1、Designation: C 1277 09Standard Specification forShielded Couplings Joining Hubless Cast Iron Soil Pipe andFittings1This standard is issued under the fixed designation C 1277; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、 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 This specification covers the materials and testing ofshielded hubless couplings to join hubless cast iron soil pi
3、peand fittings.1.2 Several different types of hubless couplings are avail-able for use in hubless cast iron sanitary and storm drain, wasteand vent piping applications to connect hubless cast iron soilpipe and fittings by using a sleeve-type, or some other typecoupling device. It is the purpose of t
4、his 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 A 888, latestrevision, and CISPI-301, latest revision.1.3 The values stated in inch-pound units are to be r
5、egardedas 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,
6、 CISPI-310, FM 1680 published by FactoryMutual, and Specification C 1540 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
7、 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 Standards:2A 644 Terminology Relating to Iron CastingsA 888 Specification for Hubless
8、 Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste, and VentPiping ApplicationsC 564 Specification for Rubber Gaskets for Cast Iron SoilPipe and FittingsC 1540 Specification for Heavy Duty Shielded CouplingsJoining Hubless Cast Iron Soil Pipe and Fittings2.2 CISPI Standard:CISPI-30
9、1 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste and VentPiping Applications3CISPI-310 Specification for Couplings for Use in Connec-tion with Hubless Cast Iron Soil Pipe and Fittings forSanitary and Storm Drain, Waste, and Vent Piping Appli-cations3FM
10、1680 Couplings Used in Hubless Cast Iron Systems forDrain, Waste or Vent, Sewer, Rainwater or Storm WaterSystem, Above or Below Ground, Industrial, Commercialand Residential43. Terminology3.1 Definitions:3.1.1 Definitions of the following terms used in this speci-fication are found in Terminology A
11、644, elastomeric anddurometer.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 to be coupled.3.2.2 clamp assembly, nthat portion of the couplingexcluding th
12、e 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 portion of the coupling.1This specification is under the jurisdiction of ASTM Commit
13、tee A04 on IronCastings and is the direct responsibility of Subcommittee A04.75 on Gaskets andCoupling for Plumbing and Sewer Piping.Current edition approved Sept. 1, 2009. Published September 2009. Originallyapproved in 1994. Last previous edition approved in 2008 as C 1277 08.2For referenced ASTM
14、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 website.3Available from Cast Iron Soil Pipe Institute (CISPI), 5959 Shallowford Rd.,Suite
15、419, Chattanooga, TN 37421, http:/www.cispi.org.4Available from Factory Mutual Research, 1151 Boston-Providence Turnpike,Norwood, MA, 02062.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.7 joint, nthe point of assembly consistin
16、g of thecoupling and the joined pipes or fittings, or both.3.2.8 shield, nan external metallic protective device de-signed to protect the sealing gasket from external elements thatcould cause failure of the sealing gasket.3.2.9 Manufacturer Clamp Assembly and Shield, nTheentity that attaches the cla
17、mp assembly to the shield for thecouplings covered by this standard specification.3.2.10 Manufacturer Gaskets, nThe entity that molds thegaskets covered by this standard specification.4. Materials and Manufacture4.1 Physical properties of gaskets shall comply with Speci-fication C 564 and the dimens
18、ions, material specifications,physical and chemical properties as shown in Fig. 1, Fig. 2,Table 1, and Table 2.Dimensions112 in. 2 in. 3 in. 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 5.50
19、0 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 15.650NOTEDimensional Tolerances to be RMA Class 3 (See Table 1).FIG. 1 Rubber GasketC12770924.2 Clamp assembly screws or bolts shall not have screw-driver slots.5. Elast
