SIST EN 12516-3:2003
(Main)Valves - Shell design strength - Part 3: Experimental method
Valves - Shell design strength - Part 3: Experimental method
This standard specifies requirements for an experimental method, to prove by type test that the design of shells and their body ends, made in cast iron, steel or copper alloy materials, possess the required pressure containing capability, with an adequate margin of safety. This standard is not applicable to valves designed on the basis of time dependent strength values. e.g. pulsating pressure applications and/or creep range temperatures.
Armaturen - Gehäusefestigkeit - Teil 3: Experimentelles Verfahren
Diese Norm legt die Anforderung für ein experimentelles Verfahren fest, mit dem über eine Typprüfung nachgewiesen werden kann, daß die Auslegung der drucktragenden Gehäuse und deren Endöffnungen, hergestellt aus Gußeisen, Stahl oder Kupferlegierung, die erforderliche Druckfestigkeit mit einer angemessenen Sicherheitsspanne besitzt. Diese Norm ist nicht anwendbar auf Armaturen, die auf der Basis von zeitabhängigen Festigkeitskennwerten ausgelegt sind, z.B. für Anwendung bei Druckstößen und/oder bei Temperaturen im Kriechbereich.
Appareils de robinetterie - Résistance mécanique des enveloppes - Partie 3: Méthode expérimentale
La présente norme spécifie les prescriptions d'une méthode expérimentale desti- née à prouver que des enveloppes et leurs extrémités, fabriquées dans des matériaux tels que fonte, acier, ou alliage de cuivre ont la résistance à la pression exigée avec une marge de sécurité appropriée. Cette norme ne s'applique pas aux appareils de robinetterie conçus sur la base de valeurs de résistance à la rupture fonction du temps, telles que des applications d'une pression pulsatoire et/ou des gammes de température de fluage.
Ventili - Trdnost ohišja - 3. del: Eksperimentalna metoda
General Information
- Status
- Published
- Publication Date
- 30-Jun-2003
- Technical Committee
- TLP - Pressure vessels
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jul-2003
- Due Date
- 01-Jul-2003
- Completion Date
- 01-Jul-2003
Relations
- Corrected By
SIST EN 12516-3:2003/AC:2004 - Valves - Shell design strength - Part 3: Experimental method - Effective Date
- 01-Jun-2004
- Revised
oSIST prEN 12516-3:2025 - Industrial valves - Shell design strength - Part 3: Experimental method - Effective Date
- 01-Oct-2025
- Effective Date
- 22-Dec-2008
- Effective Date
- 22-Dec-2008
Overview
EN 12516-3:2002 - Valves: Shell design strength - Part 3: Experimental method (CEN) specifies a repeatable, hydrostatic type-test to verify that valve shells and body ends (cast iron, steel, copper alloys) have the required pressure-containing capability with an adequate safety margin. It is intended as an alternative or supplement to the tabulation (Part 1) and calculation (Part 2) methods. The standard excludes valves designed on time-dependent strength (creep) or for pulsating-pressure/fatigue applications.
Key topics and technical requirements
- Test principle: Elevated hydrostatic pressure test at room temperature to assess shell/body strength.
- Test pressure calculation: Experimental test pressure is determined using the formula pt,exp = K · PSRT where K = C · Xmax · Y:
- C = experimental test factor (material-dependent; values defined in Table 1).
- X = ratio of measured wall thickness (emes) to minimum drawing thickness (emin).
- Y = ratio of actual proof strength (from material certificates) to minimum specified proof strength.
- Separate K and pt,exp values are calculated for the body and for bonnet/cover; the lower pressure is applied first, then the higher.
- Wall thickness rules: emes must be measured at designated locations; measured thicknesses that exceed minimum by more than the greater of 2.5 mm (if <10 mm) or 25% are not acceptable for test specimens. Local areas smaller than DN10 mm² are ignored when computing X.
- Material verification: Use material test certificates to determine actual proof/tensile properties used to calculate Y.
- Test fluid & temperature: Water between 5 °C and 40 °C.
- Duration: Minimum test duration is 10 minutes (per pressure step).
- Test setup: Body ends closed with suitable seals (flanges, welded caps, plugs); test rig must not externally reinforce or load the shell in ways that affect results.
- Acceptance criteria: No visible leakage through metallic parts. Gasket leakage is acceptable if it does not obscure assessment.
- Documentation: Full recording of test parameters, measurements and outcomes is required.
Applications and users
EN 12516-3 is used by:
- Valve manufacturers conducting type tests for product development or conformity.
- Testing laboratories and quality assurance teams performing hydrostatic strength verification.
- Design engineers choosing between experimental, tabulation, or calculation methods.
- Compliance and certification bodies assessing conformity with EU PED (97/23/EC) and national adoption of CEN standards. Useful where representative physical verification is preferred or required, especially for castings and alloys with variable ductility.
Related standards and regulatory context
- EN 12516-1 (Tabulation method) and EN 12516-2 (Calculation method) - same series.
- EN 736-2 / EN 736-3 - valve terminology and component definitions.
- EU Directive 97/23/EC (PED) - the standard notes PED limits (e.g., guidance on PSRT · DN thresholds) and includes an informative Annex ZA mapping essential requirements.
Keywords: EN 12516-3:2002, valve shell strength, experimental hydrostatic test, valve testing, CEN valve standards, PSRT, material proof strength, wall thickness measurement.
Frequently Asked Questions
SIST EN 12516-3:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Valves - Shell design strength - Part 3: Experimental method". This standard covers: This standard specifies requirements for an experimental method, to prove by type test that the design of shells and their body ends, made in cast iron, steel or copper alloy materials, possess the required pressure containing capability, with an adequate margin of safety. This standard is not applicable to valves designed on the basis of time dependent strength values. e.g. pulsating pressure applications and/or creep range temperatures.
This standard specifies requirements for an experimental method, to prove by type test that the design of shells and their body ends, made in cast iron, steel or copper alloy materials, possess the required pressure containing capability, with an adequate margin of safety. This standard is not applicable to valves designed on the basis of time dependent strength values. e.g. pulsating pressure applications and/or creep range temperatures.
SIST EN 12516-3:2003 is classified under the following ICS (International Classification for Standards) categories: 23.060.01 - Valves in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 12516-3:2003 has the following relationships with other standards: It is inter standard links to SIST EN 12516-3:2003/AC:2004, oSIST prEN 12516-3:2025; is excused to SIST EN 12516-1:2005, SIST EN 12516-2:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 12516-3:2003 is associated with the following European legislation: EU Directives/Regulations: 2014/68/EU, 97/23/EC, EUR-PUB; Standardization Mandates: M/071. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Valves - Shell design strength - Part 3: Experimental methodVentili - Trdnost ohišja - 3. del: Eksperimentalna metodaAppareils de robinetterie - Résistance mécanique des enveloppes - Partie 3: Méthode expérimentaleArmaturen - Gehäusefestigkeit - Teil 3: Experimentelles VerfahrenTa slovenski standard je istoveten z:EN 12516-3:2002SIST EN 12516-3:2003en23.060.01ICS:SLOVENSKI
STANDARDSIST EN 12516-3:200301-julij-2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12516-3October 2002ICS 23.060.01English versionValves - Shell design strength - Part 3: Experimental methodAppareils de robinetterie - Résistance mécanique desenveloppes - Partie 3: Méthode expérimentaleArmaturen - Gehäusefestigkeit - Teil 3: ExperimentellesVerfahrenThis European Standard was approved by CEN on 1 August 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12516-3:2002 E
Information on the origin of the experimental test factor, C.9Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.11Bibliography.12
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