• EN ISO 6708:1995

    Current The latest, up-to-date edition.

    Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995)

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    Published date:  01-07-1995

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Definition
    3 DN Series

    Abstract - (Show below) - (Hide below)

    Cancels and replaces the first edition (1980). Gives the definition of DN (nominal size) when applied to components of a pipework system, as specified in those standards which use the DN designation system. Gives a list of preferred DN values.

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 74
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    EN 14423:2013+A1:2016 Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar
    13/30255705 DC : 0 BS EN 1514-2 - FLANGES AND THEIR JOINTS - GASKETS FOR PN-DESIGNATED FLANGES - PART 2: SPIRAL WOUND GASKETS FOR USE WITH STEEL FLANGES
    ONORM EN ISO 4126-2 : 2006 SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 2: BURSTING DISC SAFETY DEVICES
    99/709740 DC : DRAFT JUN 99 PREN 10253-2 - BUTT WELDING PIPE FITTINGS - PART 2: WROUGHT CARBON AND FERRITIC ALLOY STEELS WITH SPECIFIC INSPECTION REQUIREMENTS
    BS EN 10253-2:2007 Butt-welding pipe fittings Non alloy and ferritic alloy steels with specific inspection requirements
    17/30350901 DC : 0 BS EN 215 - THERMOSTATIC RADIATOR VALVES - REQUIREMENTS AND TEST METHODS
    03/302503 DC : DRAFT FEB 2003 BS EN 14276-2 - PRESSURE EQUIPMENT FOR REFRIGERATING SYSTEMS AND HEAT PUMPS - PART 2: PIPING - GENERAL REQUIREMENTS
    12/30254917 DC : DRAFT JAN 2012 BS EN 877 - CAST IRON PIPES AND FITTINGS, THEIR JOINTS AND ACCESSORIES FOR THE EVACUATION OF WATER FROM BUILDINGS - REQUIREMENTS, TEST METHODS AND QUALITY ASSURANCE
    01/709787 DC : DRAFT JUN 2001 PREN ISO 16138 - INDUSTRIAL VALVES - DIAPHRAGM VALVES OF THERMOPLASTIC MATERIALS
    13/30279702 DC : 0 BS EN 331 - MANUALLY OPERATED BALL VALVES AND CLOSED BOTTOM TAPER PLUG VALVES FOR GAS INSTALLATIONS FOR BUILDINGS
    13/30275593 DC : 0 BS EN 14432 - TANKS FOR THE TRANSPORT OF DANGEROUS GOODS - TANK EQUIPMENT FOR THE TRANSPORT OF LIQUID CHEMICALS AND LIQUEFIED GASES - PRODUCT DISCHARGE AND AIR INLET VALVES
    03/104248 DC : DRAFT FEB 2003 EN 14628 - DUCTILE IRON PIPES, FITTINGS AND ACCESSORIES - EXTERNAL POLYETHYLENE COATING FOR PIPES IN HIGHLY AGGRESSIVE SOILS - REQUIREMENTS AND TEST METHODS
    05/30132854 DC : DRAFT APR 2005 EN 1092-1 - FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, PN DESIGNATED - PART 1: STEEL FLANGES
    06/30157192 DC : 0 BS EN 736-3 - VALVES - TERMINOLOGY - PART 3: DEFINITION OF TERMS
    BS EN 16617:2015 Pipework. Corrugated metal hose assemblies for combustible gas. Performance requirements, testing and marking
    13/30280746 DC : 0 BS EN 14433 - TANKS FOR THE TRANSPORT OF DANGEROUS GOODS - TANK EQUIPMENT FOR THE TRANSPORT OF LIQUID CHEMICALS AND LIQUEFIED GASES - FOOT VALVES
    01/716091 DC : DRAFT DEC 2001 ISO 4126-4.3 - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 4: PILOT-OPERATED SAFETY VALVES
    DIN EN 16617:2015-07 PIPEWORK - CORRUGATED METAL HOSE ASSEMBLIES FOR COMBUSTIBLE GAS - PERFORMANCE REQUIREMENTS, TESTING AND MARKING
    DIN CEN/TS 13547:2007-02 INDUSTRIAL VALVES - COPPER ALLOY BALL VALVES
    10/30234616 DC : 0 BS EN 14420-7 - HOSE FITTINGS WITH CLAMP UNITS - PART 7: CAM LOCKING COUPLINGS
    01/709788 DC : DRAFT JUN 2001 PREN ISO 21787 - INDUSTRIAL VALVES - GLOBE VALVES OF THERMOPLASTIC MATERIALS
    01/703999 DC : DRAFT FEB 2001 EN ISO 10380 PIPEWORK - CORRUGATED METAL HOSES AND HOSE ASSEMBLIES
    01/709786 DC : DRAFT JUN 2001 PREN ISO 16137 - INDUSTRIAL VALVES - CHECK VALVES OF THERMOPLASTIC MATERIALS
