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BS EN 13786 : 2004

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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
Available format(s)

Hardcopy , PDF

Superseded date

31-08-2013

Language(s)

English

Published date

01-01-2004

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Terms and definitions
  3.1 General terms and definitions
  3.2 Terms and definitions concerning gas
  3.3 Terms and definitions concerning pressures
  3.4 Terms and definitions concerning rates
4 Types of automatic change over devices
  4.1 Introduction
  4.2 Automatic change over devices for installations
      where the final regulator supplies a pressure
      specified in EN 437
  4.3 Other automatic change over devices installation
5 Constructional characteristics
  5.1 General
  5.2 Materials
  5.3 Special requirements
  5.4 Mechanical strength
  5.5 Soundness
  5.6 Mechanical endurance
  5.7 Resistance to humidity changes
  5.8 Resistance to corrosion
6 Performance characteristics
  6.1 General
  6.2 Operational limit characteristics (regulation function)
  6.3 Operational limit characteristics (Change over function)
7 Test methods
  7.1 General conditions
  7.2 Verification of constructional characteristics
  7.3 Verification of performance characteristics
8 Marking, packaging, instructions
  8.1 General
  8.2 Marking of the device
  8.3 Packaging
  8.4 Instructions for use and maintenance
Annex A (normative) - Special requirements for automatic
        change over devices fitted with pressure or rate
        operated safety valves
      A.1 Change over devices fitted with an over-pressure
           relief
      A.2 Automatic change over device fitted with an
           over-pressure shut off safety valve
      A.3 Automatic change over device fitted with an
           under-pressure shut off safety device
      A.4 Automatic change over devices fitted with an
           excess flow valve
      A.5 Automatic change over devices fitted with a
           regulated pressure limiter
Annex B (normative) - Special requirements for automatic
        change over devices and automatic change over
        device systems for caravans, motor caravans or
        fresh water boats
Annex C (normative) - Special requirements for low pressure
        automatic change over devices under extreme
        temperature conditions (temperatures below
        -20 degrees C)
Annex D (normative) - Method for measuring leaks at test
        pressures less than or equal to 16 bar
      D.1 Scope
      D.2 Diagram of the test
      D.3 Coefficient K
      D.4 Measurement of the leak
      D.5 Checks
Annex E (normative) - Complementary test requirements
        for non metallic thermoplastic or thermal setting
        materials used in the construction of automatic
        change over devices
      E.1 Scope
      E.2 Materials
      E.3 Special conditions for carrying out the test
           mentioned in the body of the standard
      E.4 Special requirements
      E.5 Sampling and order of tests
Annex F (normative) - Requirements for elastomeric
         reinforced diaphgrams
Annex G (normative) - Inlet connections
Annex H (normative) - Outlet connections
Annex I (normative) - Test method for resistance to
        corrosion
      I.1 Principle
      I.2 Reagents
      I.3 Apparatus
      I.4 Test method
      I.5 Results
Annex J (normative) - Automatic change over device
        and change over device systems for LPG
        cylinders to supply appliances installed in
        seawater boats
      J.1 Scope
      J.2 General
      J.3 Maximum guaranteed rate
      J.4 Change over device and change over device
           systems fitted with a pressure relief valve
      J.5 Vent
      J.6 Connections
      J.7 Material
      J.8 Resistance to corrosion
      J.9 Marking
      J.10 Instructions for use and maintenance
Annex ZA (informative) - Clauses of this European
          Standard addressing essential requirements
          or other provisions of EU Directives
Bibliography

Describes the constructional and operational characteristics, the safety requirements and test methods, and the marking of automatic change over devices with a capacity of less than or equal to 100 kg/h and having a maximum regulated pressure of less than or equal to 4 bar for butane, propane or their mixtures only in the vapour phase.

