1、Designation: C 1540 04Standard Specification forHeavy Duty Shielded Couplings Joining Hubless Cast IronSoil Pipe and Fittings1This standard is issued under the fixed designation C 1540; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, the year 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 evaluating of the perfor-mance of heavy duty shielded couplings to join
3、hubless castiron soil pipe and fittings.1.2 Couplings covered by this standard shall have minimumdimensions as found in Table 1 and Fig. 1 of this standard.1.3 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.1.4 The c
4、ommittee with jurisdiction over this standard isaware of comparable standards published by other organiza-tions, namely Cast Iron Soil Pipe Institute specification CISPI310 and Factory Mutual Research standard FM 1680.1.5 The following precautionary caveat pertains only to thetest method portion, Se
5、ction 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 appropriate safety and healthpractices and determine the applicability of regulatory limita-tions pri
6、or to use.2. Referenced Documents2.1 ASTM Standards:2A 240 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and StripA 493 Specification for Stainless Wire and Wire Rods forCold Heating and Cold ForgingA 888 Specification for Hubless Cast Iron Soil Pipe andFittings f
7、or Sanitary, Storm and Drain, Waste, and VentPiping ApplicationsC 564 Specification for Rubber Gaskets for Cast Iron SoilPipe and FittingsC 717 Terminology of Building Seals and Sealants2.2 CISPI Standards:CISPI-301 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Dra
8、in, Waste and VentPiping ApplicationsCISPI-310 Specification for coupling for use in Connectionwith Hubless Cast Iron Soil Pipe and Fittings for Sanitaryand Storm Drain, Waste and Vent Piping ApplicationsFM 1680 Approval Standard Couplings used in HublessCast Iron Systems for Drain, Waste or Vent Sy
9、stems aboveor below ground Industrial, Commercial, and Residential3. Terminology3.1 Definitions:3.1.1 Definitions of the following terms used in this speci-fication are found in Terminology C 717.3.2 Definitions of Terms Specific to This Standard:3.2.1 center stop, nan integral part of the gasket ce
10、nteredon 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.3.2.3 coupling, nthe complete assembly.3.2.4 fitting, nparts of a pipeline other than straight pipes,valves, or couplings.3.2
11、.5 gasket, nthe elastomeric portion of the coupling.3.2.6 heavy duty coupling, na shielded coupling that hasdimensions not less than those detailed in Table 1 and Fig. 1.3.2.7 joint, nthe point of assembly consisting of thecoupling and the joined pipes or fittings, or both.3.2.8 shield, nan external
12、 metallic protective device de-signed to protect the sealing gasket from external elements thatcould cause failure of the sealing assembly.4. Materials and Manufacture4.1 Physical properties of gaskets shall comply with Speci-fication C 564 using the applicable durometer hardness re-quirement of the
13、 column of Table 2 of that document asspecified by the manufacturer.1This specification is under the jurisdiction of ASTM Committee A04 on IronCastings and is the direct responsibility of Subcommittee A04.75 on Gaskets andCouplings for Plumbing and Sewer Piping.Current edition approved May 1, 2004.