    UNE-EN 13547:2014 Industrial valves - Copper alloy ball valves
    DD CEN/TS 13547:2006 Industrial valves. Copper alloy ball valves
    PREN 14276-2 : DRAFT 2017 PRESSURE EQUIPMENT FOR REFRIGERATING SYSTEMS AND HEAT PUMPS - PART 2: PIPING - GENERAL REQUIREMENTS
    I.S. EN 378-2:2016 REFRIGERATING SYSTEMS AND HEAT PUMPS - SAFETY AND ENVIRONMENTAL REQUIREMENTS - PART 2: DESIGN, CONSTRUCTION, TESTING, MARKING AND DOCUMENTATION
    I.S. EN 13547:2013 INDUSTRIAL VALVES - COPPER ALLOY BALL VALVES
    BS EN ISO 4126-2:2003 Safety devices for protection against excessive pressure Bursting disc safety devices
    EN 12261:2018 Gas meters - Turbine gas meters
    EN 545:2010 Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test methods
    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
    I.S. EN 488:2015 DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - STEEL VALVE ASSEMBLY FOR STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE
    I.S. EN 215:2004 THERMOSTATIC RADIATOR VALVES - REQUIREMENTS AND TEST METHODS
    EN 736-3:2008 Valves - Terminology - Part 3: Definition of terms
    DIN EN 1514-2 E : 2014 FLANGES AND THEIR JOINTS - GASKETS FOR PN-DESIGNATED FLANGES - PART 2: SPIRAL WOUND GASKETS FOR USE WITH STEEL FLANGES
    DIN EN 14268 E : 2005 IRRIGATION TECHNIQUES - METERS FOR IRRIGATION WATER
    DIN EN 1759-1:2005-02 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24
    DIN EN 1514-8 E : 2005 FLANGES AND THEIR JOINTS - DIMENSIONS OF GASKETS FOR PN-DESIGNATED FLANGES - PART 8: POLYMERIC O-RING GASKETS FOR GROOVED FLANGES
    DIN EN 1514-6 E : 2004 FLANGES AND THEIR JOINTS - DIMENSIONS OF GASKETS FOR PN-DESIGNATED FLANGES - PART 6: COVERED SERRATED METAL GASKETS FOR USE WITH STEEL FLANGES
    DIN EN 1759-4:2003-12 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, CLASS DESIGNATED - PART 4: ALUMINIUM ALLOY FLANGES
    DIN EN 13136:2013-12 REFRIGERATING SYSTEMS AND HEAT PUMPS - PRESSURE RELIEF DEVICES AND THEIR ASSOCIATED PIPING - METHODS FOR CALCULATION
    DIN EN 14267 E : 2004 IRRIGATION TECHNIQUES - IRRIGATION HYDRANTS
    DIN EN 14382 E : 2009 SAFETY DEVICES FOR GAS PRESSURE REGULATING STATIONS AND INSTALLATIONS - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURES UP TO 100 BAR
    BS EN 14525:2004 Ductile iron wide tolerance couplings and flange adaptors for use with pipes of different materials: ductile iron, grey iron, steel, PVC-U, PE, fibre-cement
    UNE-EN 378-2:2017 Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction, testing, marking and documentation
    BS EN 12560-6:2003 Flanges and their joints. Gaskets for class-designated flanges Covered serrated metal gaskets for use with steel flanges
    BS EN 13828:2003 Building valves. Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings. Tests and requirements
    BS EN 12308:1998 Installations and equipment for LNG. Suitability testing of gaskets designed for flanged joints used on LNG piping
    BS EN 14420-5:2013 Hose fittings with clamp units Threaded connections
    BS EN 12288:2010 Industrial valves. Copper alloy gate valves
    BS EN 877 : 1999 CAST IRON PIPES AND FITTINGS, THEIR JOINTS AND ACCESSORIES FOR THE EVACUATION OF WATER FROM BUILDINGS - REQUIREMENTS, TEST METHODS AND QUALITY ASSURANCE
    BS EN 14267:2004 Irrigation techniques. Irrigation hydrants
    BS EN 13348:2016 Copper and copper alloys. Seamless, round copper tubes for medical gases or vacuum
    UNE-EN 331:2016 Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
    BS EN 13136 : 2013 REFRIGERATING SYSTEMS AND HEAT PUMPS - PRESSURE RELIEF DEVICES AND THEIR ASSOCIATED PIPING - METHODS FOR CALCULATION
