1、Designation:F271608(Reapproved 2014)Standard Practice forComparison of Nonmetallic Flat Gaskets in High PressureSaturated Steam1This standard is issued under the fixed designation F2716;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,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 provides a means of comparing variousnonmetallic flat gasket materials,Classification F104,in sa
3、tu-rated steam service under controlled conditions.While thepractice is designed primarily for flat gaskets,it also can beapplied to various form-in-place gasket materials upon modi-fication.The practice may be used for quality control ormaterial comparison purposes as agreed upon between pro-ducer
4、and user.This practice is consistent with Fluid SealingAssociation test method,FSA-NMG-204-02,with regard tofixtures used and procedure.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided fo
5、r information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regu
6、latory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A193/A193M Specification for Alloy-Steel and StainlessSteel Bolting for High Temperature or High PressureService and Other Special Purpose ApplicationsA194/A194M Specification for Carbon andAlloy Steel Nutsfor Bolts for High P
7、ressure or High Temperature Service,or BothF104 Classification System for Nonmetallic Gasket Materi-als2.2 ASME Standards:3ASME B16.21 Nonmetallic Flat Gaskets for Pipe FlangesASME PCC-1 Guidelines for Pressure Boundary BoltedFlange Joint Assembly2.3 ESA/FSA Standards:4ESA/FSA Publication No.009/98
8、Guidelines for Safe SealUsage-Flanges and GasketsFSA-NMG-204-02 Standard Test Method for Performanceof Non-Asbestos Gaskets in High Pressure,SaturatedSteam3.Significance and Use3.1 This practice may be used to evaluate ClassificationF104 gasket materials using saturated steam and standardASME RF(rai
9、sed face)flanges.This practice is intended foruse as quality control or material comparison tool and shouldnot be used to predict performance.4.Apparatus4.1 The test equipment shall consist of the following com-ponents:4.1.1 Hot Air Circulating Oven,equipped with temperaturecontrols and capable of m
10、aintaining temperatures up to 570 65F(299 6 3C).4.1.2 Scales,capable of maintaining an accuracy of 60.1 gwith a nominal capacity of 12 kg.4.1.3 Flange FixtureA2 in.cast steel Class 600 fixturemade from one weld neck flange capped by welding to boilercode and one blind flange(see Fig.1).Flange surfac
11、es are 275to 325 RMS in.(7.0 to 8.3 mm),flatness range 0.002 in.(0.05 mm).Each fixture shall have an identification number.4.1.4 Flange ProtectorsTo help ensure safe operation,usestandard metal flange protectors.4.1.5 Fasteners:4.1.5.1 Seven58-in.bolts,4 in.long,per SpecificationA193/A193M,Grade B7.
12、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 July 1,2014.Published November 2014.Originallyapproved in 2008.Last previous edition approved in 2008 as F2716 08.DOI:10.1520/
13、F2716-08R14.2For 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 standards Document Summary page onthe ASTM website.3Available from American Society of Mechanical Enginee
14、rs(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.org.4Available from Fluid Sealing Association(FSA),994 Old Eagle School Road,Suite 1019,Wayne,PA 190871866.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.Unit
15、ed States1 4.1.5.2 One calibrated bolt modified by the insertion of acalibration pin as detailed in Fig.1.4.1.5.3 Eight58-in.hexagonal nuts per Specification A194/A194M,Grade 4,coarse thread.4.1.5.4 Sixteen58-in.hardened steel washers(38-45 HRC),Grade 8.4.1.6 Calibrated Dial Indicator,graduated to 0
16、.0001 in.(0.0025 mm)and equipped with a 90 conical contact point tobe used in conjunction with the adapter shown in Fig.1.4.1.7 Torque WrenchOne calibrated torque wrench with aminimum capacity of 70 ftlbf(95 Nm).4.1.8 Torque WrenchOne calibrated torque wrench with arange of 0 to 200 in.lbf(0 to 23 Nm).4.1.9 Bolt LubricantHigh temperature-resistant molybde-num disulfide grease.4.2 Preparation of Apparatus:4.2.1 Prior to running any tests in a new fixture,the integrityof the assembled test fixture
