ASTM F2716-08(2020)
(Practice)Standard Practice for Comparison of Nonmetallic Flat Gaskets in High Pressure Saturated Steam
Standard Practice for Comparison of Nonmetallic Flat Gaskets in High Pressure Saturated Steam
SIGNIFICANCE AND USE
3.1 This practice may be used to evaluate Classification F104 gasket materials using saturated steam and standard ASME RF (raised face) flanges. This practice is intended for use as quality control or material comparison tool and should not be used to predict performance.
SCOPE
1.1 This practice provides a means of comparing various nonmetallic flat gasket materials, Classification F104, in saturated steam service under controlled conditions. While the practice is designed primarily for flat gaskets, it also can be applied to various form-in-place gasket materials upon modification. The practice may be used for quality control or material comparison purposes as agreed upon between producer and user. This practice is consistent with Fluid Sealing Association test method, FSA-NMG-204-02, with regard to fixtures used and procedure.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F2716 − 08 (Reapproved 2020)
Standard Practice for
Comparison of Nonmetallic Flat Gaskets in High Pressure
Saturated Steam
This standard is issued under the fixed designation F2716; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope A194/A194M Specification for Carbon Steel, Alloy Steel,
and Stainless Steel Nuts for Bolts for High Pressure or
1.1 This practice provides a means of comparing various
High Temperature Service, or Both
nonmetallic flat gasket materials, Classification F104, in satu-
F104 Classification System for Nonmetallic Gasket Materi-
rated steam service under controlled conditions. While the
als
practice is designed primarily for flat gaskets, it also can be
2.2 ASME Standards:
applied to various form-in-place gasket materials upon modi-
ASME B16.21 Nonmetallic Flat Gaskets for Pipe Flanges
fication. The practice may be used for quality control or
ASME PCC-1 Guidelines for Pressure Boundary Bolted
material comparison purposes as agreed upon between pro-
Flange Joint Assembly
ducer and user. This practice is consistent with Fluid Sealing
Association test method, FSA-NMG-204-02, with regard to
2.3 ESA/FSA Standards:
fixtures used and procedure. ESA/FSA Publication No. 009/98 Guidelines for Safe Seal
Usage - Flanges and Gaskets
1.2 The values stated in inch-pound units are to be regarded
FSA-NMG-204-02 Standard Test Method for Performance
as standard. The values given in parentheses are mathematical
of Non-Asbestos Gaskets in High Pressure, Saturated
conversions to SI units that are provided for information only
Steam
and are not considered standard.
1.3 This standard does not purport to address all of the
3. Significance and Use
safety concerns, if any, associated with its use. It is the
3.1 This practice may be used to evaluate Classification
responsibility of the user of this standard to establish appro-
F104 gasket materials using saturated steam and standard
priate safety, health, and environmental practices and deter-
ASME RF (raised face) flanges. This practice is intended for
mine the applicability of regulatory limitations prior to use.
use as quality control or material comparison tool and should
1.4 This international standard was developed in accor-
not be used to predict performance.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Apparatus
Development of International Standards, Guides and Recom-
4.1 The test equipment shall consist of the following com-
mendations issued by the World Trade Organization Technical
ponents:
Barriers to Trade (TBT) Committee.
4.1.1 Hot Air Circulating Oven, equipped with temperature
controls and capable of maintaining temperatures up to 570 6
2. Referenced Documents
5°F (299 6 3°C).
2.1 ASTM Standards:
4.1.2 Scales, capable of maintaining an accuracy of 60.1 g
A193/A193M Specification for Alloy-Steel and Stainless
with a nominal capacity of 12 kg.
Steel Bolting for High Temperature or High Pressure
4.1.3 Flange Fixture—A2 in. cast steel Class 600 fixture
Service and Other Special Purpose Applications
made from one weld neck flange capped by welding to boiler
code and one blind flange (see Fig. 1). Flange surfaces are 275
to 325 RMS µin. (7.0 to 8.3 µmm), flatness range 0.002 in.
This practice is under the jurisdiction ofASTM Committee F03 on Gaskets and
(0.05 mm). Each fixture shall have an identification number.
is the direct responsibility of Subcommittee F03.10 on Composite Gaskets.
Current edition approved Jan. 1, 2020. Published February 2020. Originally
approved in 2008. Last previous edition approved in 2014 as F2716 – 08 (2014).
