EN 13786:2004
(Main)Automatic change-over valves having a maximum outlet pressure of up to and including 4 bar with a capacity of up to and including 100 kg/h, and their associated safety devices for butane, propane or their mixtures
General Information
- Abstract
This EN defines the constructional and operational characteristics, the safety requirements and test methods, the marking, of automatic change-over valves with a capacity of less than or equal to 100 kg/h and having a maximum outlet pressure of less than or equal to 4 bar for butane, propane or their mixtures only in the vapour phase and referred to in the body of the text as "change-over valves". NOTE 1 bar = 105 Pa. Liquefied gases containing methylacetylene and propadiene are not covered by this standard.
- Status
- Withdrawn
- Publication Date
- 20-Apr-2004
- Withdrawal Date
- 04-Nov-2008
- Technical Committee
- CEN/TC 181 - Dedicated liquified petroleum gas appliances
- Drafting Committee
- CEN/TC 181/WG 8 - Pressure regulators and changeover devices
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 05-Nov-2008
- Completion Date
- 05-Nov-2008
- Directive
- Not Harmonized2009/142/EC - Appliances burning gaseous fuels
Not Harmonized90/396/EEC - Appliances burning gaseous fuelsOJ Ref: C, C 142, C 306 OJ Date: 10-Dec-2004
Relations
- Effective Date
- 19-Jan-2023
- Effective Date
- 28-Jan-2026
- Effective Date
- 22-Dec-2008
- Effective Date
- 22-Dec-2008
- Effective Date
- 22-Dec-2008
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Frequently Asked Questions
EN 13786:2004 is a standard published by the European Committee for Standardization (CEN). Its full title is "Automatic change-over valves having a maximum outlet pressure of up to and including 4 bar with a capacity of up to and including 100 kg/h, and their associated safety devices for butane, propane or their mixtures". This standard covers: This EN defines the constructional and operational characteristics, the safety requirements and test methods, the marking, of automatic change-over valves with a capacity of less than or equal to 100 kg/h and having a maximum outlet pressure of less than or equal to 4 bar for butane, propane or their mixtures only in the vapour phase and referred to in the body of the text as "change-over valves". NOTE 1 bar = 105 Pa. Liquefied gases containing methylacetylene and propadiene are not covered by this standard.
This EN defines the constructional and operational characteristics, the safety requirements and test methods, the marking, of automatic change-over valves with a capacity of less than or equal to 100 kg/h and having a maximum outlet pressure of less than or equal to 4 bar for butane, propane or their mixtures only in the vapour phase and referred to in the body of the text as "change-over valves". NOTE 1 bar = 105 Pa. Liquefied gases containing methylacetylene and propadiene are not covered by this standard.
EN 13786:2004 is classified under the following ICS (International Classification for Standards) categories: 23.060.20 - Ball and plug valves. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 13786:2004 has the following relationships with other standards: It is inter standard links to EN 13786:2004+A1:2008, EN 15001-1:2009, EN 13786:2004/prA1, EN 13786:2004/AC:2004, EN 16129:2013. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 13786:2004 is associated with the following European legislation: EU Directives/Regulations: 2009/142/EC, 90/396/EEC; Standardization Mandates: M/BC/CEN/89/6. 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.
EN 13786:2004 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Automatic change-over valves having a maximum outlet pressure of up to and including 4 bar with a capacity of up to and including 100 kg/h, and their associated safety devices for butane, propane or their mixturesInverseurs automatiques de débit inférieur ou égal a 100 kg/h, a pression de détente nominale maximale inférieure ou égale a 4 bar, et leurs dispositifs de sécurité associés, pour butane, propane ou leurs mélangesAutomatische Umschaltventile mit einem höchsten Ausgangsdruck bis einschließlich 4 bar und einem Durchfluss bis einschließlich 100kg/h für Butan, Propan oder deren Gemische, sowie die dazugehörigen SicherheitseinrichtungenTa slovenski standard je istoveten z:EN 13786:2004SIST EN 13786:2004en,fr,de23.060.20ICS:SLOVENSKI
STANDARDSIST EN 13786:200401-junij-2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13786April 2004ICS 23.060.20English versionAutomatic change-over valves having a maximum outletpressure of up to and including 4 bar with a capacity of up toand including 100 kg/h, and their associated safety devices forbutane, propane or their mixturesInverseurs automatiques de débit inférieur ou égal à 100kg/h, à pression de détente maximale inférieure ou égale à4 bar, et leurs dispositifs de sécurité associés, pour butane,propane ou leurs mélangesAutomatische Umschaltventile mit einem höchstenAusgangsdruck bis einschließlich 4 bar und einemDurchfluss bis einschließlich 100kg/h für Butan, Propanoder deren Gemische, sowie die dazugehörigenSicherheitseinrichtungenThis European Standard was approved by CEN on 2 February 2004.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13786:2004: E
