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EN 334:2005+A1:2009

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Gas pressure regulators for inlet pressures up to 100 bar

Withdrawn date

31-07-2009

Published date

21-01-2009

Foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
  3.1 General terms and definitions of types of gas pressure
      regulators
  3.2 Terms and definitions of components of gas pressure
      regulators
  3.3 Terms, symbols and definitions of components of
      functional performance
  3.4 Terms, symbols and definitions related to design
      and tests
4 Construction requirements
  4.1 Basic requirements
  4.2 Materials
  4.3 Strength of housings
5 Functional requirements
  5.1 General
  5.2 Shell strength, external tightness and internal sealing
  5.3 Control classifications
  5.4 Final visual inspection
  5.5 Fail-close conditions
6 Gas pressure regulator sizing
  6.1 Flow behaviour
  6.2 Sizing equations for the calculation of volumetric
      flow rates of a gas pressure regulator with its
      control member in its mechanically fully open position
  6.3 Calculation of the maximum accuracy flow rate
  6.4 Inherent flow characteristics
  6.5 Calculation of volumetric flow rates for partially
      open gas pressure regulators
  6.6 Flow coefficient
7 Testing
  7.1 General
  7.2 Tests
  7.3 Type test
  7.4 Selection of test samples
  7.5 Routine tests
  7.6 Production surveillance
  7.7 Test and verification methods
8 Documentation
  8.1 Documentation related to type test
  8.2 Documentation related to the routine tests
  8.3 Documentation related to production surveillance
      in accordance with 7.6
9 Marking
  9.1 General requirements
  9.2 Markings for the various connections
  9.3 Marking of integrated safety devices
Annex A (informative) - Alternative methods for the
        determination of the accuracy class, the lock-up
        pressure class, the maximum accuracy flow rate,
        the flow coefficients and the verification of the
        hysteresis band
      A.1 General
      A.2 Test methods
      A.3 Determination of flow coefficients for larger
          capacity regulators
Annex B (informative) - Inspection certificate
Annex C (informative) - Acceptance test
Annex D (informative) - Compliance evaluation
      D.1 General
      D.2 Introduction
      D.3 Procedure
      D.4 Manufacturer's compliance evaluation
      D.5 Issue of the certificate of compliance
Annex E (informative) - Seat leakage (alternative requirement)
Annex F (normative) - Creep (venting) relief device
      F.1 General
      F.2 Terms and definitions
      F.3 Requirements
      F.4 Testing
      F.5 Type test
      F.6 Routine tests
      F.7 Documentation
      F.8 Marking
Annex G (informative) - Order specification
      G.1 General
      G.2 Minimum specifications
      G.3 Optional specifications
Annex H (normative) - Materials
      H.1 Steel materials for pressure containing parts and
          inner metallic partition walls
      H.2 Metallic materials different from steel materials
          for pressure containing parts and inner metallic
          partition walls
      H.3 Materials for fixtures, integral process and
          sensing lines, connectors and fasteners
Annex I (informative) - Glossary
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 97/23/EC
Bibliography

This document specifies constructional, functional, testing and marking requirements, sizing and documentation of gas pressure regulators used in the pressure regulating stations in accordance with EN 12186 or EN 12279:
-for inlet pressures up to 100 bar and nominal diameters up to DN 400;
-for an operating temperature range from 20 °C to +60 °C,
which operate with fuel gases of the 1st and 2nd family in accordance with EN 437 in transmission and distribution networks and also in commercial and industrial installations.
"Gas pressure regulators" hereafter will be called "regulators" except in the titles.
For standard regulators when used in pressure regulating stations complying with EN 12186 or EN 12279, Annex ZA lists all applicable Essential Requirements except the external corrosion resistance in case of environmental conditions where corrosion is likely to occur.
This document considers the following classes/types of regulators:
-class 1: operating temperature range from 10 °C to 60 °C;
-class 2: operating temperature range from 20 °C to 60 °C;
-type IS: (integral strength type);
-type DS: (differential strength type).
This document applies to regulators which use the pipeline gas as a source of control energy unassisted by any external power source.
The regulator may incorporate a creep (venting) relief device, complying with the requirements in Annex F.
The regulators complying with the requirements of this document may be declared as "in compliance with EN 334" and bear the marking "EN 334".
This document does not apply to:
-regulators upstream from/on/in domestic gas consuming appliances which are installed downstream of domestic gas meters;
-regulators incorporated into pressure-regulating devices used in service lines with volumetric flow rate