    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
    I.S. EN 14276-1:2006 PRESSURE EQUIPMENT FOR REFRIGERATING SYSTEMS AND HEAT PUMPS - PART 1: VESSELS - GENERAL REQUIREMENTS
    BS EN 13648-1:2008 Cryogenic vessels. Safety devices for protection against excessive pressure Safety valves for cryogenic service
    BS EN 14628:2005 Ductile iron pipes, fittings and accessories. External polythene coating for pipes. Requirements and test methods
    BS EN 13275:2000 Cryogenic vessels. Pumps for cryogenic service
    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
    BS EN ISO 10807:1997 Pipework. Corrugated flexible metallic hose assemblies for the protection of electrical cables in explosive atmosphere
    BS EN 14420-3:2013 Hose fittings with clamp units Clamp units, bolted or pinned
    BS EN 14420-7:2013 Hose fittings with clamp units Cam locking couplings
    BS EN 12560-4:2001 Flanges and their joints. Gaskets for Class-designated flanges Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges
    I.S. EN 12288:2010 INDUSTRIAL VALVES - COPPER ALLOY GATE VALVES
    DIN EN 736-3:2008-04 Valves - Terminology - Part 3: Definition of terms
    I.S. EN 877:2000 CAST IRON PIPES AND FITTINGS, THEIR JOINTS AND ACCESSORIES FOR THE EVACUATION OF WATER FROM BUILDINGS - REQUIREMENTS, TEST METHODS AND QUALITY ASSURANCE
    I.S. EN 10242:1995 THREADED PIPE FITTING IN MALLEABLE CAST IRON
    DIN EN 13828:2003-12 BUILDING VALVES - MANUALLY OPERATED COPPER ALLOY AND STAINLESS STEEL BALL VALVES FOR POTABLE WATER SUPPLY IN BUILDINGS - TESTS AND REQUIREMENTS
    DIN EN 14154-2:2011-06 WATER METERS - PART 2: INSTALLATION AND CONDITIONS OF USE
    EN 12288:2010 Industrial valves - Copper alloy gate valves
    EN 10253-4:2008/AC:2009 BUTT-WELDING PIPE FITTINGS - PART 4: WROUGHT AUSTENITIC AND AUSTENITIC-FERRITIC (DUPLEX) STAINLESS STEELS WITH SPECIFIC INSPECTION REQUIREMENTS
    EN 1267:2012 Industrial valves - Test of flow resistance using water as test fluid
    EN 10242:1994/A2:2003 THREADED PIPE FITTING IN MALLEABLE CAST IRON
    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 1057:2006+A1:2010 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications
    EN 12560-4:2001 Flanges and their joints - Gaskets for Class-designated flantes - Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges
    EN 12560-3:2001 Flanges and their joints - Gaskets for Class-designated flanges - Part 3: Non-metallic PTFE envelope gaskets
    EN 13547:2013 Industrial valves - Copper alloy ball valves
    EN 10311:2005 Joints for the connection of steel tubes and fittings for the conveyance of water and other aqueous liquids
    EN 10253-1:1999 Butt-welding pipe fittings - Part 1: Wrought carbon steel for general use and without specific inspection requirements
    EN 10253-3:2008 Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
    UNI EN 877 : 2007 CAST IRON PIPES AND FITTINGS, THEIR JOINTS AND ACCESSORIES FOR THE EVACUATION OF WATER FROM BUILDINGS - REQUIREMENTS, TEST METHODS AND QUALITY ASSURANCE
    EN 1092-2:1997 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges
    EN 12434:2000/AC:2001 CRYOGENIC VESSELS - CRYOGENIC FLEXIBLE HOSES
    EN 12178:2016 Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements, testing and marking
    EN 12735-2:2016 Copper and copper alloys - Seamless, round tubes for air conditioning and refrigeration - Part 2: Tubes for equipment
    I.S. EN 12284:2003 REFRIGERATING SYSTEMS AND HEAT PUMPS - VALVES - REQUIREMENTS, TESTING AND MARKING
    EN 877:1999/A1:2006/AC:2008 CAST IRON PIPES AND FITTINGS, THEIR JOINTS AND ACCESSORIES FOR THE EVACUATION OF WATER FROM BUILDINGS - REQUIREMENTS, TEST METHODS AND QUALITY ASSURANCE