14、Published August 2004. Originallyapproved in 2002. Last previous edition approved in 2002 as C 1540 02.2For 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
15、 Document Summary page onthe ASTM website.TABLE 1Nominal Pipe Size Coupling Width112 to 4 in. (38 to 100 mm) 3 in. (76 mm) Minimum Width5 to 10 in. (127 to 254 mm) 4 in. (100 mm) Minimum Width12 to 15 in. (305 to 381 mm) 512 in. (140 mm) Minimum Width1Copyright ASTM International, 100 Barr Harbor Dr
16、ive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.2 Clamp assembly screws or bolts shall not have screw-driver slots.4.3 All stainless steel shall meet the physical requirementsof Specification A 240.5. Elastomeric Gasket Requirements5.1 The elastomeric gasket shall consist of one
17、piece poly-chloroprene construction conforming to the physical require-ments 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
18、.2 The elastomeric gasket shall be free of defects thataffect the use and serviceability.6. Clamp Assembly Requirements6.1 The clamp assembly shall be made of material conform-ing to the requirements as outlined in Sections 4 and 6.6.1.1 All metallic parts shall be of 300 series stainless steeland s
19、hall conform to the requirements of Specification A 240.All metallic parts made from round stock shall be of 300 seriesstainless steel and shall conform to the requirements ofSpecification A 493 (excluding copper bearing alloys).6.1.2 Clamp assemblies shall be tested to withstand no lessthan 125 % o
20、f the manufacturers stated installation torquewithout visible signs of failure. The clamp assembly shall betested over a steel mandrel of the appropriate diameter andtorqued as required.7. Couplings Requirements and Test Methods7.1 Assemble each coupling to be tested according to themanufacturers in
21、structions between two sections of randomlyselected hubless cast iron soil pipe meeting the requirements ofCISPI 301 or Specification A 888 and conduct deflection andshear tests. In addition, unrestrained hydrostatic tests shall beperformed as detailed in 7.2.7.1.1 Deflection Test:7.1.1.1 A test app
22、aratus such as the one shown in Fig. 2 isFIG. 1 Typical Center Stop DetailTABLE 2 Dimensions and Tolerances for Hubless Pipe andFittingsSize,in. (mm)Outside Diameter,in. (mm)112 (38) 1.90 6 0.06 (48.26 6 1.52)2 (51) 2.35 6 0.09 (59.69 6 2.29)3 (76) 3.35 6 0.09 (85.09 6 2.29)4 (102) 4.38+0.09-0.05 (1
23、11.25+2.29/-1.27)5 (127) 5.30+0.09-0.05 (134.63+2.29/-1.27)6 (152) 6.30+0.09-0.05 (160.02+2.29/-1.27)8 (203) 8.38+0.13-0.09 (212.85+3.30/-2.29)10 (254) 10.56 6 0.09 (268.22 6 2.29)12 (305) 12.50 6 0.09 (317.5 6 2.29)15 (381) 15.83 6 0.09 (402.08 6 2.29)FIG. 2 Deflection TestC1540042suggested. Other
24、testing apparatus 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 8.6 psi (59.3 kPa) for the durationof the test. One pipe shall be rigidly supporte
25、d and while theassembly is under pressure, raise the opposite end of the otherpipe 1 in. (25 mm) per lineal foot of pipe. Maintain the pressurefor 15 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 m
26、inimum 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. 3. The other coupled length sh
27、all 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 per in. (22.7 kg) of nominal diameter at a point6 in. (152.4 mm) from the edge of the coupling upon a 12 in
28、.(304.8 mm) length of 3 by 3 in. (76.2 by 76.2 mm) angle ironor load distribution pad located on the top of the pipeimmediately adjacent to the coupling of the pipe having onesupport only. Under this loading there shall be no visibleleakage or displacement of more than38 in. (9.53 mm) fromtrue align
29、ment adjacent to the coupling, when an internalpressure equivalent to a 20 ft (6.10 m) head of water 8.6 psi(59.3 kPa) is applied. Maintain the load and internal pressurefor 15 min.7.2 Unrestrained Hydrostatic Joint Test:7.2.1 Assemble each coupling to be tested according to themanufacturers instruc
30、tion between two sections of machinedsteel pipe and conduct the unrestrained hydrostatic joint test.7.2.2 The assembly shall consist of a maximum outsidediameter pipe connected to a minimum outside diameter pipewith diameters as referenced in Table 2 and lengths as shownin Fig. 4. Machine the plain
31、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 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 t
32、ested. The tool used to machine the groovesshall have a 60 included angle and cut into the pipe from aperpendicular position. The surface between the grooves shallbe a lathe turned surface of 125 RMS.7.2.3 The plain ends of the pipe for the thrust test shall beuncoated and cleaned with acetone and t
33、horoughly dried beforeeach assembly.7.2.4 Test Method:7.2.4.1 Support the pipe assemblies in a manner that doesnot restrain joint movement as shown in Fig. 4.7.2.4.2 Fill the pipe assembly (as required in 7.2) withwater, expelling all air. Increase the hydrostatic pressure at arate of 1 psi (6.9 kPa