Committee
CEN/TC 235
DevelopmentNote
2005 Edition Re-Issued in January 2009 & incorporates AMD 1 2009. (03/2009)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Withdrawn
SupersededBy

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I.S. EN 14382:2005 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
EN 676:2003+A2:2008/AC:2008 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
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BS EN 14382 : 2005 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
BS EN 88-2:2007 Pressure regulators and associated safety devices for gas appliances Pressure regulators for inlet pressures above 500 mbar up to and including 5 bar
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CEN/TR 16395:2012 Gas Infrastructure - CEN/TC 234 Pressure Definitions - Guideline Document
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DIN EN 14382:2016-05 (Draft) SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
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DIN EN 1776:2016-05 GAS INFRASTRUCTURE - GAS MEASURING SYSTEMS - FUNCTIONAL REQUIREMENTS
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DIN EN 13611:2019-06 Safety and control devices for burners and appliances burning gaseous and/or liquid fuels - General requirements
I.S. EN 12186:2014 GAS INFRASTRUCTURE - GAS PRESSURE REGULATING STATIONS FOR TRANSMISSION AND DISTRIBUTION - FUNCTIONAL REQUIREMENTS
I.S. EN 13787:2002 ELASTOMERS FOR GAS PRESSURE REGULATORS AND ASSOCIATED SAFETY DEVICES FOR INLET PRESSURES UP TO 100 BAR
I.S. EN 1776:2015 GAS INFRASTRUCTURE - GAS MEASURING SYSTEMS - FUNCTIONAL REQUIREMENTS
I.S. EN 88-2:2007 PRESSURE REGULATORS AND ASSOCIATED SAFETY DEVICES FOR GAS APPLIANCES - PART 2: PRESSURE REGULATORS FOR INLET PRESSURES ABOVE 500 MBAR UP TO AND INCLUDING 5 BAR
VDI 4631:2011-02 Quality criteria for biogas plants
12/30268377 DC : 0 BS EN 50156-2 - ELECTRICAL EQUIPMENT FOR FURNACES AND ANCILLARY EQUIPMENT - PART 2: REQUIREMENTS FOR DESIGN, DEVELOPMENT AND TYPE APPROVAL OF SAFETY DEVICES AND SUBSYSTEMS
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12/30257298 DC : 0 BS EN 676 - FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
NF EN 15001-1 : 2009 GAS INFRASTRUCTURE - GAS INSTALLATION PIPEWORK WITH AN OPERATING PRESSURE GREATER THAN 0,5 BAR FOR INDUSTRIAL INSTALLATIONS AND GREATER THAN 5 BAR FOR INDUSTRIAL AND NON-INDUSTRIAL INSTALLATIONS - PART 1: DETAILED FUNCTIONAL REQUIREMENTS FOR DESIGN, MATERIALS, CONSTRUCTION, INSPECTION AND TESTING
ISO 13577-3:2016 Industrial furnaces and associated processing equipment Safety Part 3: Generation and use of protective and reactive atmosphere gases
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DIN EN 746-2:2011-02 Industrial thermoprocessing equipment - Part 2: Safety requirements for combustion and fuel handling systems
DIN EN 12186:2014-12 GAS INFRASTRUCTURE - GAS PRESSURE REGULATING STATIONS FOR TRANSMISSION AND DISTRIBUTION - FUNCTIONAL REQUIREMENTS
DIN EN 676:2012-03 (Draft) AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
UNE-EN 15001-1:2010 Gas Infrastructure - Gas installation pipework with an operating pressure greater than 0,5 bar for industrial installations and greater than 5 bar for industrial and non-industrial installations - Part 1: Detailed functional requirements for design, materials, construction, inspection and testing
