ASTM F1974-2008 Standard Specification for Metal Insert Fittings for Polyethylene Aluminum Polyethylene and Crosslinked Polyethylene Aluminum Crosslinked Polyethylene Composite Pre.pdf

1、Designation: F 1974 08An American National StandardStandard Specification forMetal Insert Fittings for Polyethylene/Aluminum/Polyethylene and Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Composite Pressure Pipe1This standard is issued under the fixed designation F 1974; the number imme

2、diately 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*1.1 Thi

3、s specification covers metal insert fittings with splitring and compression nut (compression joint) and metal insertfittings with copper crimp rings (crimp joint) for four sizes ofcomposite pressure pipe. These fittings are intended for use in125 psi (690 kPa) cold- and hot-water distribution system

4、soperating at temperatures up to and including 180 F (82 C).(When used in polyethylene/aluminum/polyethylene systemsthe maximum operating temperature is limited by the pipe to140 F (60 C) and where applicable 180F (82C). Includedare the requirements for materials, workmanship, burst pres-sure, susta

5、ined pressure, excessive temperature and pressure,temperature cycling tests, and markings to be used on thefittings and rings. The fittings covered by this specification areintended for use in potable water distribution systems forresidential and commercial applications, water service, under-ground

6、irrigation systems, and radient panel heating systems,baseboard, snow- and ice-melt systems, and gases that arecompatible with the composite 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 SI un

7、its that are provided for information onlyand are not considered standard.NOTE 1The tables show the “nominal size” in millimetres with theinch size in parentheses. This exception is made to harmonize the“nominal size” with the two pipe standards, F 1281 and F 1282.1.3 The following precautionary cav

8、eat pertains only to thetest method portion, Section 9, 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 t

9、he applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2B 16/B 16M Specification for Free-Cutting Brass Rod, Barand Shapes for Use in Screw MachinesB 36/B 36M Specification for Brass Plate, Sheet, Strip, AndRolled BarB62 Specification for Composition Bronz

10、e or Ounce MetalCastingsB75 Specification for Seamless Copper TubeB 134/B 134M Specification for Brass WireB 140/B 140M Specification for Copper-Zinc-Lead (RedBrass or Hardware Bronze) Rod, Bar, and ShapesB 159/B 159M Specification for Phosphor Bronze WireB 283 Specification for Copper and Copper-Al

11、loy Die Forg-ings (Hot-Pressed)B 371/B 371M Specification for Copper-Zinc-Silicon AlloyRodB 584 Specification for Copper Alloy Sand Castings forGeneral ApplicationsD 618 Practice for Conditioning Plastics for TestingD 1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal Pressu

12、reD 1599 Test Method for Resistance to Short-Time Hydrau-lic Pressure of Plastic Pipe, Tubing, and FittingsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD 2240 Test Method for Rubber PropertyDurometerHardn

13、essE18 Test Methods for Rockwell Hardness of MetallicMaterialsF 412 Terminology Relating to Plastic Piping Systems1This 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

14、Nov. 1, 2008. Published November 2008. Originallyapproved in 1999. Last previous edition approved in 2004 as F 1974 - 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, refe

15、r to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.F 1281 Specification for Crosslinked Polyethylene/Aluminum/

16、Crosslinked Polyethylene (PEX-AL-PEX)Pressure PipeF 1282 Specification for Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Composite Pressure Pipe2.2 ANSI Standards:B1.20.1 Pipe Threads General Purpose (Inch)3B16.18 Cast Copper Alloy Solder Joint Pressure Fittings3B16.22 Wrought Copper and Copper Allo

17、y Solder JointPressure Fittings32.3 Manufacturers Standardization Society Standard:SP-104 Wrought Copper LW Solder Joint Pressure Fittings42.4 National Sanitation Foundation Standards:Standard No. 14 for Plastic Piping Components and RelatedMaterials4Standard No. 61 for Drinking Water System Compone

18、nts -Health Effects43. Terminology3.1 Definitions are in accordance with Terminology F 412and abbreviations are in accordance with Terminology D 1600,unless otherwise indicated.4. Classification4.1 This specification covers two classes of fittings, fittingswith split ring and compression nut and fit

19、tings with a coppercrimp ring, suitable for use with four sizes of PEX/AL/PEX orPE/AL/PE pipe that meets the requirements of SpecificationsF 1281 and F 1282 respectively.5. Materials and Manufacture5.1 FittingsThe fittings shall be made from one of thefollowing metals.5.1.1 Wrought Copper FittingsWr

20、ought copper fittingsshall be made from material meeting the requirements ofSpecification B75for one of the following coppers: copperUNS Nos. C10200, C10300, C10800, C12000, or C12200.5.1.2 Cast Copper Alloy FittingsCast copper alloy fittingsshall be made from material meeting the requirements ofSpe

21、cification B 584, copper alloy UNS C84400, C85700,C85710, or Specification B62, copper alloy UNS C83600.When fittings are assembled with copper insert fittings, theinsert fittings shall comply with 5.1.1.5.1.3 Cast Copper Alloy ValvesCast copper alloy valvesshall be made from material meeting the re