Special requirements for automatic change over devices fitted with pressure orrate operated safety valves.32A.1Change over devices fitted with an over-pressure relief.32A.1.1Definition.32A.1.2Constructional characteristics.32A.1.3Performance characteristics.32A.1.3.1Automatic change over devices having a maximum regulated pressure of up to and including150 mbar.32A.1.3.2Automatic change over devices having a maximum regulated pressure exceeding
150 mbar.32A.1.4Test methods.33A.1.4.1Automatic change over devices having a maximum regulated pressure of up to and including150 mbar.33A.1.4.2Automatic change over devices having a maximum regulated pressure exceeding
150 mbar.33A.1.5Automatic change over device marking.33A.2Automatic change over device fitted with an over-pressure shut off safety valve.33A.2.1Definition.33A.2.2Constructional characteristics.34A.2.2.1General.34A.2.2.2Closing force.34A.2.2.3Diaphragm strength.34A.2.3Performance characteristics.34A.2.3.1Automatic change over devices with a maximum regulated pressure of up to and including150 mbar.34A.2.3.2Automatic change over devices with a maximum regulated exceeding 150 mbar.34A.2.4Test methods.34A.2.4.1Test for the components transmitting the closing forces.34A.2.4.2Test for diaphragm strength.35A.2.4.3Performance test.35A.3Automatic change over device fitted with an under-pressure shut off safety device.35A.3.1Definition.35A.3.2Constructional and performance characteristics.35A.3.3Test methods.36A.4Automatic change over devices fitted with an excess flow valve.36A.4.1Definition.36A.4.2Performance characteristics.36A.4.3Complementary tests for the automatic change over devices – Test methods.37A.4.4User and maintenance instructions.37A.5Automatic change over devices fitted with a regulated pressure limiter.37A.5.1Definition.37A.5.2Constructional and performance characteristics.37A.5.3Test methods.38A.5.3.1Test conditions.38A.5.3.2Measurement of the maximum regulated pressure.38A.5.3.3Measurement of the pressure drop.38A.5.4Users and maintenance instructions.38Annex B (normative)
Special requirements for automatic change over devices and automatic changeover devices systems for caravans and leisure vehicles.39
Special requirements for low pressure automatic change over devices underextreme temperature conditions (temperatures below - 20 °C).41Annex D (normative)
Method for measuring leaks at test pressures less than or equal to 16 bar.42D.1Scope.42D.2Diagram of the test bench.42D.3Coefficient K.43D.3.1Method.43D.3.2Calculations.43D.4Measurement of the leak.43D.4.1Method.43D.4.2Calculations.43D.5Checks.44Annex E (normative)
Complementary test requirements for non metallic thermoplastic or thermalsetting materials used in the construction of automatic change over devices.45E.1Scope.45E.2Materials.45E.3Special conditions for carrying out the test mentioned in the body of the standard.45E.3.1Resistance to impact (see 5.4.1 and 7.2.1).45E.3.2Mechanical resistance of connections (see 5.4.2 and 7.2.2).45E.3.3Soundness (see 5.5 – 7.2.4).46E.4Special requirements.46E.4.1 Resistance to hydrocarbons.46E.4.2
Resistance to cracking under stress and when chemical agents are present.46E.4.3 Characteristics relating to fire resistance.46E.4.4 Accelerated ageing.47E.5Sampling and order of tests.47Annex F (normative)
Requirements for elastomeric reinforced diaphgrams.48Annex G (normative)
Inlet connections.49Annex H (normative)
Outlet connections.95Annex I (normative)
Test method for resistance to corrosion.127I.1Principle.127I.2Reagents.127I.2.1Saline solution.127I.2.2Compressed air.127I.2.3Salt mist.128I.3Apparatus.128I.3.1Spraying chamber.128I.3.2Sprayers.128I.3.3Heating device.129I.3.4Salt solution supply device.129I.3.5Compressed air supply device.129I.3.6Mist collectors.129I.4Test method.130I.4.1Method of exposure of automatic change over device.130I.4.2Duration of tests.130I.4.3Checks.130I.4.4Cleaning of automatic change over device.130I.5Results.130Annex ZA (informative)
Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.133Bibliography.135
in such a way as to operate like an automatic change overdevice as in 3.1.1 (see annex B)Key1Pressure sensing subassembly2Regulation subassembly3Back pressure subassembly4Mechanical connection subassembly5Connection subassemblyFigure 1 — Diagram of a automatic change over devices3.1.3fixed automatic change over deviceautomatic change over device whose regulated pressure is adjusted by the manufacturer and fixed and whoseadjustment cannot be modified by the user3.1.4variable automatic change over deviceautomatic change over device whose regulated pressure may be modified by the user simple manipulationbetween two fixed limits3.1.5adjustable automatic change over deviceautomatic change over device whose regulated pressure may only be modified by a specialist at the time ofinstallation; it is then fixed fashion
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