ASTM F1970-2005 Standard Specification for Special Engineered Fittings Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Sy.pdf

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1、Designation: F 1970 05An American National StandardStandard Specification forSpecial Engineered Fittings, Appurtenances or Valves foruse in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (VinylChloride) (CPVC) Systems1This standard is issued under the fixed designation F 1970; the number immediatel

2、y following the designation indicates 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This spec

3、ification covers fittings, appurtenances andvalves which are to be used with pipe and tubing complyingwith Specifications D 1785, D 2241, D 2846, F 441 or F 442,or other piping as specified by the fittings manufacturer. Theseproducts, such as unions, flanges or valves, are not included inthe scope o

4、f existing ASTM specifications. This specificationincludes minimum requirements for testing, materials, dimen-sions, workmanship, marking, and in-plant quality control.1.2 Fittings or appurtenances covered by this specificationare generally either molded, fabricated, or assembled frommolded or machi

5、ned components. The materials used incomponents include rigid thermoplastics, thermoplastic elas-tomers, elastomerics, and metals. The body or main portion ofthe fitting, appurtenance or valve is typically PVC, CPVC, PEor PA (nylon). All products covered by this standard areintended to be used in PV

6、C or CPVC plastic piping systems, oras a transition from these to metal systems.1.3 The application of these products to gas service isbeyond the scope of this specification.1.4 The products covered by this specification are intendedfor use with the distribution of pressurized liquids only, whichare

7、 chemically compatible with the piping materials. Due toinherent hazards associated with testing components and sys-tems with compressed air or other compressed gases somemanufacturers do not allow pneumatic testing of their products.Consult with specific product/component manufacturers fortheir spe

8、cific testing procedures prior to pneumatic testing.NOTE 1Warning: Pressurized (compressed) air or other compressedgases contain large amounts of stored energy which present serious safetywhich present serious safety hazards should a system fail for any reason.1.5 Fittings which rely on heat fusion

9、welding for connec-tion to the piping system are outside the scope of thisspecification.1.6 Check valves (including foot valves) covered by thisspecification shall not be considered backflow preventiondevices and shall not be used for the protection of a potablewater supply. For definitions and requ

10、irements of backflowprevention devices, consult model plumbing codes andASSE.21.7 Due to the complex and installation-specific concernssurrounding chemical resistance and corrosion, this specifica-tion does not address the compatibility of the products with allpossible end-use environments. Addition

11、al testing specific tothe end-use environment is recommended if the system isconveying liquids other than potable water.1.8 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are given forinformation only.1.9 The following safety caveat applies

12、 only to the testmethods and in-plant quality control portions, section of thisspecification: This standard does not purport to address all ofthe safety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practic

13、es and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3D 1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD 1599 Test Method for Resistance to Short-Time Hydrau-lic Pressure of Plastic Pipe, Tubing, and

14、 FittingsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 1784 Specification for Rigid Poly(Vinyl Chloride) (PVC)Compounds and Chlorinated Poly(Vinyl Chloride)(CPVC) CompoundsD 1785 Specification for Poly(Vinyl Chloride) (PVC) Plas-tic Pipe, Schedules 40, 80, and 120D 1898 Practice for

15、Sampling of Plastics41This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings.Current edition approved August 1, 2005. Published August 2005. Originallyapproved in 1999. Last previous edition appr

16、oved in 2001 as F197001.2American Society of Sanitary Engineering, 28901 Clemens Rd., Suite 100,Westlake, OH 44145.3For 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 t

17、he standards Document Summary page onthe ASTM website.4Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 2000 Classification System for Rubber Products in Auto-motive ApplicationsD 2122 Test Method for Determining Dimension

18、s of Ther-moplastic Pipe and FittingsD 2241 Specification for Poly(Vinyl Chloride) (PVC)Pressure-Rated Pipe (SDR Series)D 2466 Specification for Poly(Vinyl Chloride) (PVC) Plas-tic Pipe Fittings, Schedule 40D 2467 Specification for Poly(Vinyl Chloride) (PVC) Plas-tic Pipe Fittings, Schedule 80D 2846

19、 Specification for Chlorinated Poly(Vinyl Chloride)(CPVC) Plastic Hot-and-Cold-Water Distribution SystemsD 3350 Specification for Polyethylene Plastics Pipe andFittings MaterialsD 4066 Classification System for Nylon Injection and Ex-trusion Materials (PA)F 412 Terminology Relating to Plastic Piping

