ASTM F1970-2012 Standard Specification for Special Engineered Fittings Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Sy.pdf

1、Designation: F1970 05 F1970 12 An 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 F1970; the number im

2、mediately 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 () indicates an editorial change since the last revision or reapproval.1. Scope Scope

3、*1.1 This specification covers fittings, appurtenances and valves which are to be used with pipe and tubing complying withSpecifications D1785, D2241, D2846/D2846M, F441/F441M or F442/F442M, or other piping as specified by the fittingsmanufacturer. These products, such as unions, flanges or valves,

4、are not included in the scope of existing ASTM specifications.This specification includes minimum requirements for testing, materials, dimensions, workmanship, marking, and in-plant qualitycontrol.1.2 Fittings or appurtenances covered by this specification are generally either molded, fabricated, or

5、 assembled from moldedor machined components. The materials used in components include rigid thermoplastics, thermoplastic elastomers, elastomerics,and metals. The body or main portion of the fitting, appurtenance or valve is typically PVC, CPVC, PE or PA (nylon). All productscovered by this standar

6、d are intended to be used in PVC or CPVC plastic piping systems, or as a transition from these to metalsystems.1.3 The application of these products to gas service is beyond the scope of this specification.1.4 The products covered by this specification are intended for use with the distribution of p

7、ressurized liquids only, which arechemically compatible with the piping materials. Due to inherent hazards associated with testing components and systems withcompressed air or other compressed gases some manufacturers do not allow pneumatic testing of their products. Consult withspecific product/com

8、ponent manufacturers for their specific testing procedures prior to pneumatic testing.NOTE 1Warning: Pressurized (compressed) air or other compressed gases contain large amounts of stored energy which present serious safety whichpresent serious safety hazards should a system fail for any reason.1.5

9、Fittings which rely on heat fusion welding for connection to the piping system are outside the scope of this specification.1.6 Check valves (including foot valves) covered by this specification shall not be considered backflow prevention devices andshall not be used for the protection of a potable w

10、ater supply. For definitions and requirements of backflow prevention devices,consult model plumbing codes and ASSE.21.7 Due to the complex and installation-specific concerns surrounding chemical resistance and corrosion, this specification doesnot address the compatibility of the products with all p

11、ossible end-use environments. Additional testing specific to the end-useenvironment is recommended if the system is conveying liquids other than potable water.1.8 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are given forinformation only

12、.1.9 The following safety caveat applies only to the test methods and in-plant quality control portions, section of thisspecification:This standard does not purport to address all of the safety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establi

13、sh appropriate safety and health practices and determine the applicability ofregulatory limitations prior to use.1 This specification is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.10Current edition approved Aug. 1, 2005

14、Nov. 1, 2012. Published August 2005.December 2012. Originally approved in 1999. Last previous edition approved in 20012005as F197001.F197005. DOI: 10.1520/F1970-05.10.1520/F1970-12.2 American Society of Sanitary Engineering, 28901 Clemens Rd., Suite 100, Westlake, OH 44145.This document is not an AS

15、TM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In a

16、ll cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12. Refere

17、nced Documents2.1 ASTM Standards:3D1598 Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal PressureD1599 Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and FittingsD1600 Terminology for Abbreviated Terms Relating to PlasticsD1784 Specificati

18、on for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC)CompoundsD1785 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120D1898 Practice for Sampling of Plastics (Withdrawn 1998)4D2000 Classification System for Rubber Products in

19、Automotive ApplicationsD2122 Test Method for Determining Dimensions of Thermoplastic Pipe and FittingsD2241 Specification for Poly(Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)D2466 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40D2467 Specification for Poly(V

20、inyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80D2846/D2846M Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution SystemsD3350 Specification for Polyethylene Plastics Pipe and Fittings MaterialsD4066 Classification System for Nylon Injection and E

21、xtrusion Materials (PA) (Withdrawn 2012)4F412 Terminology Relating to Plastic Piping SystemsF438 Specification for Socket-Type Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40F439 Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80F

22、441/F441M Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80F442/F442M Specification for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe (SDRPR)F477 Specification for Elastomeric Seals (Gaskets) for Joining Plastic PipeF1498 Specification for Taper Pipe

23、Threads 60 for Thermoplastic Pipe and Fittings2.2 ASME Standards:B1.20.1 Pipe Threads, General Purpose (Inch)4B16.5 Pipe Flanges and Flanged Fittings42.3 NSF Standards:NSF 14 Plastics Piping Components and Related Materials5NSF 61 Drinking Water System Components - Health Effects52.4 ISA Standard:IS

24、A S75.02 Control Valve Capacity Test Procedure62.5 ASQ Standard:ANSI/ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes73. Terminology3.1 GeneralDefinitions are in accordance with the Definitions in F412 and abbreviations are in accordance with D1600 unlessotherwise specified.3.2 D

25、efinitions of Terms Specific to This Standard:3.2.1 activation pressurethe activation pressure of a check valve is that inlet pressure, exceeding the outlet pressure, requiredto open the check valve and allow water to flow.3.2.2 appurtenancesaccessories of a plastic piping system designed for specia

26、l applications or end-uses. Appurtenances mayinclude, but are not limited to pipes, fittings, valves, storage tanks, mechanical devices and expansion tanks.3.2.3 connectionsthe portion of the fitting intended to join the fitting with the rest of the piping system (see 5.1).3.2.4 CTSabbreviation for

27、“copper tube size”, indicating an outside-diameter controlled tubing with outside diameterdimensions meeting the tube specifications given in Specification D2846/D2846M.3.2.5 IPSabbreviation for “iron pipe size”, indicating an outside-diameter controlled tubing with outside diameter dimensionsmeetin

