ASTM F434-93(2017)

Standard Test Method for Blow-Out Testing of Preformed Gaskets

SIGNIFICANCE AND USE
3.1 This test method is designed to compare all types of preformed gaskets under controlled conditions with respect to blow-out resistance. This test method may be used as a routine test when agreed upon between the purchaser and the seller.
SCOPE
1.1 This test method covers the determination of the resistance against blow-out of preformed gaskets. The test is conducted under ambient conditions and should be used for comparison purposes only to select suitable designs and constructions for specific applications.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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 and health 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

• Status: Published
• Publication Date: 30-Apr-2017
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: F03 - Gaskets
• Drafting Committee: F03.20 - Mechanical Test Methods

Relations

• Replaces: ASTM F434-93(2009) - Standard Test Method for Blow-Out Testing of Preformed Gaskets
• Effective Date: 01-May-2017

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: F434 − 93 (Reapproved 2017)
Standard Test Method for
Blow-Out Testing of Preformed Gaskets
ThisstandardisissuedunderthefixeddesignationF434;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4.2 Test Unit, capable of withstanding 7 MPa (1000 psi)
internal pressure under ambient conditions. Provisions should
1.1 This test method covers the determination of the resis-
be made for valve and pressure gage mountings, as shown in
tance against blow-out of preformed gaskets. The test is
Fig.1.Thegageshallreadfrom0to7MPa(0to1000psi)and
conducted under ambient conditions and should be used for
be mounted so as to be visible at some distance.
comparison purposes only to select suitable designs and
constructions for specific applications. 4.3 Booster Pump—An air-operated hydraulic (water) pres-
−5 3 3
sure pump, capable of delivering 1.1×10 m /s (40 in. /min)
1.2 The values stated in SI units are to be regarded as the
against a back pressure of 35 MPa (5000 psi).
standard. The values given in parentheses are for information
only. 4.4 Temperature Indicating Device—A thermometer ca-
pable of reading 1°C (2°F) in the ambient temperature range.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Test Specimen
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 5.1 The specimen shall be a 102 mm (4-in.) nominal-size
bility of regulatory limitations prior to use.
gasket114mm(4.5in.)ininsidediameterby165mm(6.5in.)
1.4 This international standard was developed in accor- in outside diameter. The thickness of the test gasket will
dance with internationally recognized principles on standard-
depend upon its expected usage and must be specified in the
ization established in the Decision on Principles for the report, as results will vary accordingly.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 6. Procedure
Barriers to Trade (TBT) Committee.
6.1 Assemble the specimen in the test unit.
6.2 The bolt threads should be well lubricated using moly-
2. Referenced Documents
disulfide dry film or grease. Sanding the bottom of the bolt
2.1 ASTM Adjuncts:
heads and the washers will reduce torque variable and ensure
Detailed Drawings of Test Unit
duplication of results.
3. Significance and Use
6.3 Tighten the bolts, using the sequence shown in Fig. 2,
increasing the torque loading in 25% increments to the
3.1 This test method is designed to compare all types of
targeted torque, but do not exceed the rating on the bolts.
preformed gaskets under controlled conditions with respect to
blow-out resistance.This test method may be used as a routine
6.4 Fill the test unit with water, and bleed out all excess air
test when agreed upon between the purchaser and the seller.
by tilting until no further air bubbles are forthcoming.
6.5 Fill the oil reservoir (thermowell) three-quarters full of
4. Apparatus
light oil. Allow 15 min for the temperature to stabilize, and
4.1 Pressure Supply, capable of 7 MPa (1000 psi), prefer-
insert the temperature sensor.
ablyhydraulic,andwithpropersafetyprecautions,intheevent
6.6 Before applying hydrostatic pressure, cover the entire
of a rapid-gasket failure.
test receptacle with a metal shield, leaving the gage exposed
for the recording of data.
This test method is under the jurisdiction ofASTM Committee F03 on Gaskets
and is the direct responsibility of Subcommittee F03.20 on Mechanical Test
Methods
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