1、Designation: C 1540 08Standard 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 () 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 h
3、ubless 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 standard. The values given in parentheses are mathematicalconversions to SI units
4、that are provided for information onlyand are not considered standard.1.4 The committee 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
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 appropriate safety and
6、 healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2A 240/A 240M Specification for Chromium andChromium-Nickel Stainless Steel Plate, Sheet, and Stripfor Pressure Vessels and for General ApplicationsA 493 Specification f
7、or Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA 644 Terminology Relating to Iron CastingsA 888 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste, and VentPiping ApplicationsC 564 Specification for Rubber Gaskets for Cast Iron SoilPi
8、pe and Fittings2.2 CISPI Standards:CISPI-301 Specification for Hubless Cast Iron Soil Pipe andFittings for Sanitary and Storm Drain, Waste and VentPiping ApplicationsCISPI-310 Specification for coupling for use in Connectionwith Hubless Cast Iron Soil Pipe and Fittings for Sanitaryand Storm Drain, W
9、aste and Vent Piping ApplicationsFM 1680 Approval Standard Couplings used in HublessCast Iron Systems for Drain, Waste or Vent Systems aboveor below ground Industrial, Commercial, and Residential3. Terminology3.1 Definitions:3.1.1 Definitions of the following terms used in this speci-fication are fo
10、und in Terminology A 644.3.2 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 the gas
11、ket.3.2.3 coupling, nthe complete assembly.3.2.4 fitting, nparts of a pipeline other than straight pipes,valves, or couplings.3.2.5 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. 1.1
12、This 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.Current edition approved Oct. 1, 2008. Published November 2008. Originallyapproved in 2002. Last previous ed
13、ition approved in 2004 as C 1540 04.2For 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 Document Summary page onthe ASTM website.TABLE 1Nominal Pipe Size
14、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 Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3
15、.2.7 joint, nthe point of assembly consisting 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 assembly.4. Materials and Manufacture4.1
16、Physical properties of gaskets shall comply with Speci-fication C 564 using the applicable durometer hardness re-quirement of the column of Table 2 of that document asspecified by the manufacturer.4.2 Clamp assembly screws or bolts shall not have screw-driver slots.4.3 All stainless steel shall meet
17、 the physical requirementsof Specification A 240.5. Elastomeric Gasket Requirements5.1 The elastomeric gasket shall consist of one 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 doe
18、s 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 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 c
19、onform-ing to the requirements as outlined in Sections 4 and 6.6.1.1 All metallic parts shall be of 300 series stainless steeland shall 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 requireme
20、nts ofSpecification A 493 (excluding copper bearing alloys).6.1.2 Clamp assemblies shall be tested to withstand no lessthan 125 % of the manufacturers stated installation torquewithout visible signs of failure. The clamp assembly shall betested over a steel mandrel of the appropriate diameter andtor
21、qued as required.7. Couplings Requirements and Test Methods7.1 Assemble each coupling to be tested according to themanufacturers instructions between two sections of randomlyselected hubless cast iron soil pipe meeting the requirements ofCISPI 301 or Specification A 888 and conduct deflection andshe
22、ar tests. In addition, unrestrained hydrostatic tests shall beperformed as detailed in 7.2.7.1.1 Deflection Test:7.1.1.1 A test apparatus such as the one shown in Fig. 2 issuggested. Other testing apparatus that provide restraint to theassembly shall also be permitted. Close the outboard ends ofthe
23、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 supported and while theassembly is under pressure, raise the opposite end of the otherpipe 1 in. (25 mm) per lineal foo
24、t 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 minimum of 112 in.FIG. 1 Typical Center Stop DetailTABLE 2 Dimensions and Tolerances for Hubless Pipe andFitting
25、sSize,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 (111.25+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+3.3
26、0/-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)C1540082(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 immediatelyadja
27、cent to the couplings. Firmly restrain this length in positionas shown in Fig. 3. The other coupled length 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 l
28、b 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.(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. Un
29、der this loading there shall be no visibleleakage or displacement of more than38 in. (9.53 mm) fromtrue alignment 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 Unrest
30、rained Hydrostatic Joint Test:7.2.1 Assemble each coupling to be tested according to themanufacturers instruction 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 o
31、utside diameter pipewith diameters as referenced in Table 2 and lengths as shownin Fig. 4. 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 circumferentially aroundthem at18 in. (3.18 mm) interva
32、ls 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 included angle and cut into the pipe from aperpendicular position. The surface between the grooves shallbe a lathe turned surface of
33、 125 RMS.7.2.3 The plain ends of the pipe for the thrust test shall beuncoated and cleaned with acetone and thoroughly 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 (a
34、s required in 7.2) 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 30 psi(206.8 kPa) for 112 in. (38.1 mm) through 5 in. (127 mm), 27psi (186 kPa) for 6 in. (152.4
35、 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 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 Identif
36、ication8.1 Permanently mark each clamp assembly with the manu-facturers name or U.S. registered trademark, country 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 s
37、hall also have any other markings requiredby law and shall have the option to include this designation(Specification C 1540).FIG. 2 Deflection TestFIG. 3 Shear TestC1540083APPENDIX(Nonmandatory Information)X1. INSTALLATION PROCEDURES FOR HUBLESS CAST IRON SOIL PIPE AND FITTINGS FOR SANITARY AND STOR
38、MDRAIN, WASTE AND VENT PIPING APPLICATIONSX1.1 IntroductionX1.1.1 Several different types of hubless couplings areavailable 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 oth
39、er typecoupling device. It is the purpose of this portion of C 1540 tofurnish procedures as to the installation of couplings, which aremanufactured in accordance with C 1540 when applied to castiron soil pipe and fittings manufactured in accordance withCISPI Standard 301 and SpecificationA 888, late
40、st revisions. Itmust be noted that these installation procedures are notintended to be applicable for couplings not made in accordancewith 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 pr
41、ocedures provide guidelines forinstallation, use and inspection of hubless cast iron soil pipeand fittings for sanitary and storm drain, 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 poss
42、ible to state in advance every installationconsideration which may apply in the field. In the end the finaland controlling judgment decisions concerning installationFIG. 4 Unrestrained Hydrostatic Joint Testing ApparatusC1540084questions that arise must be made in the design and “on thejob” taking i
43、nto account prevailing circumstances or condi-tions. These procedures are not a substitute for such informedjudgements and for manufacturer-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,a
44、nd vent piping applications should be given prime consider-ation.X1.3 Methods of Cutting Cast Iron Soil PipeX1.3.1 There are several methods of successfully cuttingcast iron soil pipe. These methods may be placed into two basiccategories; those that require external power for their operationand thos
45、e methods that require only hand operation. Methodsthat require external power are usually used for prefabricationwork or high volume 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 snapcut
46、ter. Before using electrical equipment of this nature, themanufacturers operating instructions should be carefully re-viewed for safe 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 speci
47、fically designed to cut cast iron soilpipe, and (2) the snap cutter. The snap cutter accounts for themajority of all cuts made on cast 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
48、marking the pipe length to be cut, positionthe chain cutter squarely around the pipe to ensure a straightcut. The maximum number of 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 t
49、he pipe a few degrees and then apply quickfinal pressure to complete the cut. If a piece of pipe isunusually tough, score the pipe 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:
