prEN 12806

LPG equipment and accessories - Automotive liquefied petroleum gas components - Other than containers

This document specifies the general design and testing requirements for all components, in automotive Liquefied Petroleum Gas (LPG) propulsion systems, which have a working pressure equal to or greater than 20 kPa.
This document also specifies the requirements for the Electric Control Unit (ECU), which is not subjected to pressure, and the gas-tight housing which has a working pressure below 20 kPa.
This document excludes containers.

Flüssiggas-Geräte und Ausrüstungsteile - Bauteile für Autogasanlagen/Treibgasanlagen - Bauteile, ausgenommen Autogastanks

Dieses Dokument legt die allgemeine Auslegung und die Prüfanforderungen von allen Bauteilen in Autogas  (LPG, en: Liquefied Petroleum Gas) Antriebsanlagen mit einem Betriebsdruck von gleich oder größer 20 kPa fest.
Dieses Dokument legt auch die Anforderungen an das elektronische Steuergerät (ECU, en: Electronic Control Unit), das nicht druckbeaufschlagt ist, sowie die Anforderungen an den gasdichten Armaturenkasten, der einem Betriebsdruck von weniger als 20 kPa ausgesetzt ist, fest.
Autogastanks sind von diesem Dokument ausgenommen.

Équipements pour GPL et leurs accessoires - Composants pour véhicules au gaz de pétrole liquéfiés - Composants autres que le réservoir

Le présent document spécifie la conception générale et les exigences relatives aux essais, pour tous les composants des véhicules à moteur utilisant, en tant que carburant, le gaz de pétrole liquéfié (GPL) dans leur système de propulsion, et ayant une pression d'utilisation supérieure ou égale à 20 kPa.
Le présent document spécifie également les exigences pour le module de contrôle électronique (ECU) qui n'est pas soumis à la pression, et le capot étanche qui a une pression d'utilisation inférieure à 20 kPa.
Le présent document exclut les réservoirs.

Oprema in pribor za utekočinjeni naftni plin (UNP) - Sestavni deli pogonov motornih vozil na UNP - Sestavni deli, razen posod za gorivo

General Information

• Status: Not Published
• ICS: 43.060.40 - Fuel systems
• Technical Committee: CEN/TC 286 - Liquefied petroleum gas equipment and accessories
• Drafting Committee: CEN/TC 286/WG 6 - Automative LPG system
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 13-Oct-2021
• Completion Date: 13-Oct-2021
• Ref Project: oSIST prEN 12806:2020 - LPG equipment and accessories - Automotive liquefied petroleum gas components - Other than containers

RELATIONS

• Revised: EN 12806:2003 - Automotive liquefied petroleum gas components - Other than containers
• Effective Date: 27-Mar-2019

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 12806:2020
01-november-2020
Oprema in pribor za utekočinjeni naftni plin (UNP) - Elementi za pogon motornih
vozil na UNP - Elementi, razen posod za gorivo
LPG equipment and accessories - Automotive liquefied petroleum gas components -
Other than containers

Flüssiggas-Geräte und Ausrüstungsteile - Bauteile für Autogasanlagen/Treibgasanlagen

- Bauteile, ausgenommen Autogastanks
Équipements pour GPL et leurs accessoires - Composants pour véhicules au gaz de
pétrole liquéfiés - Composants autres que le réservoir
Ta slovenski standard je istoveten z: prEN 12806
ICS:
43.060.40 Sistemi za gorivo Fuel systems
oSIST prEN 12806:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12806:2020
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oSIST prEN 12806:2020
DRAFT
EUROPEAN STANDARD
prEN 12806
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2020
ICS 43.060.40 Will supersede EN 12806:2003
English Version
LPG equipment and accessories - Automotive liquefied
petroleum gas components - Other than containers

Équipements pour GPL et leurs accessoires - Flüssiggas-Geräte und Ausrüstungsteile - Bauteile für

Composants pour véhicules au gaz de pétrole liquéfiés Autogasanlagen/Treibgasanlagen - Bauteile,

- Composants autres que le réservoir ausgenommen Autogastanks

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 286.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations

which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12806:2020 E

worldwide for CEN national Members.
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oSIST prEN 12806:2020
prEN 12806:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 8

1 Scope .................................................................................................................................................................... 9

2 Normative references .................................................................................................................................... 9

3 Terms, definitions and abbreviations .................................................................................................. 10

3.1 Terms and definitions ................................................................................................................................ 10

3.2 Symbols and abbreviations ...................................................................................................................... 13

4 Technical requirements............................................................................................................................. 13

4.1 General ............................................................................................................................................................. 13

4.2 General design rules ................................................................................................................................... 15

4.2.1 Electrically operated devices containing LPG .................................................................................... 15

4.2.2 Remotely operated valves ......................................................................................................................... 15