    EN 13348:2016 Copper and copper alloys - Seamless, round copper tubes for medical gases or vacuum
    EN 12560-2:2013 Flanges and their joints - Dimensions of gaskets for Class-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges
    CEN/TS 13547:2006 Industrial valves - Copper alloy ball valves
    DIN 1988-300:2012-05 Codes of practice for drinking water installations - Part 300: Pipe sizing; DVGW code of practice
    DIN EN 10253-2:2008-09 Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements
    14/30294473 DC : 0 BS EN 488 - DISTRICT HEATING PIPES - PREINSULATED BONDED PIPE SYSTEMS FOR DIRECTLY BURIED HOT WATER NETWORKS - STEEL VALVE ASSEMBLY FOR STEEL SERVICE PIPES, POLYURETHANE THERMAL INSULATION AND OUTER CASING OF POLYETHYLENE
    PREN 14382 : DRAFT 2016 GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURE UP TO 100 BAR
    07/30158960 DC : 0 BS EN 13648-1 - CRYOGENIC VESSELS - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES FOR CRYOGENIC SERVICE
    DIN EN 1474-2:2009-02 Installation and equipment for liquefied natural gas - Design and testing of marine transfer systems - Part 2: Design and testing of transfer hoses
    CEI EN 60534-3-2 : 2002 INDUSTRIAL-PROCESS CONTROL VALVES - PART 3-2: DIMENSIONS - FACE-TO-FACE DIMENSIONS FOR ROTARY CONTROL VALVES EXCEPT BUTTERFLY VALVES
    09/30197349 DC : 0 BS ISO 4126-5 - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 5: CONTROLLED SAFETY PRESSURE-RELIEF SYSTEMS (CSPRS)
    I.S. EN 334:2005 GAS PRESSURE REGULATORS FOR INLET PRESSURES UP TO 100 BAR
    PREN ISO 4126-1 : DRAFT 2009 SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES
    10/30216654 DC : 0 BS EN 12842 - DUCTILE IRON FITTINGS FOR PVC-U OR PE PIPING SYSTEMS - REQUIREMENTS AND TEST METHODS
    02/710678 DC : DRAFT SEP 2002 PREN 1514-8 - FLANGES AND THEIR JOINTS - DIMENSIONS OF GASKETS FOR PN-DESIGNATED FLANGES - PART 8: POLYMERIC O-RING GASKETS FOR GROOVED FLANGES
    16/30334287 DC : 0 BS EN 334 - GAS PRESSURE REGULATORS FOR INLET PRESSURE UP TO 100 BAR
    01/122757 DC : DRAFT JULY 2001 ISO/DIS 16138 - INDUSTRIAL VALVES - DIAPHRAGM VALVES OF THERMOPLASTIC MATERIALS
    UNI EN 334 : 2009 GAS PRESSURE REGULATORS FOR INLET PRESSURES UP TO 100 BAR
    04/30117386 DC : DRAFT JUL 2004 EN 334 - GAS PRESSURE REGULATORS FOR INLET PRESSURES UP TO 100 BAR
    ISO 4126-2:2003 Safety devices for protection against excessive pressure Part 2: Bursting disc safety devices
    I.S. EN 16617:2015 PIPEWORK - CORRUGATED METAL HOSE ASSEMBLIES FOR COMBUSTIBLE GAS - PERFORMANCE REQUIREMENTS, TESTING AND MARKING
    I.S. EN 14423:2013 CLAMP TYPE COUPLING ASSEMBLIES FOR USE WITH STEAM HOSES RATED FOR PRESSURES UP TO 18 BAR
    EN 10253-2:2007 Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements
    I.S. EN 13136:2013 REFRIGERATING SYSTEMS AND HEAT PUMPS - PRESSURE RELIEF DEVICES AND THEIR ASSOCIATED PIPING - METHODS FOR CALCULATION
    EN ISO 4126-2:2003/AC:2006 SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 2: BURSTING DISC SAFETY DEVICES
    I.S. EN 10253-2:2007 BUTT-WELDING PIPE FITTINGS - PART 2: NON ALLOY AND FERRITIC ALLOY STEELS WITH SPECIFIC INSPECTION REQUIREMENTS
    DIN EN 877:2010-01 Cast iron pipes and fittings, their joints and accessories for the evacuation of water from buildings - Requirements, test methods and quality assurance (includes Amendment A1:2006 and Corrigendum AC:2008)
    DIN EN 12288:2010-10 Industrial valves - Copper alloy gate valves
    DIN EN 12284:2004-01 Refrigerating systems and heat pumps - Valves - Requirements, testing and marking