DIN EN 676:2008-11 Automatic forced draught burners for gaseous fuels (includes Amendment A2:2008)
ONORM EN 676 : 2008 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
UNI EN 12186 : 2014 GAS INFRASTRUCTURE - GAS PRESSURE REGULATING STATIONS FOR TRANSMISSION AND DISTRIBUTION - FUNCTIONAL REQUIREMENTS
UNI EN 15001-1 : 2009 GAS INFRASTRUCTURE - GAS INSTALLATION PIPEWORK WITH AN OPERATING PRESSURE GREATER THAN 0,5 BAR FOR INDUSTRIAL INSTALLATIONS AND GREATER THAN 5 BAR FOR INDUSTRIAL AND NON-INDUSTRIAL INSTALLATIONS - PART 1: DETAILED FUNCTIONAL REQUIREMENTS FOR DESIGN, MATERIALS, CONSTRUCTION, INSPECTION AND TESTING
UNI EN 14382 : 2009 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
UNI EN 746-2 : 2011 INDUSTRIAL THERMOPROCESSING EQUIPMENT - PART 2: SAFETY REQUIREMENTS FOR COMBUSTION AND FUEL HANDLING SYSTEMS
I.S. EN 12279:2000 GAS SUPPLY SYSTEMS - GAS PRESSURE REGULATING INSTALLATIONS ON SERVICE LINES - FUNCTIONAL REQUIREMENTS
UNI EN 676 : 2008 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
UNI CEN/TR 16395 : 2014 GAS INFRASTRUCTURE - CEN/TC 234 PRESSURE DEFINITIONS GUIDELINE DOCUMENT
PD CEN/TR 16787:2014 Industrial Gas Installation. Guideline
PREN 676 : DRAFT 2012 FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
S.R. CEN/TR 16395:2012 GAS INFRASTRUCTURE - CEN/TC 234 PRESSURE DEFINITIONS - GUIDELINE DOCUMENT
DIN EN 12261:2007-07 GAS METERS - TURBINE GAS METERS
17/30360051 DC : 0 BS EN 13611 - SAFETY AND CONTROL DEVICES FOR BURNERS AND APPLIANCES BURNING GASEOUS AND/OR LIQUID FUELS - GENERAL REQUIREMENTS
UNE-EN 13611:2016 Safety and control devices for burners and appliances burning gaseous and/or liquid fuels - General requirements
DIN EN 13611:2016-09 SAFETY AND CONTROL DEVICES FOR BURNERS AND APPLIANCES BURNING GASEOUS AND/OR LIQUID FUELS - GENERAL REQUIREMENTS
I.S. EN 15001-1:2009 GAS INFRASTRUCTURE - GAS INSTALLATION PIPEWORK WITH AN OPERATING PRESSURE GREATER THAN 0,5 BAR FOR INDUSTRIAL INSTALLATIONS AND GREATER THAN 5 BAR FOR INDUSTRIAL AND NON-INDUSTRIAL INSTALLATIONS - PART 1: DETAILED FUNCTIONAL REQUIREMENTS FOR DESIGN, MATERIALS, CONSTRUCTION, INSPECTION AND TESTING
DIN EN 88-2:2008-03 Pressure regulators and associated safety devices for gas appliances - Part 2: Pressure regulators for inlet pressures above 500 mbar up to and including 5 bar
BS EN 12186:2014 Gas infrastructure. Gas pressure regulating stations for transmission and distribution. Functional requirements
UNE-EN 1776:2017 Gas infrastructure - Gas measuring systems - Functional requirements
BS EN 1776:2015 Gas infrastructure. Gas measuring systems. Functional requirements
BS EN 303-7:2006 Heating boilers Gas-fired central heating boilers equipped with a forced draught burner of nominal heat output not exceeding 1000 kW
ISO 22734-2:2011 Hydrogen generators using water electrolysis process Part 2: Residential applications
BS EN 12279:2000 Gas supply systems. Gas pressure regulating installations on service lines. Functional requirements
BS EN 676 : 2003 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
BS EN 13787:2001 Elastomers for gas pressure regulators and associated safety devices for inlet pressures up to 100 bar
BS ISO 13577-2:2014 Industrial furnaces and associated processing equipment. Safety Combustion and fuel handling systems