22、quirements ofSpecification B62copper alloy UNS No. C83600 or Specifi-cation B 584 copper alloy UNS Nos. C83800, C87850, orC84400. When valves are assembled with copper insert fit-tings, the insert fittings shall comply with 5.1.1.5.1.4 Machined Brass FittingsMachined brass fittingsshall be made from

23、 material meeting the requirements ofSpecification B 140/B 140M copper alloy UNS No. C31400, orSpecification B 16/B 16M, copper alloy UNS No. C36000, orSpecification B62, copper alloy UNS No.C83600 or Specifi-cation B 36/B 36M, copper alloy UNS No. C23000, orSpecification B 371/B 371M, copper alloy

24、UNS No. C69300.5.1.5 Forged Brass FittingsForged brass fittings shall bemade from material meeting the requirements of SpecificationB 283, copper alloy UNS No. C37700 or Specification B 124,Alloy UNS No. C37700.5.2 Crimp RingsCrimp rings shall be made from copperUNS Nos. C10200, C12000, or C12200. T

25、he crimp rings shallhave a minimum allowable hardness of 35 and a maximumallowable hardness of 45 on the Rockwell 15T scale whenmeasured according to Test Methods E18.5.3 Split RingsSplit rings shall be made from materialmeeting the requirements of Specification B 140/B 140M cop-per alloy UNS No. C3

26、1400, or Specification B 16/B 16Mcopper alloy UNS No. C36000, or Specification B 159/B 159Mcopper alloy UNS No. C51000 or Specification B 134/B134M,UNS No. C27000.5.4 The O-rings used on the brass fittings to make a staticseal shall be manufactured from ethylene propylene rubber(EPDM) or silicone ru

27、bber (Si), with a Shore A durometerbetween 60 and 70 when tested in accordance with ASTMStandard D 2240.6. Performance Requirements6.1 GeneralAll performance tests shall be performed onassemblies of fittings and PEX/AL/PEX pipe. Fittings, splitrings and crimp rings shall meet the material and dimens

28、ionalrequirements of this standard. PEX/AL/PEX pipe shall meetthe requirements of Specification F 1281. Assembly of testspecimens shall be in accordance with either 8.1 or 8.2,asapplicable. Each assembly shall contain at least one joint. Useseparate sets of assemblies for each performance test requi

29、re-ment.6.2 Hydrostatic BurstAssemblies shall meet the mini-mum hydrostatic burst requirements shown in Table 1 whentested in accordance with 9.5.6.3 Hydrostatic Sustained Pressure StrengthPipe and fit-ting assemblies shall not separate or leak when tested inaccordance with 9.6.6.4 ThermocyclingAsse

30、mblies shall not leak or separatewhen thermocycled 1000 cycles between the temperatures of60 F (16 C) and 180 F (82 C) in accordance with 9.7.6.5 Excessive Temperature-Pressure CapabilityAssemblies shall not leak or separate when tested in accor-dance with 9.8.3Available from American National Stand

31、ards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, MI 48113-0140, http:/www.nsf.org.TABLE 1 Minimum Hydrostatic Burst Strength Requirements forFitting and PEX/AL/PEX Pipe Assemblies

32、Nominal Pipe Size,mm (in.)Minimum Burst Pressuresat Different Temperaturespsi at73.4 F(kPa at23 C)psi at180 F(kPa at82.2 C)1216 (12) 870 (6 000) 580 (4 000)1620 (58) 725 (5 000) 550 (3 800)2025 (34) 580 (4 000) 465 (3 200)2532 (1) 580 (4 000) 465 (3 200)F19740827. Dimensions7.1 Dimensions and Tolera

33、ncesThe dimensions and tol-erances of fittings, split rings and crimp rings shall be as shownin Tables 2-4 when measured in accordance with 9.4.7.1.1 AlignmentThe maximum angular variation of anyopening shall not exceed 1 off the true centerline axis.7.1.2 Fittings with Solder Joint EndsSolder joint

34、 endsshall be in accordance with ANSI B16.22, ANSI B16.18,orMSS SP-104.7.1.3 Tapered Threaded EndsFitting threads shall beright-hand conforming to ANSI/ASME B1.20.1. They shall betaper threads (NPT).8. Workmanship, Finish and Appearance8.1 The sealing surfaces of the insert shall be smooth andfree o

35、f foreign material. The fitting walls shall be free ofcracks, holes, blisters, voids, foreign inclusions or other defectsthat are visible to the naked eye and that affect the wallintegrity.8.1.1 AssemblyInsert fittings shall be joined to PE/AL/PEor PEX/AL/PEX pipe by the use of either a crimp joint

36、or acompression joint.8.1.2 Crimp JointsCrimp insert fittings shall be joined toPE/AL/PE or PEX/AL/PEX pipe by the compression of acopper crimp ring around the outer circumference of the pipeforcing the pipe material into annular spaces formed by ribs onthe fitting. The dimensions and out-of-roundne

