1、Designation: F 493 04An American National StandardStandard Specification forSolvent Cements for Chlorinated Poly(Vinyl Chloride)(CPVC) Plastic Pipe and Fittings1This standard is issued under the fixed designation F 493; the number immediately following the designation indicates the year oforiginal a
2、doption 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.This standard has been approved for use by agencies of the Department of Defense
3、.1. Scope1.1 This specification provides requirements for chlorinatedpoly(vinyl chloride) (CPVC) solvent cements to be used injoining chlorinated poly(vinyl chloride) pipe, tubing, andsocket-type fittings.1.2 CPVC solvent cements are used with CPVC 41 chlori-nated poly(vinyl chloride) pipe, tubing,
4、and fittings, whichmeet Class 23447 as defined in Specification D 1784.1.3 A recommended procedure for joining CPVC pipe andfittings is given in Appendix X1.1.4 The text of this specification references notes, footnotes,and appendixes which provide explanatory material. Thesenotes and footnotes (exc
5、luding those in tables and figures) shallnot be considered as requirements of the specification.1.5 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.6 The following safety hazards caveat pertains only to thetest methods portio
6、n, Section 6, 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 the applicability of regulatory limita-tion
7、s prior to use.2. Referenced Documents2.1 ASTM Standards:2D 1084 Test Methods for Viscosity of AdhesivesD 1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD 1599 Test Method for Short-Time Hydraulic Failure Pres-sure of Plastic Pipe, Tubing, and FittingsD 1784 Spec
8、ification for Rigid Poly(Vinyl Chloride) (PVC)Compounds and Chlorinated Poly(Vinyl Chloride)(CPVC) CompoundsD 2846/D 2846M Specification for Chlorinated Poly(VinylChloride) (CPVC) Plastic Hot- and Cold-Water Distribu-tion SystemsF 402 Practice for Safe Handling of Solvent Cements,Primers, and Cleane
9、rs Used for Joining Thermoplastic Pipeand FittingsF 412 Terminology Relating to Plastic Piping SystemsF 439 Specification for Socket-Type Chlorinated Poly(Vi-nyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 802.2 NSF Standards:Standard No. 14 for Plastic Piping Components and RelatedMaterials3St
10、andard No. 61 for Drinking Water SystemsComponentsHealth Effects33. Terminology3.1 DefinitionsThe definitions in this specification are inaccordance with Terminology F 412.4. General Requirements4.1 The solvent cement shall be a solution of the base CPVCresin used to make Class 23447, chlorinated po
11、ly(vinyl chlo-ride) molding or extrusion compound as defined in Specifica-tion D 1784.4.2 When rework material is used, the manufacturer shalluse only his own clean rework material that is compatible withvirgin material and produces a cement that meets the require-ments of this specification.4.3 The
12、 cement shall be free-flowing and shall not containlumps, undissolved resin, or any foreign matter that willadversely affect the ultimate joint strength or chemical resis-tance of the cement.4.4 The cement shall show no gelation or stratification thatcannot be removed by stirring.4.5 When inert fill
13、ers and colorants are added, the resultingcement shall meet all requirements of this specification.1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.20 on Joining.Current edition approved May 1, 2004. Pub
14、lished June 2004. Originallyapproved in 1977. Last previous edition approved in 1997 as F 493 97.2Annual Book of ASTM Standards, Vol 15.06.For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume
15、information, refer to the standards Document Summary page onthe ASTM website.3Available from the National Sanitation Foundation, P.O. Box 1468, Ann Arbor,MI 48106.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 1It is recommende
16、d that CPVC solvent cement be orange incolor to facilitate identification and minimize unintentional use of othercements that may fail at elevated service temperatures.4.6 The particular solvent system to be used in the formu-lation of this solvent cement is not specified, since it isrecognized that
17、 a number of adequate solvent systems forCPVC exist. Solvent systems consisting of blends of tetrahy-drofuran and cyclohexanone have been found to make cementsthat meet the requirements of this specification.5. Detail Requirements5.1 Resin ContentThe CPVC resin content shall be 10 %minimum when test
18、ed in accordance with 6.1.5.2 DissolutionThe cement shall be capable of dissolvingan additional 3 % by weight of CPVC 41 compound (eitherpowder or granular) or equivalent CPVC resin at 23 6 2C (736 3.6F) without evidence of gelation.5.3 ViscosityCements are classified as regular-, medium-,or heavy-b
