ASTM C1541-2012(2017) Standard Specification for Shielded Transition Couplings Using Flexible Polyvinyl Chloride (PVC) Gaskets to Connect Dissimilar DWV Pipe and Fittings《利用柔性聚氯乙烯(.pdf
《ASTM C1541-2012(2017) Standard Specification for Shielded Transition Couplings Using Flexible Polyvinyl Chloride (PVC) Gaskets to Connect Dissimilar DWV Pipe and Fittings《利用柔性聚氯乙烯(.pdf》由会员分享,可在线阅读,更多相关《ASTM C1541-2012(2017) Standard Specification for Shielded Transition Couplings Using Flexible Polyvinyl Chloride (PVC) Gaskets to Connect Dissimilar DWV Pipe and Fittings《利用柔性聚氯乙烯(.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1541 12 (Reapproved 2017)Standard Specification forShielded Transition Couplings Using Flexible PolyvinylChloride (PVC) Gaskets to Connect Dissimilar DWV Pipeand Fittings1This standard is issued under the fixed designation C1541; the number immediately following the designation indicat
2、es the year oforiginal adoption or, in the case of revision, 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 performance of
3、shieldedtransition couplings using flexible PVC gaskets to join dissimi-lar DWV pipe and fittings above and below ground up to andincluding 10-in. pipe and fittings.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to
4、 SI units that are provided for information onlyand are not considered standard.1.3 The committee with jurisdiction over this standard is notaware of any comparable standards of any other organization.1.4 The following precaution pertains only to the testmethod portion, Sections 7 and 8 of this spec
5、ification. 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, health, andenvironmental practices and determine the applicability ofregulatory limitations prior to u
6、se.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers
7、 to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A493 Specification for Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA644 Terminology Relating to Iron CastingsD5926 Specification for Poly (Vinyl Chloride) (PVC) Gas-kets for Drain, Waste, and Vent (DWV), Sewe
8、r, Sanitary,and Storm Plumbing Systems3. Terminology3.1 Definitions:3.1.1 Definitions of the following terms used in this speci-fication are found in Terminology A644.3.2 Definitions of Terms Specific to This Standard:3.2.1 center stop, nan integral part of the gasket centeredon the axial length of
9、the gasket intended to limit the insertiondepth of the pipe to be coupled.3.2.2 clamp assembly, nthat portion of the coupling ex-cluding the gasket.3.2.3 coupling, nthe complete assembly.3.2.4 dissimilar DWV pipe and fittings, npipe and fittingsmade of different materials or different outside diamet
10、ers, orboth.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.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 metallic protective
11、 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 flexible PVC (polyvinyl chloride)gaskets shall comply with Specification D5926. The gasketsshall be permitted to be spliced or
12、 molded.4.2 All steel parts shall be 300 series stainless steel meetingthe requirements of Specification A493, excluding copper-bearing alloys.5. Requirements5.1 Couplings shall be supported with suitable hangers orsupport necessary to support the pipe, fitting, and contents. Thesupport must be loca
13、ted within 18 in. of the center of thecoupling.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.Current edition approved Oct. 1, 2017. Published October 201
14、7. Originallyapproved in 2002. Last previous edition approved in 2012 as C1541 12. DOI:10.1520/C1541-12R17.2For 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 stand
15、ards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Deci
16、sion on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15.2 The coupling shall not be installed in a location wherethe expected internal or external temperatures are below 30 F(34
17、 C) or exceed 130 F (54 C).5.3 Couplings shall not be installed in construction that hasa fire rating that restricts the use of flammable materialsthrough penetrations or plenums without additional fire-resistive protection.6. Elastomeric Gasket Requirements6.1 The elastomeric gasket shall consist o
18、f one piece con-forming to the physical requirements of 4.1.6.2 The elastomeric gasket shall have an inside centerstop-ring spaced an equal distance from the ends to serve as astop between the pipe/fitting ends. The center stop ring shallnot create an enlargement chamber or recess with a ledge,shoul
19、der, or reduction of pipe area or offer an obstruction toflow. A gasket without an inside center stop shall be permittedin tubular transition applications.6.3 The elastomeric gasket shall be free from imperfectionsand porosity that affects its use and serviceability.7. Clamp Assembly Requirements7.1
20、 Stainless steel tension bands shall be tested to withstand125 % of the manufacturers installation torque or a minimumof 60 in.-lbf of applied torque, whichever is greater withoutvisible signs of failure. The band shall be tested over a steelmandrel of the appropriate coupling diameter and torque as
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