37、ss of the crimpring after it has been crimped shall be in accordance with Table5.8.1.2.1 Crimping ProcedureTo affix the insert fitting tothe pipe with the crimp ring, the crimping procedure shall be asfollows: slide the crimp ring onto the pipe, insert the ribbed endof the fitting into the end of th

38、e pipe until the pipe contacts theshoulder of the fitting or pipe stop. The crimp ring shall then bepositioned on the pipe so the edge of the crimp ring is18 to14in. (3.2 to 6.4 mm) from the end of the pipe. The jaws of thecrimping tool shall be centered over the crimp ring and the toolshall be held

39、 so that the crimping jaws are perpendicular to theaxis of the barb. The jaws of the crimping tool shall be closedaround the crimp ring, compressing the crimp ring onto thepipe. The crimp ring shall not be crimped more than once. Eachcrimp shall be checked to determine conformance to the aftercrimpe

40、d dimensional requirements of Table 5.8.2 Compression JointsCompression insert fittings shallbe joined to PE/AL/PE or PEX/AL/PEX pipe through thecompression of a split ring, by an compression nut, around theouter circumference of the pipe forcing the pipe material intothe annular space formed by rib

41、s on the fitting.TABLE 2 Crimp Joint Fitting DimensionsDimension 121612 in.162058 in.202534 in.25321in.A Male and female copper solder on NPT thread ends refer to clauses 7.1.2 and 7.1.3. This end of the fitting may also be a part of a coupling tee,90 elbow or other adapter.id 0.334 in.60.008 in.0.4

42、52 in.60.008 in.0.610 in.60.008 in.0.807 in.60.008 in.B1 0.591 in.60.025 in0.591 in.60.025 in0.591 in.60.025 in0.591 in.60.025 inB2 0.650 in.60.050 in0.650 in.60.050 in0.650 in.60.050 in0.650 in.60.050 inC 0.482 in.60.004 in.0.620 in.60.004 in.0.781 in.60.004 in.0.998 in.60.004 in.D(bottom of groove

43、)0.406 in.60.004 in.0.543 in.60.004 in.0.701 in.60.004 in.0.902 in.60.004 in.E 0.067 in.60.005 in.0.067 in.60.005 in.0.067 in.60.005 in.0.079 in.60.005 in.F 0.059 in.60.003 in.0.059 in.60.003 in.0.059 in.60.003 in.0.071 in.60.003 in.G 0.315 in.60.008 in.0.409 in.60.008 in0.567 in.60.008 in0.764 in.6

44、0.008 inF19740838.2.1 Compression Jointing ProcedureTo affix the insertfitting to the pipe with the split ring, and compression nut theprocedure shall be as follows: slide the compression nut andsplit ring onto the pipe, insert the ribbed end of the fitting intothe end of the pipe until the pipe con

45、tacts the shoulder of thefitting or pipe stop. Position and compress the split ring bytightening the compression nut onto the insert fitting.TABLE 3 Compression Joint Fitting DimensionsDimension 121612 in.162058 in.202534 in.25321in.A Male and Female copper solder on NPT thread ends refer to clauses

46、 7.1.2 and 7.1.3. This end of the fitting may also be a part of a coupling tee,90 elbow or other adapter.id 0.334 in.60.008 in.0.452 in.60.008 in.0.610 in.60.008 in.0.807 in.60.008 in.B 0.370 in.60.050 in.0.370 in.60.050 in.0.370 in.60.050 in.0.472 in.60.050 in.C 0.482 in.60.004 in.0.620 in.60.004 i

47、n.0.781 in.60.004 in.0.998 in.60.004 in.D 0.406 in.60.004 in.0.543 in.60.004 in.0.701 in.60.004 in.0.902 in.60.004 in.E 0.067 in.60.005 in.0.067 in.60.005 in.0.067 in.60.005 in.0.079 in.60.005 in.F 0.059 in.60.003 in.0.059 in.60.003 in.0.059 in.60.003 in.0.071 in.60.003 in.G 0.315 in.60.008 in.0.409

48、 in.60.008 in0.567 in.60.008 in0.764 in.60.008 inH 0.157 in.60.008 in.0.177 in.60.008 in.0.177 in.60.008 in.0.197 in.60.008 in.I 0.638 in.60.008 in.0.795 in.60.008 in.0.992 in.60.008 in.1.276 in.60.008 in.J 0.650 in.60.008 in.0.815 in.60.008 in.1.024 in.60.008 in.1.291 in.60.008 in.TABLE 4 Copper Cr

49、imp Ring DimensionsDimension 121612 in.162058 in.202534 in.25321in.AInside Diameter0.65260.0020.81260.0021.00960.0021.28460.002BWall Thickness0.05260.0020.05060.0021.04960.0021.04960.002CWidth0.39460.0200.39460.0200.39460.0200.39460.020F19740849. Test Methods9.1 ConditioningCondition specimens at 73 6 4F(2362 C) and 506 5 % relative humidity for not less than 4 h priorto testing. Use Test Method D 618 to the extent possible as aguide to other conditions.9.2 Test ConditionsConduct the tests in the standardlaboratory atmosph