19、odied types, based on their minimum viscosity whentested in accordance with 6.2.5.3.1 Regular-bodied cements shall have a minimum vis-cosity of 90 MPas (90 cP).5.3.2 Medium-bodied cements shall have a minimum vis-cosity of 500 MPas (500 cP).5.3.3 Heavy-bodied cements shall have a minimum viscos-ity
20、of 1600 MPas (1600 cP).NOTE 2Refer to Appendix X2 for guidelines in selecting CPVCsolvent cements for joining different pipe sizes.5.4 Shelf StabilityThe cement, in the container in which itis supplied, shall show no gelation or stratification that cannotbe removed by stirring after aging 30 days at
21、 49C (120F).5.5 Hydrostatic Burst StrengthJoints made using 2-in.CPVC piping and this cement shall meet the requirements ofTable 1 when tested in accordance with 6.3.5.6 Hydrostatic Sustained Pressure StrengthJoints madeusing12-in. CPVC tubing and this cement shall meet therequirements of Table 2 wh
22、en tested in accordance with 6.4.6. Test Methods6.1 Solid Contents:6.1.1 Apparatus:6.1.1.1 Ointment Tins, Style No. 12, 30-mL (1-oz), allmetal,6.1.1.2 Analytical Balance,6.1.1.3 Vacuum Oven,6.1.1.4 Desiccator, and6.1.1.5 Centrifuge.6.1.2 ProcedureStir the sample thoroughly with a spatulabefore weigh
23、ing (Note 3). Weigh 3.0 6 0.5 g of the sample tothe nearest 1 mg into a tared ointment tin with cover. Place thetin into the vacuum oven (Note 4), and heat at 120C for 45 to60 min. Discard specimens left in for more than 60 min. Thevacuum must be continually in operation to draw off flammablesolvent
24、s and shall be maintained below 15 mm Hg pressure.Remove the tin from the oven and cap immediately. Place in adesiccator until cooled to room temperature. Weigh the tin anddried sample to the nearest 1 mg.NOTE 3This material is usually nonhomogeneous and shall be thor-oughly stirred before weighing.
25、 The weighing shall also be accomplishedquickly to avoid loss of solvent by evaporation.NOTE 4The use of a vacuum oven is mandatory for drying thespecimen, because this oven has neither an exposed heating surface nor anopen flame, thus avoiding the danger of flashing. The oven also providesan open v
26、acuum to exhaust solvent fumes.6.1.3 Inert Filler DeterminationDissolve most of thedried sample by adding 15 mL of tetrahydrofuran (THF) to thesample in the ointment tin and stirring with a glass rod for 15min. Collect the liquid decanted from this step, plus the liquidfrom the next two steps. Disso
27、lve the remainder with a secondaddition of 15 mL of THF, followed by a third addition of 5 mLof THF to rinse the ointment tin. Centrifuge the entire volumeat 20 000 rpm for 15 min. Discard the supernatant liquid. Add15 mL of THF to the tube, mix thoroughly, and transfer thetube contents to the ointm
28、ent tin. Use 2 mL more of THF towash down the tube, and pour into the ointment tin. Evaporateoff the THF in the vacuum oven at 120C for 45 min. Cool indesiccator, weigh the tin to the nearest 1 mg, and determine theweight of inert filler present in the cement.6.1.4 CalculationCalculate the percentag
29、e of CPVC resinas follows:Resin,% 5 B 2 A 2 D!/C 2 A! 3 100where:A = weight of ointment tin,B = weight of tin and specimen after drying,C = weight of tin and specimen before drying, andD = weight of inert filler, if present.NOTE 5Other methods for determination of resin and inert fillercontent may b
30、e used provided that the results of the alternative method areas accurate and consistent as the above method.6.2 Viscosity:6.2.1 Measure the viscosity in accordance with Method B ofTest Methods D 1084, except that conditioning to temperatureequilibrium only is required. For qualification purposes, u
31、se aModel RVF viscometer, a speed of 10 r/min, and the spindlethat, by trial, gives the closest reading to center range of scalefor the cement being tested. Other speeds may be used forquality control purposes.TABLE 1 Minimum Hydrostatic Burst Strength Requirements forNominal 2 in. CPVC Solvent-Ceme
32、nted Joints After2hDryingatTest TemperatureTemperature, C (F) Burst Pressure, MPa (psi)23 (73)82 (180)2.76 (400)1.38 (200)TABLE 2 Minimum Hydrostatic Sustained PressureRequirements for Nominal 1/2 in. CPVC Solvent-CementedJoints Tested in Water or Air External Environment at 82 6 2C(180 6 3.6F)TestC
33、onditionTest DurationHydrostatic Test Pressure, MPa (psi)Water Bath Air BathA 6 min 3.59(521)3.80(551)B 4 h 2.51(364)2.78(403)F4930426.3 Hydrostatic Burst Strength:6.3.1 Test in accordance with Test Method D 1599, exceptas herein specified.6.3.2 Prepare a test assembly containing at least six nomina
34、l2-in. solvent-cemented joints using CPVC 41 SDR 11 pipe andfittings meeting the requirements of Specification D 2846. Cutthe pipe into suitable lengths. The socket depth of the fittingsshall be 112 to 1916 in. (Schedule 80 in accordance withSpecification F 439).6.3.3 The dimensions of the pipe and
