1、Designation: C1277 09aStandard 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
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 pip
3、eand 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 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 and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2A644 Terminology Relating to Iron CastingsA888 Specification for Hubless Cast
8、 Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste, and VentPiping ApplicationsC564 Specification for Rubber Gaskets for Cast Iron SoilPipe and FittingsC1540 Specification for Heavy Duty Shielded CouplingsJoining Hubless Cast Iron Soil Pipe and FittingsD3677 Test Methods for RubberIdent
9、ification by InfraredSpectrophotometry2.2 CISPI Standard:CISPI-301 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 forS
10、anitary and Storm Drain, Waste, and Vent Piping Appli-cations3FM 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 follow
11、ing terms used in this speci-fication are found in Terminology A644, 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
12、.3.2.2 clamp assembly, nthat portion of the couplingexcluding 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 portion of the coupl
13、ing.3.2.7 joint, nthe point of assembly consisting of thecoupling and the joined pipes or fittings, or both.1This 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 Sewer Piping
14、.Current edition approved Dec. 1, 2009. Published January 2010. Originallyapproved in 1994. Last previous edition approved in 2009 as C1277 09. DOI:10.1520/C1277-09a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual B
15、ook 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 419, Chattanooga, TN 37421, http:/www.cispi.org.4Available from Factory Mutual Research, 1151 Boston-Providence T
16、urnpike,Norwood, MA, 02062.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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 ga
17、sket.3.2.9 Manufacturer Clamp Assembly and Shield, nTheentity that attaches the clamp 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 P
18、hysical properties of gaskets shall comply with Speci-fication C564 and the dimensions, material specifications,physical and chemical properties as shown in Fig. 1, Fig. 2,Table 1, and Table 2.4.2 Clamp assembly screws or bolts shall not have screw-driver slots.5. Elastomeric Gasket Requirements5.1
19、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 elastomeric gasket shall consist of one piece con-forming to the physical requirements of Specification
20、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 shall be performed at the manufacturer locationduring the time of production. These tests shall include
21、hardness, elongation and tensile strength, tear strength andcompression set. Heat aging, water absorption, ozone resis-tance, and oil immersion tests shall be performed every 120days or when the formulation changes or sources of supply,whichever occurs first.5.2.1 The elastomeric gasket shall have a
22、n 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 of defects thataffect the use and serviceability.6. Clamp Assembly Requirements6.1 The shield and cla
23、mp 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 series stainless steel. All partsmade from round stock shall be of 300 series stainless steel(excluding copper bearing alloys). The shield shall be corru-ga
24、ted or otherwise provided with a mechanism to accommo-date maximum and minimum ODs of pipe and fittings andinclude 2 stainless steel bands 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.Th
25、e bands are to be fastened to the shield by riveting or suchother method that will insure that the bands will not becomeseparated from the 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
26、shall be tested to withstand no lessthan 125 % of manufacturers 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 req
27、uired. These tests shall be performedrandomly on selected samples 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
28、of Fig. 3.7. 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 ofCISPI-301 or Specification A888 and conduct the followingtest: deflection
29、 and shear. In addition, 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 day
30、s. The deflection and sheer tests shall be performed onrandomly selected couplings of each size during productionwhenever a change of design occurs or not to exceed 90 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. Oth
31、er 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 the durationof the test. One pipe shall be rigidly suppor
32、ted 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.7.1.2 Shear Test:7.1.2.1 Support two joined lengths of randomly selectedhubless cast iron soil pipe on blocks,
33、a minimum 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
34、 shall be 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
35、)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. (9.53mm) from true alignment adjacent to the coupling,
36、 when anC1277 09a2internal pressure equivalent to a 10 ft (3.05 m) head of water4.3 psi (29.6 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
37、 machinedsteel pipe and conduct the thrust test.NOTEDimensions found in these drawings are for informational purposes only. The dimensions found in the table are mandatory. Tolerances are foundin Fig. 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 1.0
38、62 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 15.650NOTEDimensional Tolerances to be RMA Class 3 (See Table 1).FIG. 1 Rubber
39、 GasketC1277 09a37.1.3.2 The assembly shall consist of a maximum 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 en
40、ds shall have 0.015in. (0.38 mm) deep grooves machined circumferentially 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
41、 into the pipe from aNOTEDimensions found in these drawings are for informational purposes only. The dimensions found in the table are mandatory. Tolerances are foundin Fig. 2.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 2.9
42、68D2 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 0.999 0.010 0.0181.000 to 1
43、.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.C1277 09a4perpendicular position. The surface between the grooves shallbe a lathe turned surface of 125 RMS.7
44、.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 pipe assemblies in a manner that doesnot restrain joint movement as shown in Fig. 7.7.1.4.2 Fill the pipe assembly (as requir
45、ed in 7.1.3) withwater, expelling all air. Increase the hydrostatic pressure at arate of 1 psi (6.9 kPa) every 30 s until the specified testpressure is reached. The specified test pressure shall be 20 psi(137.9 kPa) for 112 in. (38.1 mm) through 5 in. (127 mm), 18psi (124.1 kPa) for 6 in. (152.4 mm)
46、, 10 psi (68.9 kPa) for 8 in.(203.2 mm), and 6 psi (41.4 kPa) for 10 in. (254 mm) pipe, 12in. (305 mm), and 15 in. (380 mm). When the specified testpressure is reached, hold it for 10 min. Any leakage or axialjoint movement of more than 0.150 in. (3.81 mm) shall meanfailure.8. Markings and Identific
47、ation8.1 MarkingThe gasket shall be marked with raisedletters. This marking shall consist of pipe size, country oforigin, manufacturers identifying mark, and SpecificationC564. Such marking shall not exceed 0.02 in. in relief.8.2 The shield and clamp assembly shall be marked withindented letters. Al
48、l marking shall be placed on the bandassemblies. Marking on the band shall consist of pipe size.Marking on the screw housing shall consist of couplingmanufacturers name or registered. Trademark with a nationalregistry of trademarks in the country in which the product isinstalled, the words ALL STAIN
49、LESS, country of origin.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 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 D412Elongation 250 min D412Durometer (Shore A) 70 6 5F at 76 6 5F D2240Accelerated Aging 15 % max tensile and 20 % max