20、omeric Gasket Requirements5.1 The elastomeric gasket shall consist of one piece con-forming to the physical requirements of Specification C 564.The gaskets shall be tested by the gasket manufacturer forcompliance to Specification C 564 during each day of produc-tion not to exceed 24 h for each size
21、of gasket being produced.These tests shall be performed at the manufacturer locationduring the time of production. These tests shall includehardness, elongation and tensile strength, tear strength andDimensions for Reducing Sleeves2 3 1-12 3 3 243 3A 1.062 1.062 1.062B 2.125 2.125 2.125C 0.297 0.594
22、 0.625D1 1.531 1.968 2.968D2 1.937 2.343 3.343D3 2.343 3.343 4.406NOTEDimensional Tolerances to be RMA Class 3 (See Table 1).FIG. 2 Reducing Rubber GasketTABLE 1 Dimensional Tolerances for RubberStandardDimensional Tolerances RMA CLASS 3Size, in. Fixed, 6 Closure, 60 to 0.499 0.010 0.0150.500 to 0.9
23、99 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 0.050NOTE8.000 and overmultiplied by 0.0050. These are commercialtolerances.C1277093compression set. Heat aging, water absorption, ozone resis-tance, and oil imm
24、ersion tests shall be performed annually orwhen the formulation changes or sources of supply whicheveroccurs first.5.1.1 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-t
25、ion to flow.5.1.2 The elastomeric gasket shall be free of 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. 3.6.1.1 All parts shall be of 300
26、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 otherwise provided with a mechanism to accommo-date maximum and minimum ODs of pipe and fittings andinclude 2 stainless steel bands for s
27、izes 112 to 4 in. and 4 bandsfor 5 to 10 in. and 6 bands for 12 and 15 in. Each tighteningdevice housing shall interlock with a band at the unslotted end.The bands are to be fastened to the shield by riveting or suchother method that will insure that the bands will not becomeseparated from the shiel
28、d. The shield and clamp assembly shallcomply with dimensions and material specifications, as aregiven in Table 3, Fig. 3, and Fig. 4.TABLE 2 Rubber Gasket Physical RequirementsNOTE 1Material: The sealing sleeve shall be made from an elastomeric compound that meets the requirements of Specification C
29、 564.NOTE 2Physical 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 RequirementsASTMMethodTensile Strength 1500 psi min D 412Elongation 250 min D 412Durometer (Shore A) 70 6 5F at 76 6
30、 5F D 2240Accelerated Aging 15 % max tensile and 20 % max elongation deterioration, 10 pointsmax; increase in hardness, all determinations after oven aging for96 h at 158FD 573Compression Set 25 % max after 22 h at 158F D 395 Method BOil Immersion 80 % max. volume change after immersion in ASTM oil
31、no. IRM903for 70 h at 212FD 471Ozone Cracking No visible cracking at 2 times magnification of the gasket after 100h. Exposure in 1.5 ppm ozone concentration at 100F. Testing andinspection to be on gasket which is loop mounted to give approxi-mately 20 % elongation of outer surfaceD 1149Tear Resistan
32、ce Die C; 150 lb min per inch of thickness D 624Water Absorption 20 % max by weight after 7 days at 158F D 471TABLE 3 Material SpecificationsBand Type 301 AISI Stainless SteelMinimum Tensile 165 000 psi for 112to 15 in.; Type 304 AISI Stainless Steel is permittedType 304 AISI Stainless SteelMinimum
33、Tensile 140 000 psiEyelets/Rivets Type 300 AISI Stainless SteelScrew Housing Type 301 AISI Stainless Steel for 112 to 15 in.; Type 304 AISIStainless Steel is permittedScrew Type 305 AISI Stainless Steel516 Hex Head/Shoulder for 112 to 10in.;38 Hex Head/Shoulder for 12 and 15 in. is required forcoupl
34、ings 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 requiredinstallation torqueShield Type 301 AISI Stainless SteelBright Annealed Only (Annealed andPickled Not Acceptable)HardnessRo