BS ISO 22734-2:2011 Hydrogen generators using water electrolysis process Residential applications
EN 15001-1:2009 Gas Infrastructure - Gas installation pipework with an operating pressure greater than 0,5 bar for industrial installations and greater than 5 bar for industrial and non-industrial installations - Part 1: Detailed functional requirements for design, materials, construction, inspection and testing
EN 746-2:2010 Industrial thermoprocessing equipment - Part 2: Safety requirements for combustion and fuel handling systems
EN 1776:2015 Gas infrastructure - Gas measuring systems - Functional requirements
EN 14382:2005+A1:2009/AC:2009 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
EN 13787:2001 Elastomers for gas pressure regulators and associated safety devices for inlet pressures up to 100 bar
EN 88-2:2007 Pressure regulators and associated safety devices for gas appliances - Part 2: Pressure regulators for inlet pressures above 500 mbar up to and including 5 bar
EN 303-7:2006 Heating boilers - Part 7: Gas-fired central heating boilers equipped with a forced draught burner of nominal heat output not exceeding 1 000 kW
04/30111048 DC : 0 EN 88-2 - PRESSURE GOVERNORS AND ASSOCIATED SAFETY DEVICES FOR GAS APPLIANCES - PART 2 - PRESSURE GOVERNORS FOR INLET PRESSURES BETWEEN 0.5 BAR AND 5 BAR
PREN 88-2 : DRAFT 2014 SAFETY AND CONTROL DEVICES FOR GAS BURNERS AND GAS BURNING APPLIANCES - PART 2: PRESSURE REGULATORS FOR INLET PRESSURES ABOVE 50 KPA UP TO AND INCLUDING 500 KPA AND ASSOCIATED SAFETY DEVICES
BS EN 15001-1:2009 Gas infrastructure. Gas installation pipework with an operating pressure greater than 0,5 bar for industrial installations and greater than 5 bar for industrial and non-industrial installations Detailed functional requirements for design, materials, construction, inspection and testing
I.S. EN 50156-2:2015 ELECTRICAL EQUIPMENT FOR FURNACES AND ANCILLARY EQUIPMENT - PART 2: REQUIREMENTS FOR DESIGN, DEVELOPMENT AND TYPE APPROVAL OF SAFETY DEVICES AND SUBSYSTEMS
17/30356728 DC : 0 BS EN 12261 - GAS METERS - TURBINE GAS METERS
PREN 12261 : DRAFT 2017 GAS METERS - TURBINE GAS METERS
I.S. EN 12261:2002 GAS METERS - TURBINE GAS METERS
BS EN 13611:2015 Safety and control devices for burners and appliances burning gaseous and/or liquid fuels. General requirements
PREN 13611 : DRAFT 2017 SAFETY AND CONTROL DEVICES FOR BURNERS AND APPLIANCES BURNING GASEOUS AND/OR LIQUID FUELS - GENERAL REQUIREMENTS
EN 13611:2015/AC:2016 SAFETY AND CONTROL DEVICES FOR BURNERS AND APPLIANCES BURNING GASEOUS AND/OR LIQUID FUELS - GENERAL REQUIREMENTS
ISO 13577-2:2014 Industrial furnaces and associated processing equipment — Safety — Part 2: Combustion and fuel handling systems
I.S. EN 676:2003 AUTOMATIC FORCED DRAUGHT BURNERS FOR GASEOUS FUELS
I.S. EN 13611:2015/AC:2016 SAFETY AND CONTROL DEVICES FOR BURNERS AND APPLIANCES BURNING GASEOUS AND/OR LIQUID FUELS - GENERAL REQUIREMENTS
EN 50156-2:2015 Electrical equipment for furnaces and ancillary equipment - Part 2: Requirements for design, development and type approval of safety devices and subsystems
DIN EN 303-7:2007-05 Heating boilers - Part 7: Gas-fired central heating boilers equipped with a forced draught burner of nominal heat output not exceeding 1 000 kW
EN 12279:2000/A1:2005 GAS SUPPLY SYSTEMS - GAS PRESSURE REGULATING INSTALLATIONS ON SERVICE LINES - FUNCTIONAL REQUIREMENTS