4.2.3 Heat exchanger materials ......................................................................................................................... 15

4.2.4 Components containing high and low pressure parts .................................................................... 15

4.3 Materials .......................................................................................................................................................... 15

4.4 Design temperature .................................................................................................................................... 16

5 Classification of components ................................................................................................................... 16

5.1 Classification of automatic valves .......................................................................................................... 16

6 Construction and workmanship ............................................................................................................. 17

7 Tests .................................................................................................................................................................. 17

7.1 General ............................................................................................................................................................. 17

7.2 Overpressure test ......................................................................................................................................... 18

7.2.1 General ............................................................................................................................................................. 18

7.2.2 Test procedure .............................................................................................................................................. 18

7.2.3 Interpretation of the test ........................................................................................................................... 18

7.3 External leak tests........................................................................................................................................ 18

7.3.1 Type approval test ....................................................................................................................................... 18

7.3.2 Production (routine) testing .................................................................................................................... 19

7.4 Seat leak test .................................................................................................................................................. 19

7.4.1 Type approval testing ................................................................................................................................. 19

7.4.2 Production (routine) testing .................................................................................................................... 20

7.5 Operational tests .......................................................................................................................................... 20

7.5.1 Pressure relief valve and hydrostatic relief valve ........................................................................... 20

7.5.2 Excess flow valve .......................................................................................................................................... 21

7.5.3 80 % stop valve ............................................................................................................................................. 22

7.5.4 Fusible plug .................................................................................................................................................... 22

7.6 Endurance test .............................................................................................................................................. 23

7.6.1 General ............................................................................................................................................................. 23

7.6.2 Test procedure .............................................................................................................................................. 23

7.6.3 Test interpretation ...................................................................................................................................... 23

7.7 Vibration test ................................................................................................................................................. 23

7.7.1 General ............................................................................................................................................................. 23

7.7.2 Test procedure .............................................................................................................................................. 24

7.8 LPG compatibility test (for rubber materials) ................................................................................... 25

7.8.1 Test procedure .............................................................................................................................................. 25

7.8.2 Test interpretation ...................................................................................................................................... 26

7.9 Corrosion resistance test ........................................................................................................................... 26

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7.9.1 Test procedure .............................................................................................................................................. 26

7.9.2 Test interpretation ....................................................................................................................................... 26

7.10 Resistance to dry heat test ........................................................................................................................ 26

7.10.1 General ............................................................................................................................................................. 26

7.10.2 Test procedure .............................................................................................................................................. 26

7.10.3 Test interpretation ....................................................................................................................................... 26

7.11 Ozone ageing test .......................................................................................................................................... 27

7.11.1 General ............................................................................................................................................................. 27

7.11.2 Test procedure .............................................................................................................................................. 27

7.11.3 Test interpretation ....................................................................................................................................... 27

7.12 Creep test ......................................................................................................................................................... 27

7.12.1 Test procedure .............................................................................................................................................. 27

7.12.2 Test interpretation ....................................................................................................................................... 27

7.13 Temperature cycle test ............................................................................................................................... 27

7.13.1 Test procedure .............................................................................................................................................. 27

7.13.2 Test interpretation ....................................................................................................................................... 27

8 Markings .......................................................................................................................................................... 27

Annex A (informative) Classification of automotive LPG components ..................................................... 29

Annex B (normative) Requirements for the components fitted in or on the container ..................... 30

B.1 80 % stop valve.............................................................................................................................................. 30

B.1.1 Design criteria ............................................................................................................................................... 30

B.1.2 Specific design rules .................................................................................................................................... 30

B.1.3 Test procedures ............................................................................................................................................ 30

B.2 Level indicator ............................................................................................................................................... 31

B.2.1 Design criteria ............................................................................................................................................... 31

B.2.2 Specific design rules .................................................................................................................................... 31

B.2.3 Test procedures ............................................................................................................................................ 31

B.3 Float ................................................................................................................................................................... 32

B.3.1 Design criteria ............................................................................................................................................... 32

B.3.2 Specific design rules .................................................................................................................................... 32

B.3.3 Test procedures ............................................................................................................................................ 32

B.4 Pressure relief valve .................................................................................................................................... 33

B.4.1 Design criteria ............................................................................................................................................... 33

B.4.2 Specific design rules .................................................................................................................................... 33

B.4.3 Test procedures ............................................................................................................................................ 33

B.5 Remote-controlled service valve with excess flow valve ............................................................... 34

B.5.1 Design criteria ............................................................................................................................................... 34

B.5.2 Specific design rules .................................................................................................................................... 34

B.5.3 Test procedures ............................................................................................................................................ 35

B.6 Excess flow valve ........................................................................................................................................... 35

B.6.1 Design criteria ............................................................................................................................................... 35

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B.6.2 Specific design rules .................................................................................................................................... 35

