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UNI EN 437 : 2009

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

TEST GASES - TEST PRESSURES - APPLIANCE CATEGORIES
Superseded date

08-19-2022

Published date

01-01-2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Gases
  4.1 Classification
  4.2 Test gases
5 Test pressures
6 Classification of appliances
  6.1 Appliance categories
      6.1.1 General
      6.1.2 Category I
      6.1.3 Category II
      6.1.4 Category III
  6.2 Operations permitted for a change of gas or pressure,
      adjustment and regulating devices
7 Choice of test gases and test pressures
8 Marking
Annex A (normative) Conditions for preparation of the test
        gases
Annex B (informative) National situations
   B.1 General
   B.2 Categories listed in the body of the standard marketed
       in the different countries
   B.3 Appliance supply pressures corresponding to the
       categories given in B.1 and B.2
   B.4 Special categories marketed nationally or locally
   B.5 Test gases and test pressures corresponding to the
       special categories given in B.4
   B.6 Special conditions
Annex C (informative) Guidelines for extension to other
        categories
Annex D (informative) National situation of countries whose
        national bodies are CEN affiliate members
   D.1 General
   D.2 Categories listed in the body of the standard and
       marketed in the different countries
Bibliography

Describes the test gases, test pressures and categories of appliances relative to the use of gaseous fuels of the first, second and third families.

DocumentType
Standard
PublisherName
Ente Nazionale Italiano di Unificazione (UNI)
Status
Superseded
SupersededBy
Supersedes

UNI 11363 : 2010 COMBUSTIBLE GASES - MEASUREMENTS OF FLOW RATE AND QUANTITY - METROLOGICAL TRACEABILITY
UNI 9167 : 2009 INITIAL PRESSURE AND REDUCTION PLANTS FOR NATURAL GAS - DESIGN, CONSTRUCTION AND TESTING
UNI 10738 : 2012 EXISTING GAS PLANTS FOR DOMESTIC USE - GUIDELINES FOR CHECKING THEIR SUITABILITY TO SAFE OPERATION
UNI 11522 : 2014 COMBUSTIBLE GAS AND CARBON MONOXIDE DETECTORS FOR DOMESTIC AND SIMILAR PREMISES - INSTALLATION AND MAINTENANCE
UNI/TS 11343 : 2009 GAS PLANTS FOR DOMESTIC USE - GAS PLANTS FOR DOMESTIC USES SUPPLIED BY DISTRIBUTION NETWORKS, BY LPG CYLINDERS AND LPG STORAGE TANKS, PERFORMED WITH MULTILAYER PIPES - DESIGN, INSTALLATION AND MAINTENANCE
UNI 11353 : 2010 STAINLESS STEEL CORRUGATED FLEXIBLE SAFETY HOSE ASSEMBLIES FOR THE CONNECTION OF GAS APPLIANCES FOR DOMESTIC AND SIMILAR USES - SAFETY REQUIREMENTS
UNI 7140 : 2013 GAS APPLIANCES FOR DOMESTIC USE - NON-METALLIC FLEXIBLE HOSES FOR GAS APPLIANCES FOR DOMESTIC USE AND SIMILAR
UNI 7133-2 : 2014 GAS ODORISATION FOR DOMESTIC AND SIMILAR USES - PART 2: REQUIREMENTS, CHECK AND MANAGEMENT
UNI 10619-2 : 2014 GAS PRESSURE CONTROL SYSTEMS AND/OR GAS MEASUREMENT INSTALLATIONS FOR INLET MAX PRESSURE UP TO 12 BAR FOR INDUSTRIAL AND DOMESTIC USE - PART 2: DESIGN, CONSTRUCTION AND TESTING - EQUIPMENT FOR GAS CONTROL
UNI 11137 : 2012 GAS PLANTS FOR DOMESTIC AND SIMILAR USES - GUIDELINES FOR TEST AND FOR THE RESTORATION OF THE TIGHTNESS OF INNER PLANTS - GENERAL PRESCRIPTIONS AND REQUIREMENTS FOR THE SECOND AND THIRD FAMILY GASES
UNI 10619-3 : 2014 GAS PRESSURE CONTROL SYSTEMS AND/OR GAS MEASUREMENT INSTALLATIONS FOR INLET MAX PRESSURE UP TO 12 BAR FOR INDUSTRIAL AND DOMESTIC USE - PART 3: DESIGN, CONSTRUCTION AND TESTING - GAS MEASUREMENT INSTALLATIONS
UNI/TR 11426 : 2011 USE OF LPG PLANTS NOT FED BY A DISTRIBUTION NETWORK AT TEMPORARY OUTDOOR EVENTS - DESIGN, INSTALLATION, MAINTENANCE AND OPERATION
UNI 10682 : 2010 SMALL BULK LPG FACILITIES FOR DISTRIBUTION NETWORK - DESIGN, CONSTRUCTION, INSTALLATION, TESTING AND OPERATION
UNI 11554 : 2014 NON-REGULATED PROFESSIONS - GAS OPERATORS WORKING ON GAS PLANTS SUPPLIED BY DISTRIBUTION NETWORK - KNOWLEDGE, SKILL AND COMPETENCE REQUIREMENTS
UNI 10619-1 : 2014 GAS PRESSURE CONTROL SYSTEMS AND/OR GAS MEASUREMENT INSTALLATIONS FOR INLET MAX PRESSURE UP TO 12 BAR FOR INDUSTRIAL AND DOMESTIC USE - PART 1: DESIGN, CONSTRUCTION AND TESTING - GENERAL

EN ISO 13443:2005 Natural gas - Standard reference conditions (ISO 13443:1996 including Corrigendum 1:1997)
ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
EN ISO 3166-1:2014 Codes for the representation of names of countries and their subdivisions - Part 1: Country codes (ISO 3166-1:2013)
ISO 13443:1996 Natural gas Standard reference conditions
ISO 3166-1:2013 Codes for the representation of names of countries and their subdivisions Part 1: Country codes
EN ISO 6976:2016 Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)

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