ASTM F336-2002(2009) Standard Practice for Design and Construction of Nonmetallic Enveloped Gaskets for Corrosive Service《腐蚀作业用非金属包封衬垫的设计和结构的标准方法》.pdf

1、Designation: F 336 02 (Reapproved 2009)Standard Practice forDesign and Construction of Nonmetallic Enveloped Gasketsfor Corrosive Service1This standard is issued under the fixed designation F 336; the number immediately following the designation indicates the year oforiginal adoption or, in the case

2、 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 practice covers the designs, sizes, classifications,and construction of enveloped gaske

3、ts for severe corrosiveapplications. The envelope serves as the corrosion resistantmember of the composite gasket and is a nonmetallic materialsuch as polytetrafluoroethylene, PTFE, or related materials.The inserts are nonmetallic gasketing materials with or withoutmetal reinforcement. Other types o

4、f composite gaskets arecovered in Classification F 868.1.2 This standard is based directly upon ANSIB16.211992; for that reason units are as ANSI stated ininches.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the u

5、ser of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 3294 Specification for Polytetrafluoroethylene (PTFE)Resin Molded Sheet and Molded Basic ShapesD 3308 Specif

6、ication for PTFE Resin Skived TapeF 104 Classification System for Nonmetallic Gasket Mate-rialsF112 Test Method for Sealability of Enveloped GasketsF 868 Classification for Laminated Composite Gasket Ma-terials2.2 Other Document:ASME B16.21 1992 Nonmetallic Flat Gaskets for PipeFlanges33. Significan

7、ce and Use3.1 The gaskets covered by this practice can be used on, butare not limited to, equipment constructed of the followingmaterials: (a) stoneware, (b) glass and glass-lined, (c) tantalum(solid and lined), (d) titanium (solid and lined or clad), (e)zirconium (solid and lined or clad), (f) silv

8、er (solid and lined),and (g) nickel and nickel alloys (solid and clad).3.2 The gaskets provided for herein are for the following:(a) pipe flanges (flat or raised face), (b) vessel nozzles, (c)circular openings in vessels in excess of 12 in. (305 mm)diameter, and (d) oval openings in vessels.4. Sizes

9、4.1 The gasket nominal size listed in inches, Table 1, will bethe same as used on the following pipe flanges in accordancewith ASME B16.21 1992:Pipe Size ASME12 to 24 in. B16.21 1992, Table 5 and 6Over 24 in. B16.21 1992, Table 1 and 24.2 Commercial dimensional tolerances apply, unless other-wise ag

10、reed upon between the seller and the purchaser.5. Materials and Manufacture5.1 The gaskets covered by this practice shall be made ofnonmetallic materials, except when a metal support is desiredin the insert.5.2 Materials should be selected, both for inserts andenvelopes, that will withstand the cond

11、itions under which theyare to be subjected in service.5.3 A list of reference literature for determining materialsuitability in corrosive environments is available from ASTMHeadquarters. It is entitled, “Materials of Construction ASTMF-3.50.10 Corrosion Data Literature.”45.4 The design of the envelo

12、pe classifies the envelopedgasket as follows:5.4.1 Split, knife cut (Fig. 1 and Fig. 2).5.4.2 Machined (Fig. 3 and Fig. 4).1This practice is under the jurisdiction ofASTM Committee F03 on Gaskets andis the direct responsibility of Subcommittee F03.10 on Composite Gaskets.Current edition approved May

13、 1, 2009. Published May 2009. Originallyapproved in 1971. Last previous edition approved in 2002 as F 336 02.2For 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 sta

14、ndards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Engineers, Three ParkAvenue, New York, NY 10016.4Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR: F03-1001.1Copyright ASTM Internation

15、al, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.4.3 Tape Folded, made endless by joining tape ends witha heat sealing procedure (Fig. 5 and Fig. 6).6. Insert Classification56.1 ConstructionsTwo insert constructions are covered asfollows:6.1.1 Construction 1S

16、ingle layer.6.1.2 Construction 2Multiple layer.6.2 GradesMultiple layer constructions include the fol-lowing:6.2.1 Grade 1Two layers, any combination of nonmetal-lic homogenous materials.6.2.2 Grade 2Three layers, any combination of nonme-tallic homogenous materials.5See Fig. 1 through Fig. 6.TABLE

17、1 Nominal Gasket SizesANOTE 1Refer to Fig. 1 through Fig. 6 for explanation of gasketcomponent details.NOTE 2Split design inserts not to be smaller than nominal pipe size.NOTE 3Inside diameter of folded and machined design envelopes willadjoin the insert inside diameter assuring noninterference with

18、 flowthrough pipe.NOTE 4Full face gaskets shall have envelope outside diameter sameas ring gasket outside diameter.NOTE 5Sizes 14 in. (356 mm) and larger may be made frommachined envelopes depending upon material shape availability.Insert (2) (See Note 1) Envelope (1) (See Note 1)NominalPipeSize, in