20、 SystemsF 438 Specification for Socket-Type Chlorinated Poly(Vi-nyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40F 439 Specification for Socket-Type Chlorinated Poly(Vi-nyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80F 441/F 441M Specification for Chlorinated Poly(VinylChloride) (CPVC)

21、Plastic Pipe, Schedules 40 and 80F 442/F 442M Specification for Chlorinated Poly(VinylChloride) (CPVC) Plastic Pipe (SDR-PR)F 477 Specification for Elastomeric Seals (Gaskets) forJoining Plastic PipeF 1498 Specification for Taper Pipe Threads 60 for Ther-moplastic Pipe and Fittings2.2 ASME Standards

22、:B1.20.1 Pipe Threads, General Purpose (Inch)5B16.5 Pipe Flanges and Flanged Fittings52.3 NSF Standards:NSF 14 Plastics Piping Components and Related Materials6NSF 61 Drinking Water System Components - HealthEffects62.4 ISA Standard:ISA S75.02 Control Valve Capacity Test Procedure72.5 ASQ Standard:A

23、NSI/ASQ Z1.4 Sampling Procedures and Tables for In-spection by Attributes83. Terminology3.1 GeneralDefinitions are in accordance with the Defi-nitions in F 412 and abbreviations are in accordance withD 1600 unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 activatio

24、n pressurethe activation pressure of acheck valve is that inlet pressure, exceeding the outlet pressure,required to open the check valve and allow water to flow.3.2.2 appurtenancesaccessories of a plastic piping systemdesigned for special applications or end-uses. Appurtenancesmay include, but are n

25、ot limited to pipes, fittings, valves,storage tanks, mechanical devices and expansion tanks.3.2.3 connectionsthe portion of the fitting intended to jointhe fitting with the rest of the piping system (see 5.1).3.2.4 CTSabbreviation for “copper tube size”, indicatingan outside-diameter controlled tubi

26、ng with outside diameterdimensions meeting the tube specifications given in Specifica-tion D 2846.3.2.5 IPSabbreviation for “iron pipe size”, indicating anoutside-diameter controlled tubing with outside diameter di-mensions meeting the requirements of schedule 40 pipe (seeSpecification D 1785 for di

27、mensions of schedule 40 pipe).3.2.6 lot sizethe total number of completely finishedfittings or appurtenances that are manufactured under condi-tions of production that are considered uniform.3.2.7 referee testtesting conducted to compare perfor-mance of the product against all requirements of this s

28、pecifi-cation. In-plant QC testing is not considered referee testing.4. Materials and Manufacture4.1 The elastomeric seals designed for push-on joints,which require no internal or external pressure to effect theinitial seal, shall comply with the requirements of SpecificationF 477, Table 1 for therm

29、oset, Table 2 for thermoplastic.4.2 All other elastomeric seals shall be designed to meet theproduct performance requirements stated within this documentand be specified in accordance with Classification D 2000.4.3 Materials used in components which provide structuralintegrity of the fitting or appu

30、rtenance shall meet the require-ments of 4.3.1, 4.3.2, 4.3.3 or 4.4.NOTE 2Components which provide structural integrity include thebody; connections such as sockets, compression joint components,saddles, and flanges.4.3.1 PVC materials shall meet the minimum requirementsfor a cell-classification of

31、12454, 13354, 11443 or 14333 asdefined by Specification D 1784.4.3.2 CPVC materials shall meet the minimum require-ments for a cell-classification of 23447 or 23448 as defined inSpecification D 1784.4.3.3 Polyamide (nylon) materials shall meet the minimumrequirements for a cell-classification of PA0

32、110, PA0120,PA0210 or PA0220 and shall meet the detail requirementsgiven in Table A or B for classifications A2242 or B4544, asdefined in Classification D 4066.4.3.4 Polyethylene (PE) materials shall meet the minimumrequirements for a cell classification of 213333 (PE2406,PE3406 or PE3408) as define

33、d in Specification D 3350.4.4 Rework MaterialThe manufacturers shall use onlytheir own clean rework fitting material and the fittings pro-duced shall meet the requirements of this specification. Mate-rials containing contaminants from other base materials orelastomerics shall not be used in the manu

34、facture of fittings orappurtenances under this specification.5. Requirements5.1 Dimensions:5.1.1 Seal DimensionsSeal dimensions shall be in accor-dance with the manufacturers standard design dimensions and5Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters

35、, Three Park Ave., New York, NY 10016-5990.6NSF International, P.O. Box 130140, Ann Arbor, MI 48113-0140.7Instrument Society of America, 67 Alexander Drive, Research Triangle Park,NC 27709.8American Society for Quality, 611 East Wisconsin Ave., Milwaukee, WI53201-3005.F1970052tolerances. The seal sh