EN 12732:2013+A1:2014 Gas infrastructure - Welding steel pipework - Functional requirements
EN 60534-8-3:2011 Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
EN 1759-3:2003/AC:2004 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, CLASS DESIGNATED - PART 3: COPPER ALLOY FLANGES
ISO 9606-4:1999 Approval testing of welders — Fusion welding — Part 4: Nickel and nickel alloys
ISO/IEC 17050-1:2004 Conformity assessment Supplier's declaration of conformity Part 1: General requirements
ISO 9606-2:2004 Qualification test of welders — Fusion welding — Part 2: Aluminium and aluminium alloys
EN 10226-2:2005 Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation
EN 60534-1:2005 Industrial-process control valves - Part 1: Control valve terminology and general considerations
EN ISO 15613:2004 Specification and qualification of welding procedures for metallic materials - Qualification based on pre-production welding test (ISO 15613:2004)
ISO 15614-2:2005 Specification and qualification of welding procedures for metallic materials Welding procedure test Part 2: Arc welding of aluminium and its alloys
EN 1349:2009 Industrial process control valves
EN ISO 15612:2004 Specification and qualification of welding procedures for metallic materials - Qualification by adoption of a standard welding procedure (ISO 15612:2004)
ISO 15610:2003 Specification and qualification of welding procedures for metallic materials — Qualification based on tested welding consumables
EN 1759-1:2004 Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24
IEC 60534-3-1:2000 Industrial-process control valves - Part 3-1: Dimensions - Face-to-face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, angle pattern control valves
EN 1759-4:2003 Flanges and their joint - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 4: Aluminium alloy flanges
EN 45011:1998 General requirements for bodies operating product certification systems (ISO/IEC Guide 65:1996)
EN 1092-3:2003/AC:2007 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, PN DESIGNATED - PART 3: COPPER ALLOY FLANGES
EN 12516-1:2014 Industrial valves - Shell design strength - Part 1: Tabulation method for steel valve shells
EN ISO 9606-4:1999 Approval testing of welders - Fusion welding - Part 4: Nickel and nickel alloys (ISO 9606-4:1999)
EN 12516-4:2014 Industrial valves - Shell design strength - Part 4: Calculation method for valve shells manufactured in metallic materials other than steel
ISO 6708:1995 Pipework components Definition and selection of DN (nominal size)
EN 45011 : 1998 GENERAL REQUIREMENTS FOR BODIES OPERATING PRODUCT CERTIFICATION SYSTEMS
EN 473:2008 Non-destructive testing - Qualification and certification of NDT personnel - General principles
EN 10045-1 : 1990 METALLIC MATERIALS - CHARPY IMPACT TEST - PART 1: TEST METHOD
ISO 15612:2004 Specification and qualification of welding procedures for metallic materials Qualification by adoption of a standard welding procedure
EN ISO 6708:1995 Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995)
EN ISO 15611:2003 Specification and qualification of welding procedures for metallic materials - Qualification based on previous welding experience (ISO 15611:2003)
ISO 15614-1:2017 Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
EN 13445-4 : 2014 COR 2017 UNFIRED PRESSURE VESSELS - PART 4: FABRICATION
EN 12279:2000/A1:2005 GAS SUPPLY SYSTEMS - GAS PRESSURE REGULATING INSTALLATIONS ON SERVICE LINES - FUNCTIONAL REQUIREMENTS
ISO 15609-1:2004 Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding
EN 1092-4:2002 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 4: Aluminium alloy flanges
ISO 15611:2003 Specification and qualification of welding procedures for metallic materials — Qualification based on previous welding experience
EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
ISO 5752:1982 Metal valves for use in flanged pipe systems Face-to-face and centre-to-face dimensions
EN 61672-1:2013 Electroacoustics - Sound level meters - Part 1: Specifications
EN ISO 9001:2015 Quality management systems - Requirements (ISO 9001:2015)
EN ISO 15614-2:2005 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 2: Arc welding of aluminium and its alloys (ISO 15614-2:2005)