DOI: 10.1520/F2716-08R20. Available from American Society of Mechanical Engineers (ASME), ASME
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
Standards volume information, refer to the standard’s Document Summary page on Available from Fluid Sealing Association (FSA), 994 Old Eagle School Road,
the ASTM website. Suite 1019, Wayne, PA 19087–1866.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2716 − 08 (2020)
FIG. 1 FSA Steam Test Fixture
4.1.4 FlangeProtectors—To help ensure safe operation, use ture is not specified, this maximum shall be used as the default.
standard metal flange protectors. However, any temperature that does not exceed this limit may
4.1.5 Fasteners: be used if agreed upon by the producer and user.
4.1.5.1 Seven ⁄8-in. bolts, 4 in. long, per Specification
4.2.3 Follow the steps in Section 9 for one cycle of a
A193/A193M, Grade B7. minimum of 24 h. Ensure that the gasket is acceptable for that
4.1.5.2 One calibrated bolt modified by the insertion of a temperature/pressure.
calibration pin as detailed in Fig. 1.
4.1.5.3 Eight ⁄8-in. hexagonal nuts per Specification A194/
5. Test Specimen
A194M, Grade 4, coarse thread.
5.1 The test specimen shall be a Class 600 2-in. (50-mm)
4.1.5.4 Sixteen ⁄8-in. hardened steel washers (38-45 HRC),
ring gasket. It is recommended that a ⁄16-in. (1.5-mm) thick
Grade 8.
gasket be used. However, other thicknesses can be used if
4.1.6 Calibrated Dial Indicator, graduated to 0.0001 in.
agreed to by the producer and user.
(0.0025 mm) and equipped with a 90° conical contact point to
5.1.1 See ASME B16.21, Table 8, for gasket dimensions.
be used in conjunction with the adapter shown in Fig. 1.
5.1.2 See Classification F104 for thickness tolerance.
4.1.7 Torque Wrench—One calibrated torque wrench with a
5.1.3 Preconditioning of the test gasket is not necessary,
minimum capacity of 70 ft·lbf (95 N·m).
since this test is designed for shelf stock gaskets.
4.1.8 Torque Wrench—One calibrated torque wrench with a
range of 0 to 200 in.·lbf (0 to 23 N·m).
6. Flange Limits
4.1.9 Bolt Lubricant—High temperature-resistant molybde-
6.1 Ensure that the test pressure never exceeds the pressure/
num disulfide grease.
temperature rating of the flange class:
4.2 Preparation of Apparatus:
Class 600 Cast Steel
4.2.1 Priortorunninganytestsinanewfixture,theintegrity
@ 400°F (205°C) Limited to 1270 psig (88.6 bar) or (8.87 MPa)
of the assembled test fixture should be checked by running a
@ 500°F (260°C) Limited to 1200 psig (83.8 bar) or (8.38 MPa)
test at a temperature at least 100°F (38°C) higher than the test @ 600°F (316°C) Limited to 1095 psig (76.6 bar) or (7.66 MPa)
@ 700°F (371°C) Limited to 1065 psig (74.5 bar) or (7.45 MPa)
temperature,withoutexceedingthetemperature/pressurerating
for the flange. A standard gasket material approved for these
7. Test Limits
service conditions shall be used with water as the test fluid.
4.2.2 The maximum use temperature for the fixture with 7.1 Temperature/pressure properties for saturated steam
saturated steam is 563°F (295°C). Therefore, if a test tempera- from the steam table:
F2716 − 08 (2020)
9.6.6 Using a calibrated torque wrench, torque the bolt
400°F (205°C) Generates 235 psig (16.2 bar) or (1.62 MPa)
450°F (232°C) Generates 405 psig (27.9 bar) or (2.79 MPa)
according to the FSA recommended cross pattern in 3 incre-
500°F (260°C) Generates 665 psig (45.8 bar) or (4.58 MPa)
ments of 20 6 5 ft·lbf (27 6 7 N·m) and finally one cycle at
540°F (282°C) Generates 945 psig (65.1 bar) or (6.51 MPa)
65 6 5 ft·lbf (886 7 N·m) (see ESA/FSA Publication No.
550°F (288°C) Generates 1035 psig (71.3 bar) or (7.13 MPa)
563°F (295°C) Generates 1145 psig (78.9 bar) or (7.89 MPa)
009/98 or ASME PCC-1, or both). Then torque each bolt
consecutively in a counterclockwise pattern at 65 ft·lbf (88
8. Bolt Torque Guidelines
N·m), doing the first bolt a second time. The final torque may
8.1 The recommended assembly torque is 65 6 5 ft·lb
...
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