36、all be designed to provide an adequatecompressive force against the mating parts after assembly toeffect a positive seal under all combinations of permitted fittingand seal tolerances.5.1.2 Solvent-Weld ConnectionsSockets shall complywith the fittings dimensions applicable to the size of pipe beingj

37、oined. Dimensioning of sockets shall be conducted in accor-dance with 8.2.5.1.2.1 Socket connections for solvent-weld to IPS pipeshall comply with the socket dimensions given in SpecificationD 2467 for Sch 80 PVC, Specification D 2466 for Sch 40 PVC,Specification F 439 for Sch 80 CPVC or Specificati

38、on F 438for Sch 40 CPVC.5.1.2.2 Socket connections for solvent-weld to CTS pipeshall comply with the socket dimensions given in D 2846.5.1.3 Threaded ConnectionsFor all thermoplastic compo-nents having taper pipe threads, thermoplastic threads shallconform to Specification F 1498 and be gaged in acc

39、ordancewith 8.2.2. The tolerance on thermoplastic threads, whenmeasured using gages, shall be 61.5 turns. For all metalliccomponents having taper pipe threads, threads shall conform toANSI/ASME B1.20.1. The tolerance on metallic threads whenmeasured using gages shall be 61 turn.5.1.4 Flange Connecti

40、onsFlanges and flange-connectionson assemblies shall meet the bolt-pattern requirements ofANSI/ASME B16.5.5.1.5 Spigot ConnectionsSpigot ends of fittings shallmeet the requirements for average outside diameter, out-of-roundness and minimum wall thickness of the correspondingpipe.5.1.6 Other dimensio

41、ns shall be in accordance with themanufacturers standard dimensions and tolerances.5.2 Internal Pressure TestsFittings shall meet the mini-mum requirements for resistance to hydrostatic pressure whentested in accordance with 8.2.5.2.1 ValvesValves shall be tested in both the open (shelltest) and shu

42、t-off (seat test) configurations for compliance withthis section. Valves without a specified flow direction shall betested in shut-off position from each possible flow direction.For operating (test) temperatures above 145F (63C), the1000-h test on the valves shall be conducted only in the open(shell

43、 test) configuration.5.2.2 Blind FlangesBlind flanges shall be tested in addi-tion to any other flange configurations for compliance with thissection.5.3 Valves and Check Valves:5.3.1 Pressure Drop Across Valves and Check ValvesWhen tested in accordance with 8.4, the pressure drop acrossthe valve sh

44、all not exceed the manufacturers published valuesat 25, 50, 75 and 100 % of maximum flow. The maximum flowrate shall be either as specified by the manufacturer, or the flowachieved with 80 psig (550 kPa) inlet (at no flow condition)pressure and pipe of the same nominal size as the valve. Forvalves w

45、ith more than one flow direction, testing shall beconducted in each flow configuration.5.3.2 Leakage Through Reverse Direction of ValvesThisrequirement is applicable to valves with a specified flowdirection, and check valves. The reverse flow rate (leakage, L)through the valve shall not exceed 0.01

46、% of the flow thatwould exist if the valve were not installed (F), when tested inaccordance with 8.5. That is, L shall be less than or equal to0.0001(F), or alternatively, the leakage percentage, P, shall beless than or equal to 0.01 %.5.3.3 Activation Pressure of Check ValvesThe activationpressure

47、of check valves shall be within6 5%or6 2 in. (mm)water column of the manufacturers published value, which-ever is greater, when tested in accordance with 8.6.5.4 Joint TightnessFittings utilizing push-on joints withelastomeric seals shall not leak or fail when tested in accor-dance with 8.3.6. Workm

48、anship, Finish and Appearance6.1 The requirements of this section are verified by visual(non-magnified) inspection of the components and surfaces.6.2 All surfaces of the fitting or assembly against which aseal may rest shall be free of imperfections that could adverselyaffect the performance of the

49、fitting or assembly.6.3 The surfaces of all thermoplastic and metallic compo-nents shall be free from defects which will adversely affect theperformance and service of the fitting or assembly.6.4 The thermoplastic materials, after molding or fabrica-tion, shall be as uniform as commercially practical in color andopacity.7. Sample Conditioning7.1 For referee testing, all samples shall be conditioned at73 6 3.6F (23 6 2C) for not less than 40 hours immediatelypreceding testing.7.2 For in-plant quality control testing purposes, samplesshall be conditioned a