1、Designation: C 1277 06Standard 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 (e) 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 p
3、ipeand 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
4、this 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
5、regardedas the standard. The SI units given in parentheses are forinformation only.1.4 The committee with jurisdiction over this standard isaware of other comparable standard published by the Cast IronSoil Pipe Institute, CISPI-310, FM 1680 published by FactoryMutual, and Specification C 1540 publis
6、hed 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 use. It is the responsibility of the userof this standard to establish appropr
7、iate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2A 888 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste, and VentPiping ApplicationsC 564 Specification for R
8、ubber Gaskets for Cast Iron SoilPipe and FittingsC 717 Terminology of Building Seals and SealantsC 1540 Specification for Heavy Duty Shielded CouplingsJoining Hubless Cast Iron Soil Pipe and Fittings2.2 CISPI Standard:CISPI-301 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary a
9、nd 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 1680 Couplings Used in Hubless Cast Iron Systems forDrain, Waste or Vent,
10、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 C 717, Paragraph 4.1:elastomeric, durometer and dynamic.3.2 Definitions of T
11、erms 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 the gasket and shield.3.2.3 corrugated, nany method
12、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 Committee A04 on IronCastings and is the direct responsi
13、bility of Subcommittee A04.75 on Gaskets andCouplings for Plumbing and Sewer Piping.Current edition approved June 1, 2006. Published June 2006. Originallyapproved in 1994. Last previous edition approved in 2004 as C 1277 04.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcont
14、act 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, 5959 Shallowford Rd., Suite 419,Chattanooga, TN 37421.4Available from Factory Mutual Resea
15、rch, 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 consisting of thecoupling and the joined pipes or fittings, or both.3.2.8 shield, nan externa
16、l metallic protective device de-signed to protect the sealing gasket from external elements thatcould cause failure of the sealing gasket.4. Materials and Manufacture4.1 Physical properties of gaskets shall comply with Speci-fication C 564 and the dimensions, material specifications,physical and che
17、mical 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 5.500 5.500D1 1.531 1.968 2.968 4.000 4.968 5.968
18、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 GasketC12770624.2 Clamp assembly screws or bolts shall not have screw-driver slots.5. Elastomeric Gasket Requirements5.1 The elastomeric
19、gasket shall consist of one piece con-forming to the physical requirements of Specification C 564.5.1.1 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-tion to flow.5.1.2
20、 The elastomeric gasket shall be free of defects thataffect the use and serviceability.Dimensions 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 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 (S
21、ee 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 0.999 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
22、0.0355.000 to 7.999 0.035 0.050NOTE8.000 and overmultiplied by 0.0050. These are commercialtolerances.C12770636. 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 o
23、f 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 otherwise provided with a mechanism to accommo-date maximum and minimum ODs of pipe and fittings andinclude 2 stainless steel bands
24、 for sizes 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
25、 shield. The shield and clamp assembly shallcomply with dimensions and material specifications, as aregiven in Table 3, Fig. 3, and Fig. 4.6.1.2 Clamp assemblies shall be tested to withstand no lessthan 125 % of manufacturers stated installation torque or aminimum of 60 lbfin. (6.78 Nm) of applied t
26、orque, whicheveris greater, without visible signs of failure. The clamp assemblyshall be tested over a steel mandrel of the appropriate diameterand torqued as required.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.
27、3.TABLE 2 Rubber Gasket Physical RequirementsNOTE 1Material: The sealing sleeve shall be made from an elastomeric compound that meets the requirements of Specification C 564.NOTE 2Physical Tests: The test specimens shall be obtained from finished sleeves and tested pursuant to the methods described
28、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 5F D 2240Accelerated Aging 15 % max tensile and 20 % max elongation deterioration, 10 pointsmax; increase in hardness, all determi
29、nations 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 no. IRM903for 70 h at 212FD 471Ozone Cracking No visible cracking at 2 times magnification of the gasket after 100h. Exposure in 1.
30、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 Resistance 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 Spec
31、ificationsBand Type 301 AISI Stainless SteelMinimum Tensile 165 000 psi for 112to 15 in.; Type 304 AISI Stainless Steel is permittedType 304 AISI Stainless SteelMinimum Tensile 140 000 psiEyelets/Rivets Type 300 AISI Stainless SteelScrew Housing Type 301 AISI Stainless Steel for 112 to 15 in.; Type
32、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 forcouplings which require installed torque greater than 60 in.-lbfWhen other than38 in. hex head screw is used on 12 and 15 in.couplings,
33、the coupling shall be labeled with the requiredinstallation torqueShield Type 301 AISI Stainless SteelBright Annealed Only (Annealed andPickled Not Acceptable)HardnessRockwell B-85 Max (Max Burr Height Not to Exceed25 % of Thickness) for Type 301 AISI Stainless Steel; RockwellB-95 Max (Max Burr Heig
34、ht 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 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
35、. 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 1
36、5 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 thatdimension to which the clamping band must close and still maintain positive engagement of the screw in the slots of the clamping ba
37、nd.C1277064NOTEMarking 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 2.502 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
38、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 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
39、0.125 49.200 52.70 6 0.250 5.500 15.75 16.49FIG. 3 Shield and Clamp AssemblyC12770657. Couplings 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 o
40、fCISPI-301 or Specification A 888 and conduct the followingtest: deflection and shear. In addition, an unrestrained hydro-static test will be performed between two sections of machinedsteel pipe.7.1.1 Deflection Test:7.1.1.1 A test apparatus such as the one shown in Fig. 5 issuggested. Other testing
41、 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 the durationof the test. One pipe shall be rigidly supported and wh
42、ile 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.7.1.2 Shear Test:7.1.2.1 Support two joined lengths of randomly selectedhubless cast iron soil pipe on blocks, a minimum
43、of 112 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
44、aminimum 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
45、 (3 by 3) angle iron or load distribution pad located onthe top of the pipe immediately adjacent to the coupling of theNOTEDetail of typical coupling is shown. Other couplings are allowed to have different designs such as spot welding.FIG. 4 Details of Detent on 5, 6, 8, and 10 in. Bands (Optional o
46、n 12 and 15 in.)FIG. 5 Deflection TestC1277066pipe having one support only. Under this loading there shall beno visible leakage or displacement of more than38 in. (9.53mm) from true alignment adjacent to the coupling, when aninternal pressure equivalent to a 10 ft (3.05 m) head of water4.3 psi (29.6
47、 kPa) is applied. Maintain the load and internalpressure for 15 min.7.1.3 Unrestrained Hydrostatic Test:7.1.3.1 Assemble each coupling tested according to themanufacturers instruction between two sections of machinedsteel pipe and conduct the thrust test.7.1.3.2 The assembly shall consist of a maxim
48、um outsidediameter pipe connected to a minimum outside diameter pipewith diameters as referenced in Table 4 and lengths as shownin Fig. 7. Machine the plain ends of the pipe to be used for thethrust test to the correct diameters. Plain ends shall have 0.015in. (0.38 mm) deep grooves machined circumf
49、erentially aroundthem at18 in. (3.18 mm) intervals down the pipe section for adistance equal to that covered by the elastomeric sleeve of thecoupling being tested. The tool used to machine the groovesshall have a 60 inclined angle and cut into the pipe from aperpendicular position. The surface between the grooves shallbe a lathe turned surface of 125 RMS.7.1.3.3 The plain ends of the pipe for the thrust test shall beuncoated and cleaned with acetone and thoroughly dried beforeeach assembly.7.1.4 Test Method:7.1.4.1 Support the pip
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1