19、.II. InsideDiameter(B)III. FullFaceOutsideDiameter(D)IV. FlatRingGasketOutsideDiameter(C)V. (EachSide)ThicknessVI. InsideDiameter(A)VII. OutsideDiameter (C)in. in. in. in. in. in.12 0.84 3.50 1.88 0.015 0.50 1.8834 1.06 3.88 2.25 0.015 0.75 2.251 1.31 4.25 2.62 0.020 1.00 2.62114 1.66 4.63 3.00 0.02

20、0 1.25 3.00112 1.91 5.00 3.38 0.020 1.50 3.382 2.38 6.00 4.12 0.020 2.00 4.12212 2.88 7.00 4.88 0.020 2.50 4.883 3.50 7.50 5.38 0.020 3.00 5.38312 4.00 8.50 6.38 0.020 3.50 6.384 4.50 9.00 6.88 0.020 4.00 6.885 5.56 10.00 7.75 0.020 5.00 7.756 6.62 11.00 8.75 0.020 6.00 8.758 8.62 13.50 11.00 0.020

21、8.00 11.0010 10.75 16.00 13.38 0.020 10.00 13.3812 12.75 19.00 16.13 0.020 12.00 16.1214 14.00 21.00 17.75 0.015 notapplicable17.0016 16.00 23.50 20.25 0.015 see Note 5 19.0018 18.00 25.00 21.62 0.015 21.0020 20.00 27.50 23.88 0.015 23.0024 24.00 32.00 28.25 0.015 27.0030 30.00 38.75 34.75 0.015 33.

22、0036 36.00 46.00 41.25 0.015 39.0042 42.00 53.00 48.00 0.015 45.0048 48.00 59.50 54.50 0.015 51.0054 54.00 66.25 61.75 0.015 57.0060 60.00 73.00 68.12 0.015 63.0072 72.00 86.50 81.38 0.015 75.0084 84.00 99.75 94.25 0.015 87.0096 96.00 113.25 107.25 0.015 99.00AExtracted from American National Standa

23、rd Neometallic Gaskets for PipeSizes (ANSI B16.21-1992), with the permission of the publisher. The AmericanSociety of Mechanical Engineers, United Engineering Center, Three Park Avenue,New York, NY 10016.FIG. 1 Split Design (Flat Ring)FIG. 2 Split Design (Full Face)F 336 02 (2009)26.2.3 Grade 3, Thr

24、ee layers, the two outer layers nonmetal-lic homogenous materials, the inner layer (core) metallic.6.3 TypeThis classification covers insert material types asfollows:6.3.1 NonmetallicAny recognized nonmetallic gasket ma-terial in accordance with Classification F 104, taking intoconsideration limitat

25、ions with regard to temperature and pres-sure.6.3.2 MetallicInner layer (core) metallic material in Con-struction 2, Grade 3.6.3.2.1 Flat solid metal center.6.3.2.2 Corrugated metal center.6.3.2.3 Perforated metal center.6.3.2.4 Braided metal center.6.3.2.5 As specified.6.4 Construction 2, multiple

26、layer inserts may be pre-assembled by gluing, taping, or any other suitable methodbefore inserting in the envelope.6.5 Elastomeric materials with high flow or creep propertieshave a tendency to stretch and split the envelope and are notrecommended unless special provisions are made in the design.FIG

27、. 3 Machined Design (Flat Ring)FIG. 4 Machined Design (Full Face)FIG. 5 Folded Design (Flat Ring)FIG. 6 Folded Design (Full Face)F 336 02 (2009)36.6 Insert materials are not required to be corrosion-resistantin most cases since they are separated from the corrosives bythe corrosion-resistant envelop

28、e.6.7 Extremely hard materials (such as solid metal or phe-nolic laminates) are not recommended for single layer con-struction inserts or the outer inserts in multiple layer construc-tions since excessive bolt torquing would be required to effecta satisfactory seal.6.8 For determining the suitabilit

29、y of inserts to seal satis-factorily, Test Method F112is recommended.7. Inspection7.1 Inspect electrically the corrosion-resistant materialsused as shields for enveloped gaskets after all machining andforming has been completed, using the methods described inSpecifications D 3308 for tape and D 3294

30、 for machinedarticles, Type 1, Grade 1.7.2 Commercial dimensional tolerances apply unless other-wise agreed upon between the seller and the purchaser.8. Keywords8.1 corrosive service; enveloped; gaskets; nonmetallic;polytetrafluoroethylene (PTFE)ASTM International takes no position respecting the va

31、lidity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is su

32、bject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headqu

33、arters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This stand

34、ard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F 336 02 (2009)4