34、) every 30 s until the specified testpressure is reached. The specified test pressure shall be 30 psi(206.8 kPa) for 112 in. (38.1 mm) through 5 in. (127 mm), 27psi (186 kPa) for 6 in. (152.4 mm), 15 psi (103.4 kPa) for 8 in.(203.2 mm), 9 psi (62 kPa) for 10 in. (254 mm), and 6 psi (31.3kPa) for 12
35、and 15 in. pipe. When the specified test pressure isreached, hold it for 15 min. Any leakage or axial jointmovement of more than 0.150 in. (3.81 mm) shall mean failure.8. Markings and Identification8.1 Permanently mark each clamp assembly with the manu-facturers name or U.S. registered trademark, co
36、untry of origin,all stainless and the pipe size for which it is designed. Markingshall be visible after installation.8.2 Gasket markings shall conform to Specification C 564.8.3 The product shall also have any other markings requiredby law and shall have the option to include this designation(Specif
37、ication C 1540).FIG. 3 Shear TestC1540043APPENDIX(Nonmandatory Information)X1. INSTALLATION PROCEDURES FOR HUBLESS CAST IRON SOIL PIPE AND FITTINGS FOR SANITARY AND STORMDRAIN, WASTE AND VENT PIPING APPLICATIONSX1.1 IntroductionX1.1.1 Several different types of hubless couplings areavailable for use
38、 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 this portion of C 1540 tofurnish procedures as to the installation of couplings, which
39、 aremanufactured in accordance with C 1540 when applied to castiron soil pipe and fittings manufactured in accordance withCISPI Standard 301 and SpecificationA 888, latest revisions. Itmust be noted that these installation procedures are notintended to be applicable for couplings not made in accorda
40、ncewith C 1540.X1.1.2 The installation procedures stated below are illustra-tive only and are not a mandatory portion of C 1540.X1.2 PurposesX1.2.1 These installation procedures provide guidelines forinstallation, use and inspection of hubless cast iron soil pipeand fittings for sanitary and storm d
41、rain, waste, and vent pipingapplications when the coupling device described in C 1540 isused.X1.2.2 All construction projects involve many variables,hence it is not possible to state in advance every installationconsideration which may apply in the field. In the end the finaland controlling judgment
42、 decisions concerning installationFIG. 4 Unrestrained Hydrostatic Joint Testing ApparatusC1540044questions that arise must be made in the design and “on thejob” taking into account prevailing circumstances or condi-tions. These procedures are not a substitute for such informedjudgements and for manu
43、facturer-provided installation instruc-tions.X1.2.3 Complete stability of all components of hubless castiron soil pipe and fittings for sanitary and storm drain, waste,and vent piping applications should be given prime consider-ation.X1.3 Methods of Cutting Cast Iron Soil PipeX1.3.1 There are severa
44、l methods of successfully cuttingcast iron soil pipe. These methods may be placed into two basiccategories; those that require external power for their operationand those methods that require only hand operation. Methodsthat require external power are usually used for prefabricationwork or high volu
45、me cutting operations. Examples of this typeof equipment would be: (1) the abrasive saw (chop SAW), (2)power hack saw, and (3) an electrically actuated hydraulic snapcutter. Before using electrical equipment of this nature, themanufacturers operating instructions should be carefully re-viewed for sa
46、fe use of the equipment.X1.3.2 There are two hand operated cutting tools that areused in the industry today: (1) the standard steel pipe cutterusing cutting wheels specifically designed to cut cast iron soilpipe, and (2) the snap cutter. The snap cutter accounts for themajority of all cuts made on c
47、ast iron soil pipe in the field.There are several types of snap cutter available, the followingprocedure has been found to produce consistently good cuts:X1.3.2.1 After marking the pipe length to be cut, positionthe chain cutter squarely around the pipe to ensure a straightcut. The maximum number of
48、 wheels possible should be incontact with the pipe.X1.3.2.2 Score the pipe by applying pressure on the handlesto make the cutter wheels indent the pipe.X1.3.2.3 Rotate the pipe a few degrees and then apply quickfinal pressure to complete the cut. If a piece of pipe isunusually tough, score the pipe
49、several times before makingyour final cut. Scoring the pipe before the actual cut is the keyto a clean straight cut.X1.3.3 Cast iron soil pipe may also be cut with a hammerand a cold chisel. This method of cutting is very timeconsuming and should only be used if snap cutters are notavailable. Again, protective equipment, such as safety goggles,should be used. The procedure for cutting soil pipe with ahammer and chisel are as follows:X1.3.3.1 Measure the length to be cut and mark the cut linecompletely around the circumference of the pipe.X1.3.3.2 Place the mark t
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