(excluding copper-bearing alloys). The shield shall be corru-gated or otherw
31、ise provided with a mechanism to accommo-date maximum and minimum ODs of pipe and fittings andinclude two stainless steel bands for sizes 112 to 4 in., fourbands for 5 to 10 in., and six bands for 12 and 15 in. Eachtightening device housing shall interlock with a band at theunslotted end. The bands
32、are to be fastened to the shield byriveting or such other method that will ensure that the bandswill not become separated from the shield. The shield andclamp assembly shall comply with dimensions and materialspecifications as given in Table 3 and Figs. 3 and 4.6.1.2 Clamp assemblies shall be tested
33、 to withstand no lessthan 125 % of the manufacturers stated installation torque ora minimum of 60 lbfin. (6.78 Nm) of applied torque,whichever is greater, without visible signs of failure. Theclamp assembly shall be tested over a steel mandrel of theappropriate diameter and torqued as required. Thes
34、e tests shallbe performed randomly on selected samples during the courseNOTE 1Dimensions found in these drawings are for informational purposes only. The dimensions found in the table are mandatory. Tolerances arefound in Fig. 2. Sealing ring shape and dimensions are to manufacturers design.Dimensio
35、ns for Reducing Sleeves2112 32 43A 1.062 1.062 1.062B 2.125 2.125 2.125C 0.297 0.594 0.625D1 1.531 1.968 2.968D2 1.937 2.343 3.343D3 2.343 3.343 4.406NOTE 2Dimensional tolerances to be RMA Class 3 (see Table 1).FIG. 2 Reducing Rubber GasketTABLE 1 Dimensional Tolerances for Rubber StandardDimensiona
36、l Tolerances RMA CLASS 3Size, in. Fixed, Closure, 0 to 0.499 0.010 0.0150.500 to 0.999 0.010 0.0181.000 to 1.999 0.015 0.0202.000 to 2.999 0.020 0.0253.000 to 3.999 0.025 0.0304.000 to 4.999 0.030 0.0355.000 to 7.999 0.035 0.050NOTE 18.000 and overmultiplied by 0.0050. These are commercialtolerances
37、. All diametral dimensions shall have a tolerance of 61%.C1277 184of production as needed but not less than one clamp per shiftper size during band production.6.1.3 The clamped shield shall meet the requirements ofTable 3.6.1.4 The couplings shall meet the dimensional require-ments of Fig. 3.7. Coup
38、lings Requirements and Test Methods7.1 Assemble each coupling tested according to the manu-facturers instructions between two sections of randomlyselected hubless cast iron soil pipe meeting the requirements ofCISPI-301 or Specification A888 and conduct the followingtests: deflection and shear. In a
39、ddition, an unrestrained hydro-static test will be performed between two sections of machinedsteel pipe. The unrestrained hydrostatic tests shall be per-formed on randomly selected couplings of each size during thecourse of production using first article selection not to exceed30 days. The deflectio
40、n and shear tests shall be performed onrandomly selected couplings of each size during productionwhenever a change of design occurs or not to exceed 120 days,whichever is the shorter period.7.1.1 Deflection Test:7.1.1.1 A test apparatus such as the one shown in Fig. 5 issuggested. Other testing appa
41、rati that provide restraint to theassembly shall also be permitted. Close the outboard ends ofthe pipe with test plugs.TABLE 2 Rubber Gasket Physical RequirementsNOTE 1Material: The sealing sleeve shall be made from an elastomeric compound that meets the requirements of Specification C564.NOTE 2Phys
42、ical Tests: The test specimens shall be obtained from finished sleeves and tested pursuant to the methods described in the following table.TestPhysical Tests,Min or Max RequirementsASTMTest MethodTensile Strength 1500 psi min D412Elongation 250 min D412Durometer (Shore A) 705at765F D2240Accelerated
43、Aging 15 % max tensile and 20 % max elongation deterioration, 10 pointsmax; increase in hardness, all determinations after oven aging for96 h at 158 FD573Compression Set 25 % max after 22 h at 158 F D395 Method BOil Immersion 80 % max. volume change after immersion in ASTM oil no. IRM903for 70 h at
44、212 FD471Ozone Cracking No visible cracking at 2 times magnification of the gasket after 100 h.Exposure in 1.0 ppm ozone concentration at 100 F. Testing andinspection to be on gasket which is loop mounted to give approxi-mately 20 % elongation of outer surfaceD1149Tear Resistance Die C; 150 lb min p
45、er inch of thickness D624Water Absorption 20 % max by weight after 7 days at 158 F D471TABLE 3 Material SpecificationsBand Type 301 AISI stainless steel minimum tensile 140 000 psi for 112 to 15in.; Type 304 AISI stainless steel is permittedType 304 AISI stainless steel minimum tensile 140 000 psiEy
46、elets/Rivets Type 300 grade AISI stainless steelScrew Housing Type 301 AISI stainless steel for 112 to 15 in.; Type 304 AISI stainless steelis permittedScrew Type 305 AISI and or Type 304L annealed stainless steel 516 hex head/shoulder for 112 to 10 in.;38 hex head/shoulder for 12 and 15 in. isrequi
47、red for couplings which require installed torque greater than 60 in.-lbfWhen other than38-in. hex head screw is used on 12 and 15-in. couplings,the coupling shall be labeled with the required installation torqueShield Type 301 AISI and or Type 304 AISI stainless steel bright annealed only(annealed a
48、nd pickled not acceptable)Hardness Rockwell B-100 (Vickers 240) per A240/A240M max (max burrheight not to exceed 25 % of thickness)(1) Construction for sizes 112 thru 10 in. shields have corrugations tapering in height from 0.000 to 0.030 in. at dimension “Y.”Y equals maximum of 1 in. (Type A only).
49、(2) Position clamps on shield as shown from inside end of clamp. Shield overlap to be as shown or reversed on 5, 6, 8, 10,12, and 15 in. only.(3) Securely fasten each clamp to shield, two places for sizes 112 to 4 in., three places for sizes 5, 6, 8, 10, 12, and 15 in.(4) Details of detent on 5, 6, 8, and 10-in. bands are shown in Fig. 4 (optional for 12 and 15 in.).(5) Max “X” is that dimension to which the clamp must open and still maintain positive engagement of the screw in the slotsof the clamping band. M