35、ckwell B-85 Max (Max Burr Height Not to Exceed25 % of Thickness) for Type 301 AISI Stainless Steel; RockwellB-95 Max (Max Burr Height Not to Exceed 25 % of Thickness) forType 304 AISI Stainless Steel(1) Construction for sizes 112 thru 10 in. shields have corrugations tapering in height from 0.000 to
36、 0.030 in. at dimension “Y.” Y equals maximum of 1 in. (Type A Only)(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
37、 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 slots of the clamping band. Min. “X” is that
38、dimension to which the clamping band must close and still maintain positive engagement of the screw in the slots of the clamping band.C1277094NOTEMarking allowed of couplings using non-corrugated shieldsPipe Size,in.Dimensions, in.PCLWX7, min X7, max112 0.813 6 0.188 6.688 7.5 6 0.125 2.125 1.50 2.5
39、02 0.813 6 0.188 8.188 9.0 6 0.125 2.125 2.00 3.003 0.813 6 0.188 11.438 12.25 6 0.125 2.125 3.00 4.004 0.813 6 0.188 14.813 15.63 6 0.125 2.125 4.00 5.005 2.375 6 0.125 17.563 19.94 6 0.125 3.000 5.30 6.206 2.375 6 0.125 20.250 22.63 6 0.125 3.000 6.30 7.208 3.000 6 0.125 26.000 29.00 6 0.125 4.000
40、 8.30 9.2010 3.000 6 0.125 33.250 36.25 6 0.250 4.000 10.45 11.3512 3.500 6 0.125 39.100 42.60 6 0.250 5.500 12.53 13.2715 3.500 6 0.125 49.200 52.70 6 0.250 5.500 15.75 16.49FIG. 3 Shield and Clamp AssemblyC12770956.1.2 Clamp assemblies shall be tested to withstand no lessthan 125 % of manufacturer
41、s stated installation torque or aminimum of 60 lbfin. (6.78 Nm) of applied torque, whicheveris greater, without visible signs of failure. The clamp assemblyshall be tested over a steel mandrel of the appropriate diameterand torqued as required. These tests shall be performedrandomly on selected samp
42、les during the course of productionas needed but not less than one clamp per shift per size duringband 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. Couplings Requirements and Test Methods7.1 Assemb
43、le 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 A 888 and conduct the followingtest: deflection and shear. In addition, an unrestrained hydro-static test wi
44、ll be performed between two sections of machinedsteel pipe. The deflection, shear, and unrestrained hydrostatictests shall be performed on randonly selected couplings of eachsize during the course of production using first article selectionnot to exceed 30 days.7.1.1 Deflection Test:7.1.1.1 A test a
45、pparatus such as the one shown in Fig. 5 issuggested. Other testing apparati that provide restraint to theassembly shall also be permitted. Close the outboard ends ofthe pipe with test plugs.7.1.1.2 Fill the assembly with water, expel all air, andhydrostatically pressurize to 4.3 psi (29.6 kPa) for
46、the durationof the test. One pipe shall be rigidly supported and while theassembly is under pressure, raise the opposite end of the otherpipe12 in. (12.7 mm) per lineal foot of pipe. Maintain thepressure for 5 min. Any leakage shall mean failure.NOTEDetail of typical coupling is shown. Other couplin
47、gs are allowed to have different designs such as spot welding.FIG. 4 Details of Detent on 5, 6, 8, and 10 in. Bands (Optional on 12 and 15 in.)FIG. 5 Deflection TestC12770967.1.2 Shear Test:7.1.2.1 Support two joined lengths of randomly selectedhubless cast iron soil pipe on blocks, a minimum of 112
48、 in.(38.1 mm) high, at three locations. One length shall be aminimum of 24 in. (609.6 mm) in length, supported on blocks,one near the uncoupled end, and the other immediatelyadjacent to the couplings. Firmly restrain this length in positionas shown in Fig. 6. The other coupled length shall be aminim
49、um of 5 ft (1.52 m) in length and supported by a singleblock 6 in. (152.4 mm) from the end of the pipe.7.1.2.2 Fill the assembly with water and expel all air. Applya load of 50 lb/in. of nominal diameter at a point 6 in. (152.4mm) from the edge of the coupling upon a 12 in. (304.8 mm)length of (3 by 3) angle iron or load distribution pad located onthe top of the pipe immediately adjacent to the coupling of thepipe having one support only. Under this loading there shall beno visible leakage or displacement of more than38 in. (9.53