35、fitting socket shall besuch that the pipe will enter the socket from one third to twothirds of the full socket depth dry when assembled by hand.6.3.4 Cement the joints in accordance with the recom-mended solvent cementing procedure given in Appendix X1except for X1.7.6.3.5 Attach suitable end closur
36、es and fill the test assemblywith water, purging all air, and condition in water or air at thetest temperature for 120 6 5 min, then test immediately.6.3.6 Increase the internal pressure at a constant rate so as toreach the minimum burst requirement in 60 to 70 s.6.3.7 Leakage or separation at any o
37、f the joints tested at lessthan the minimum hydrostatic burst strength requirementsspecified in Table 1 shall constitute failure in this test.6.4 Hydrostatic Sustained Pressure Strength:6.4.1 Test in accordance with Test Method D 1598, exceptas herein specified.6.4.2 Prepare a test assembly containi
38、ng six nominal12-in.solvent-cemented joints using CPVC 41 SDR 11 tubing andfittings meeting the requirements of Specification D 2846. Cutthe tubing into 6-in. lengths and use two couplings and twomale adapters.6.4.3 The dimensions of the tubing and fitting socket shallbe such that the tubing will en
39、ter the socket from one third totwo thirds of the full socket depth dry when assembled byhand.6.4.4 Prepare the pipe and fittings for joining in accordancewith X1.1, X1.2 and X1.3 of the recommended solventcementing procedure given in Appendix X1. Do not applycleaner or primer and do not sand. Apply
40、 a very light coat ofCPVC cement to the socket and a heavy coat to the pipe end.Immediately insert the pipe into the fitting with a slighttwisting motion until it bottoms in the socket. Hold the jointtogether until the cement has set. Remove any excess cementfrom the joint.NOTE 6The purpose of the t
41、est method is to evaluate the performanceof the CPVC cement alone, and therefore applying cleaner or primer orsanding, in accordance with X1.4, is not required for this purpose.6.4.5 Dry the solvent-cemented joints in air at 23 6 2C(73.4 6 3.6F) for 336 6 2 hr. Then dry the solvent-cememtedjoints at
42、 82 6 2C (180 6 3.5F) for 48 6 2hr.6.4.6 Attach suitable end closures and fill the test assemblywith water, purging all air, and condition at the test temperaturefor 30 6 5 min if using a water bath or 120 6 5 min if usingan air bath, then test immediately.6.4.7 Attach to pressure source and place o
43、n test at 82C(180F) and the proper hydrostatic pressure 670 kPa (610 psi)as specified in Table 2. Increase the internal pressure at aconstant rate to reach the test pressure in 15 to 20 s.6.4.8 Leakage or separation at any of the joints tested at lessthan the test duration time specified in Table 2
44、for both testconditions A and B shall constitute failure in this test.7. Retest and Rejection7.1 If the results of any test(s) do not meet the requirementsof this specification, the test(s) shall be conducted again onlyby agreement between the purchaser and the seller. Under suchagreement, minimum r
45、equirements shall not be lowered, nortests omitted, substituted, changed, or modified, nor shallspecification limits be changed. If upon retest, failure occurs,the quantity of product represented by the test(s) does not meetthe requirements of this specification.8. Report8.1 Report the following inf
46、ormation:8.1.1 Name of cement manufacturer,8.1.2 Lot number or sample identification,8.1.3 Resin content, %,8.1.4 Dissolution, pass or fail,8.1.5 Viscosity,8.1.6 Shelf stability, pass or fail,8.1.7 Hydrostatic burst strength, and8.1.8 Hydrostatic sustained pressure strength, test durationtime.9. Cer
47、tification9.1 When specified in the purchase order, the manufacturershall certify to the purchaser or to his nominee that the productsin the specified lots meet all the requirements of this specifi-cation and when requested shall include a copy of the manu-facturers routine quality control tests to
48、document that thespecification requirements have been met. Each certification sofurnished shall be signed by an authorized agent of themanufacturer.10. Container Labeling and Marking10.1 Container labeling of CPVC solvent cement shallinclude the following:10.1.1 Manufacturers or sellers name and add
49、ress andtradename or trademark, or both.10.1.2 This designation: “ASTM F 493.”10.1.3 Function of material (Cement for CPVC Pipe).10.1.4 Cement type according to viscosity as shown indetail requirement of 5.3.10.1.5 Pipe sizes, SDRs, and schedules for which thecement is recommended.10.1.6 Procedure or instructions for application and use.10.1.7 Lot number of batch on container (not on closure orlid).10.1.8 Solvent cement intended for use on potable watersystems should be evaluated and certified as safe for thispurpose by a testing agency a
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