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EN 12078:1998

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Zero governors for gas burners and gas burning appliances
Superseded date

01-04-2011

Published date

19-08-1998

Foreword
1 Scope
2 Normative references
3 Definitions
4 Units of measurement
5 Construction requirements
   5.1 General
   5.2 Materials
   5.3 Connections
   5.4 Seals for glands for moving parts
   5.5 Pressure test nipples
6 Performance requirements
   6.1 General
   6.2 External leak-tightness
   6.3 Torsion and bending
   6.4 Durability
   6.5 Zero governor performance
   6.6 Endurance
   6.7 Lock-up pressure
   6.8 Response time
7 Test methods
   7.1 Mounting position
   7.2 Test conditions
   7.3 External leak-tightness
   7.4 Torsion and bending
   7.5 Durability
   7.6 Zero governor performance test
   7.7 Pressure drop (fully open)
   7.8 Endurance
   7.9 Lock-up pressure
   7.10 Dynamic response test
8 Marking, installation and operating instructions
   8.1 Marking
   8.2 Installation, operating and servicing instructions
   8.3 Warning notice
Annex ZA (informative) Clauses of this European Standard
         addressing essential requirements or other provisions
         of EU Directives

This standard specifies he safety, constructional and performance requirements for zero pressure governors, hereafter referred to as zero governors, intended for use with gas appliances. It also gives the test procedures for evaluating these requirements and information necessary for the purchaser and user. This standard applies to zero governors for gas-burning appliances that may be used and tested independently of these appliances. These zero governors are suitable for one or more of the fuel gases of the 1st, 2nd and 3rd families, at inlet pressures up to and including 200 mbar. This standard does not cover : a) zero governors connected directly to distribution pipework or to container that maintains a standard distribution pressure; b) zero governors intended for gas appliances to be installed out-of-doors and exposed to the environment. This standard covers type testing only.

Committee
CEN/TC 58
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Superseded
SupersededBy

Standards Relationship
SN EN 12078 : 1999 Identical
NS EN 12078 : 1ED 1999 Identical
UNI EN 12078 : 2000 Identical
PN EN 12078 : 2002 Identical
NBN EN 12078 : 1998 Identical
NEN EN 12078 : 1998 Identical
I.S. EN 12078:1999 Identical
BS EN 12078:1998 Identical
UNE-EN 12078:1999 Identical
NF EN 12078 : 1998 Identical
DIN EN 12078:1998-12 Identical

S.R. CEN/TR 16787:2014 INDUSTRIAL GAS INSTALLATION - GUIDELINE
CEN/TR 16787:2014 Industrial Gas Installation - Guideline
BS EN 746-2:2010 Industrial thermoprocessing equipment Safety requirements for combustion and fuel handling systems
I.S. EN 746-2:2010 INDUSTRIAL THERMOPROCESSING EQUIPMENT - PART 2: SAFETY REQUIREMENTS FOR COMBUSTION AND FUEL HANDLING SYSTEMS
PD CEN/TR 16787:2014 Industrial Gas Installation. Guideline
DIN EN 746-2:2011-02 Industrial thermoprocessing equipment - Part 2: Safety requirements for combustion and fuel handling systems
UNI EN 1106 : 2010 MANUALLY OPERATED TAPS FOR GAS BURNING APPLIANCES
UNI EN 1854 : 2010 PRESSURE SENSING DEVICES FOR GAS BURNERS AND GAS BURNING APPLIANCES
UNI EN 746-2 : 2011 INDUSTRIAL THERMOPROCESSING EQUIPMENT - PART 2: SAFETY REQUIREMENTS FOR COMBUSTION AND FUEL HANDLING SYSTEMS
EN 746-2:2010 Industrial thermoprocessing equipment - Part 2: Safety requirements for combustion and fuel handling systems

ISO 274:1975 Copper tubes of circular section — Dimensions
ISO 262:1998 ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
ISO 68:1973 ISO general purpose screw threads Basic profile
ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
ISO 65:1981 Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 301:2006 Zinc alloy ingots intended for castings
ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
EN 60730-1:2016 Automatic electrical controls - Part 1: General requirements
ISO 1817:2015 Rubber, vulcanized or thermoplastic Determination of the effect of liquids

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