EN ISO 9606-2:2004 Qualification test of welders - Fusion welding - Part 2: Aluminium and aluminium alloys (ISO 9606-2:2004)
ISO 175:2010 Plastics Methods of test for the determination of the effects of immersion in liquid chemicals
EN 60534-2-1:2011/AC:2015 INDUSTRIAL-PROCESS CONTROL VALVES - PART 2-1: FLOW CAPACITY - SIZING EQUATIONS FOR FLUID FLOW UNDER INSTALLED CONDITIONS (IEC 60534-2-1:2011)
IEC 60534-3-2:2001 Industrial-process control valves - Part 3-2: Dimensions - Face-to-face dimensions for rotary control valves except butterfly valves
EN 60534-3-2:2001 Industrial-process control valves - Part 3-2: Dimensions - Face-to-face dimensions for rotary control valves except butterfly valves
EN 10204:2004 Metallic products - Types of inspection documents
ISO 9001:2015 Quality management systems — Requirements
EN 60534-2-3:2016 Industrial-process control valves - Part 2-3: Flow capacity - Test procedures
EN ISO 15609-1:2004 Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO 15609-1:2004)
ASME B16.34 : 2017 VALVES - FLANGED, THREADED, AND WELDING END
EN 14382:2005+A1:2009/AC:2009 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
ISO 3419:1981 Non-alloy and alloy steel butt-welding fittings
EN 60534-3-1:2000/corrigendum:2000 INDUSTRIAL-PROCESS CONTROL VALVES - PART 3-1: DIMENSIONS - FACE-TO-FACE DIMENSIONS FOR FLANGED, TWO-WAY, GLOBE-TYPE, STRAIGHT PATTERN AND CENTRE-TO-FACE DIMENSIONS FOR FLANGED, TWO-WAY, GLOBE-TYPE, ANGLE PATTERN CONTROL VALVES
MSS SP 55 : 2011 QUALITY STANDARD FOR STEEL CASTINGS FOR VALVES, FLANGES, FITTINGS, AND OTHER PIPING COMPONENTS - VISUAL METHOD FOR EVALUATION OF SURFACE IRREGULARITIES
ISO/IEC Guide 65:1996 General requirements for bodies operating product certification systems
IEC 60534-2-3:2015 Industrial-process control valves - Part 2-3: Flow capacity - Test procedures
EN ISO/IEC 17050-1:2010 Conformity assessment - Supplier's declaration of conformity - Part 1: General requirements (ISO/IEC 17050-1:2004, corrected version 2007-06-15)
ISO 15613:2004 Specification and qualification of welding procedures for metallic materials Qualification based on pre-production welding test
EN 12516-2:2014 Industrial valves - Shell design strength - Part 2: Calculation method for steel valve shells
EN ISO 15610:2003 Specification and qualification of welding procedures for metallic materials - Qualification based on tested welding consumables (ISO 15610:2003)
ISO 15607:2003 Specification and qualification of welding procedures for metallic materials General rules
IEC 60534-2-1:2011 Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions
EN 1418:1997 Welding personnel - Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials
EN 1092-2:1997 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges
EN 970:1997 Non-destructive examination of fusion welds - Visual examination
EN 10226-1:2004 Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and designation
IEC 60534-1:2005 Industrial-process control valves - Part 1: Control valve terminology and general considerations
IEC 60534-8-3:2010 Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method
EN ISO 15607:2003 Specification and qualification of welding procedures for metallic materials - General rules (ISO 15607:2003)
EN ISO 9606-3:1999 Approval testing of welders - Fusion welding - Part 3: Copper and copper alloys (ISO 9606-3:1999)
IEC 60534-3:1976 Industrial-process control valves. Part 3: Dimensions - Section One: Face-to-face dimensions for flanged, two-way, globe-type control valves
EN ISO 175:2010 Plastics - Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:2010)
ISO 1817:2015 Rubber, vulcanized or thermoplastic Determination of the effect of liquids
1997/23/EC : 1997 DIRECTIVE 97/23/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 29 MAY 1997 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES CONCERNING PRESSURE EQUIPMENT
ISO 9606-3:1999 Approval testing of welders — Fusion welding — Part 3: Copper and copper alloys
EN 287-1:2011 Qualification test of welders - Fusion welding - Part 1: Steels
EN 12186:2014 Gas infrastructure - Gas pressure regulating stations for transmission and distribution - Functional requirements

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