28、g the requirements of schedule 40 pipe (see Specification D1785 for dimensions of schedule 40 pipe).3.2.6 lot sizethe total number of completely finished fittings or appurtenances that are manufactured under conditions ofproduction that are considered uniform.3 For referenced ASTM standards, visit t

29、he ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters,

30、 Three Park Ave., New York, NY 10016-5990.5 NSF International, P.O. Box 130140, Ann Arbor, MI 48113-0140.6 Instrument Society of America, 67 Alexander Drive, Research Triangle Park, NC 27709.7 American Society for Quality, 611 East Wisconsin Ave., Milwaukee, WI 53201-3005.F1970 1223.2.7 referee test

31、testing conducted to compare performance of the product against all requirements of this specification.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 the

32、 initial seal,shall comply with the requirements of Specification F477, Table 1 for thermoset, Table 2 for thermoplastic.4.2 All other elastomeric seals shall be designed to meet the product performance requirements stated within this document andbe specified in accordance with Classification D2000.

33、4.3 Materials used in components which provide structural integrity of the fitting or appurtenance shall meet the requirementsof 4.3.1, 4.3.2, 4.3.3or 4.4.NOTE 2Components which provide structural integrity include the body; connections such as sockets, compression joint components, saddles, andflan

34、ges.4.3.1 PVC materials shall meet the minimum requirements for a cell-classification of 12454, 13354, 11443 or 14333 as definedby Specification D1784.4.3.2 CPVC materials shall meet the minimum requirements for a cell-classification of 23447 or 23448 as defined inSpecification D1784.4.3.3 Polyamide

35、 (nylon) materials shall meet the minimum requirements for a cell-classification of PA0110, PA0120, PA0210or PA0220 and shall meet the detail requirements given in Table A or B for classifications A2242 or B4544, as defined inClassification D4066.4.3.4 Polyethylene (PE) materials shall meet the mini

36、mum requirements for a cell classification of 213333 (PE2406, PE3406or PE3408) as defined in Specification D3350.4.4 Rework Material The manufacturers shall use only their own clean rework fitting material and the fittings produced shallmeet the requirements of this specification. Materials containi

37、ng contaminants from other base materials or elastomerics shall notbe used in the manufacture of fittings or appurtenances under this specification.5. Requirements5.1 Dimensions:5.1.1 Seal Dimensions Seal dimensions shall be in accordance with the manufacturers standard design dimensions andtoleranc

38、es. The seal shall be designed to provide an adequate compressive force against the mating parts after assembly to effecta positive seal under all combinations of permitted fitting and seal tolerances.5.1.2 Solvent-Weld ConnectionsSockets shall comply with the fittings dimensions applicable to the s

39、ize of pipe being joined.Dimensioning of sockets shall be conducted in accordance with 8.2.5.1.2.1 Socket connections for solvent-weld to IPS pipe shall comply with the socket dimensions given in Specification D2467for Sch 80 PVC, Specification D2466 for Sch 40 PVC, Specification F439 for Sch 80 CPV

40、C or Specification F438 for Sch 40CPVC.5.1.2.2 Socket connections for solvent-weld to CTS pipe shall comply with the socket dimensions given in D2846/D2846M.5.1.3 Threaded ConnectionsFor all thermoplastic components having taper pipe threads, thermoplastic threads shall conformto Specification F1498

41、 and be gaged in accordance with 8.2.2. The tolerance on thermoplastic threads, when measured using gages,shall be 61.5 turns. For all metallic components having taper pipe threads, threads shall conform to ANSI/ASME B1.20.1. Thetolerance on metallic threads when measured using gages shall be 61 tur

42、n.5.1.4 Flange ConnectionsFlanges and flange-connections on assemblies shall meet the bolt-pattern requirements ofANSI/ASME B16.5.5.1.5 Spigot ConnectionsSpigot ends of fittings shall meet the requirements for average outside diameter, out-of-roundnessand minimum wall thickness of the corresponding

43、pipe.5.1.6 Other dimensions shall be in accordance with the manufacturers standard dimensions and tolerances.5.2 Internal Pressure TestsFittings shall meet the minimum requirements for resistance to hydrostatic pressure when testedin accordance with 8.2.5.2.1 ValvesValves shall be tested in both the

44、 open (shell test) and shut-off (seat test) configurations for compliance with thissection. Valves without a specified flow direction shall be tested in shut-off position from each possible flow direction. Foroperating (test) temperatures above 145F (63C), the 1000-h test on the valves shall be cond

45、ucted only in the open (shell test)configuration.5.2.2 Blind Flanges Blind flanges shall be tested in addition 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 pres

46、sure drop across the valveshall not exceed the manufacturers published values at 25, 50, 75 and 100 % of maximum flow. The maximum flow rate shall beF1970 123either as specified by the manufacturer, or the flow achieved with 80 psig (550 kPa) inlet (at no flow condition) pressure and pipeof the same

47、 nominal size as the valve. For valves with more than one flow direction, testing shall be conducted in each flowconfiguration.5.3.2 Leakage Through Reverse Direction of ValvesThis requirement is applicable to valves with a specified flow direction,and check valves. The reverse flow rate (leakage, L

48、) through the valve shall not exceed 0.01 % of the flow that would exist if thevalve were not installed (F), when tested in accordance with 8.5. That is, L shall be less than or equal to 0.0001(F), or alternatively,the leakage percentage, P, shall be less than or equal to 0.01 %.5.3.3 Activation Pre

49、ssure of Check ValvesThe activation pressure of check valves shall be within6 5 % or 6 2 in. (mm)water column of the manufacturers published value, whichever is greater, when tested in accordance with 8.6.5.4 Joint Tightness Fittings utilizing push-on joints with elastomeric seals shall not leak or fail when tested in accordance with8.3.6. Workmanship, 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 a