B.6.3 Test procedures ............................................................................................................................................ 36

B.7 Pressure Relief Device (PRD) .................................................................................................................. 36

B.7.1 Design criteria ............................................................................................................................................... 36

B.7.2 Specific design rules for the fusible plug ............................................................................................. 36

B.7.3 Test procedures to be applied ................................................................................................................. 37

Annex C (normative) Requirements for the fuel pump ................................................................................. 38

C.1 Design criteria ............................................................................................................................................... 38

C.2 Specific design rules .................................................................................................................................... 38

C.3 Test procedures ............................................................................................................................................ 38

C.3.1 Fuel pump mounted inside the container ........................................................................................... 38

C.3.2 Fuel pump mounted outside the container ........................................................................................ 38

Annex D (normative) Requirements for the gas-tight housing .................................................................. 40

D.1 Design criteria ............................................................................................................................................... 40

D.2 Specific design rules .................................................................................................................................... 40

D.3 Applicable tests ............................................................................................................................................. 40

Annex E (normative) Requirements for the power supply bushing ......................................................... 41

E.1 Design criteria ............................................................................................................................................... 41

E.2 Specific design rules .................................................................................................................................... 41

E.3 Applicable tests ............................................................................................................................................. 41

Annex F (normative) Requirements for the non-return valve ................................................................... 42

F.1 Design criteria ............................................................................................................................................... 42

F.2 Specific design rules .................................................................................................................................... 42

F.3 Applicable tests ............................................................................................................................................. 42

Annex G (normative) Requirements for the multi-valve .............................................................................. 43

G.1 Design criteria ............................................................................................................................................... 43

G.2 Specific design rules .................................................................................................................................... 43

G.3 Applicable tests ............................................................................................................................................. 43

Annex H (normative) Requirements for the vaporizer/pressure regulator ......................................... 44

H.1 Design criteria ............................................................................................................................................... 44

H.2 Specific design rules .................................................................................................................................... 44

H.3 Applicable tests ............................................................................................................................................. 44

H.3.1 Class 0/1 .......................................................................................................................................................... 44

H.3.2 Class 2/2A ....................................................................................................................................................... 45

Annex I (normative) Requirements for the remote-controlled shut-off valve ..................................... 46

I.1 Design criteria ............................................................................................................................................... 46

I.2 Specific design rules .................................................................................................................................... 46

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I.3 Applicable tests ............................................................................................................................................. 46

Annex J (normative) Requirements for LPG injectors and the mixing unit ............................................ 47

J.1 Injector ............................................................................................................................................................. 47

J.1.1 Design criteria ............................................................................................................................................... 47

J.1.2 Specific design rules .................................................................................................................................... 47

J.1.3 Applicable tests ............................................................................................................................................. 47

J.2 Mixing unit ...................................................................................................................................................... 48

J.2.1 Design criteria ............................................................................................................................................... 48

J.2.2 Specific design rules .................................................................................................................................... 48

J.2.3 Applicable tests ............................................................................................................................................. 48

Annex K (normative) Requirements for the LPG dosage unit ..................................................................... 49

K.1 Design criteria ............................................................................................................................................... 49

K.2 Specific design rules .................................................................................................................................... 49

K.3 Applicable tests ............................................................................................................................................. 49

Annex L (normative) Requirements for the flexible hoses ........................................................................... 50

L.1 Design criteria ............................................................................................................................................... 50

L.2 Specific design rules .................................................................................................................................... 50

L.2.1 General ............................................................................................................................................................. 50

L.2.2 Rubber hose .................................................................................................................................................... 50

L.2.3 Synthetic hose ................................................................................................................................................ 50

L.2.4 Couplings ......................................................................................................................................................... 51

L.2.5 Assembly of hose and couplings .............................................................................................................. 51

L.3 Tests .................................................................................................................................................................. 51

L.3.1 Lining ................................................................................................................................................................ 51

L.3.2 Cover.................................................................................................................................................................. 52

L.3.3 Uncoupled hose ............................................................................................................................................. 54

L.3.4 The assembly of hose and couplings ...................................................................................................... 55

L.3.5 Bending test .................................................................................................................................................... 55

L.3.5.1 Test procedure .............................................................................................................................................. 55

L.3.5.2 Test interpretation ....................................................................................................................................... 56

L.3.6 Impulse test .................................................................................................................................................... 57

L.3.6.1 Test procedure .............................................................................................................................................. 57

L.3.6.2 Test interpretation ....................................................................................................................................... 57

L.4 Markings .......................................................................................................................................................... 57

Annex M (normative) Requirements for the hydrostatic relief valve ...................................................... 58

M.1 Design criteria ............................................................................................................................................... 58

M.2 Specific design rules .................................................................................................................................... 58

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M.3 Applicable tests .....................................................................................................................................

...