Committee
GSE/24
DevelopmentNote
Supersedes 99/718299 DC. (10/2004) Together with BS EN 13785 and BS EN 12864 supersedes BS 3016(1989). (04/2005) Supersedes 06/30150551 DC. 2004 Edition Re-Issued in April 2009 & incorporates AMD 1 2008. (04/2009)
DocumentType
Standard
Pages
146
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

13/30199128 DC : 0 BS 6891 - SPECIFICATION FOR THE INSTALLATION AND MAINTENANCE OF LOW PRESSURE GAS INSTALLATION PIPEWORK OF UP TO 35 MM (R1[1/4]) IN PREMISES
BS 6891:2015 Specification for the installation and maintenance of low pressure gas installation pipework of up to 35 mm (R1¼) on premises
PD 54823:2016 Guidance for the design, commissioning and maintenance of LPG systems in small craft

EN 12864:2001/A3:2009 LOW-PRESSURE, NON ADJUSTABLE REGULATORS HAVING A MAXIMUM OUTLET PRESSURE OF LESS THAN OR EQUAL TO 200 MBAR, WITH A CAPACITY OF LESS THAN OR EQUAL TO 4 KG/H, AND THEIR ASSOCIATED SAFETY DEVICES FOR BUTANE, PROPANE OR THEIR MIXTURES
ISO 7005-2:1988 Metallic flanges — Part 2: Cast iron flanges
EN ISO 75-3:2004/AC:2006 Plastics - Determination of temperature of deflection under load - Part 3: High-strength thermosetting laminates and long-fibre-reinforced plastics (ISO 75-3:2004)
EN ISO 180:2000/A2:2013 PLASTICS - DETERMINATION OF IZOD IMPACT STRENGTH (ISO 180:2000/AMD 2:2013)
ISO 527-4:1997 Plastics Determination of tensile properties Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites
EN ISO 527-4:1997 PLASTICS - DETERMINATION OF TENSILE PROPERTIES - PART 4: TEST CONDITIONS FOR ISOTROPIC AND ORTHOTROPIC FIBRE-REINFORCED PLASTIC COMPOSITES
EN ISO 4892-3:2016 Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 4892-3:2016)
EN ISO 9773:1998/A1:2003 Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source - Amendment 1: Specimens (ISO 9773:1998/Amd 1:2003)
ISO 9773:1998 Plastics — Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source
ISO 565:1990 Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings
EN ISO 178:2010/A1:2013 PLASTICS - DETERMINATION OF FLEXURAL PROPERTIES (ISO 178:2010/AMD 1:2013)
EN ISO 7253 : 2001 PAINTS AND VARNISHES - DETERMINATION OF RESISTANCE TO NEUTRAL SALT SPRAY (FOG)
EN ISO 3166-1:2014 Codes for the representation of names of countries and their subdivisions - Part 1: Country codes (ISO 3166-1:2013)
EN ISO 228-1:2003 Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation (ISO 228-1:2000)
ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
ISO 180:2000 Plastics Determination of Izod impact strength
ISO 4892-3:2016 Plastics Methods of exposure to laboratory light sources Part 3: Fluorescent UV lamps
EN 1949:2011+A1:2013 Specification for the installation of LPG systems for habitation purposes in leisure accommodation vehicles and accommodation purposes in other vehicles
EN 12164:2016 Copper and copper alloys - Rod for free machining purposes
EN 13785:2005+A1:2008 Regulators with a capacity of up to and including 100 kg/h, having a maximum nominal outlet pressure of up to and including 4 bar, other than those covered by EN 12864 and their associated safety devices for butane, propane or their mixtures
ISO 9227:2017 Corrosion tests in artificial atmospheres — Salt spray tests
ISO 3166-1:2013 Codes for the representation of names of countries and their subdivisions Part 1: Country codes
EN 549:1994 Rubber materials for seals and diaphragms for gas appliances and gas equipment
EN 12165:2016 COPPER AND COPPER ALLOYS - WROUGHT AND UNWROUGHT FORGING STOCK
ISO 301:2006 Zinc alloy ingots intended for castings
ISO 178:2010 Plastics Determination of flexural properties
ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
1990/396/EEC : 1990 COUNCIL DIRECTIVE OF 29 JUNE 1990 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO APPLIANCES BURNING GASEOUS FUELS

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