    DIN EN 1626:2009-01 CRYOGENIC VESSELS - VALVES FOR CRYOGENIC SERVICE
    DIN EN 12842:2012-11 Ductile iron fittings for PVC-U or PE piping systems - Requirements and test methods
    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
    DIN EN 598:2009-10 Ductile iron pipes, fittings, accessories and their joints for sewerage applications - Requirements and test methods (includes Amendment A1:2009)
    DIN EN 14268:2005-11 IRRIGATION TECHNIQUES - METERS FOR IRRIGATION WATER
    DIN EN 14422:2013-09 CLAMP TYPE COUPLING ASSEMBLIES FOR LIQUEFIED PETROLEUM GAS (LPG) TRANSFER HOSES
    DIN EN 1514-6:2004-03 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 6: Covered serrated metal gaskets for use with steel flanges; German version EN 1514-6:2003
    DIN EN 14267:2004-10 IRRIGATION TECHNIQUES - IRRIGATION HYDRANTS
    DIN EN 14384:2005-10 PILLAR FIRE HYDRANTS
    BS EN 10242:1995 Threaded pipe fittings in malleable cast iron
    BS EN 14154-2 : 2005 WATER METERS - PART 2: INSTALLATION AND CONDITIONS OF USE
    ISO 15761:2002 Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries
    BS EN 598 : 2007 DUCTILE IRON PIPES, FITTINGS, ACCESSORIES AND THEIR JOINTS FOR SEWERAGE APPLICATIONS - REQUIREMENTS AND TEST METHODS
    BS EN 334 : 2005 GAS PRESSURE REGULATORS FOR INLET PRESSURES UP TO 100 BAR
    UNE-EN 545:2011 Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test methods
    BS EN 13648-2:2002 Cryogenic vessels. Safety devices for protection against excessive pressure Bursting disc safety devices for cryogenic service
    BS EN 1514-8:2004 Flanges and their joints. Dimensions of gaskets for PN-designated flanges Polymeric O-Ring gaskets for grooved flanges
    BS EN 1514-7:2004 Flanges and their joints. Dimensions of gaskets for PN-designated flanges Covered metal jacketed gaskets for use with steel flanges
    I.S. EN 14420-5:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 5: THREADED CONNECTIONS
    I.S. EN 1267:2012 INDUSTRIAL VALVES - TEST OF FLOW RESISTANCE USING WATER AS TEST FLUID
    I.S. EN 13648-1:2008 CRYOGENIC VESSELS - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES FOR CRYOGENIC SERVICE
    I.S. EN 14420-6:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 6: TW TANK TRUCK COUPLINGS
    I.S. EN 14652:2006 WATER CONDITIONING EQUIPMENT INSIDE BUILDINGS - MEMBRANE SEPARATION DEVICES - REQUIREMENTS FOR PERFORMANCE, SAFETY AND TESTING
    I.S. EN 598:2007 DUCTILE IRON PIPES, FITTINGS, ACCESSORIES AND THEIR JOINTS FOR SEWERAGE APPLICATIONS - REQUIREMENTS AND TEST METHODS
    I.S. EN 1092-3:2003 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, PN DESIGNATED - PART 3: COPPER ALLOY FLANGES
    I.S. EN 12842:2012 DUCTILE IRON FITTINGS FOR PVC-U OR PE PIPING SYSTEMS - REQUIREMENTS AND TEST METHODS
    I.S. EN 969:2009 DUCTILE IRON PIPES, FITTINGS, ACCESSORIES AND THEIR JOINTS FOR GAS PIPELINES - REQUIREMENTS AND TEST METHODS
    DIN EN 14420-1:2013-09 Hose fittings with clamp units - Part 1: Requirements, types of fixing and connection, designation and testing
    I.S. EN 14420-8:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 8: SYMMETRICAL HALF COUPLING (GUILLEMIN SYSTEM)
    DIN EN 14420-8:2016-06 HOSE FITTINGS WITH CLAMP UNITS - PART 8: SYMMETRICAL HALF COUPLING (GUILLEMIN SYSTEM)
    I.S. EN 1514-2:2014 FLANGES AND THEIR JOINTS - GASKETS FOR PN-DESIGNATED FLANGES - PART 2: SPIRAL WOUND GASKETS FOR USE WITH STEEL FLANGES
    DIN EN 14420-3:2013-09 HOSE FITTINGS WITH CLAMP UNITS - PART 3: CLAMP UNITS, BOLTED OR PINNED
    I.S. EN 12560-2:2013 FLANGES AND THEIR JOINTS - DIMENSIONS OF GASKETS FOR CLASS-DESIGNATED FLANGES - PART 2: SPIRAL WOUND GASKETS FOR USE WITH STEEL FLANGES
    I.S. EN 736-3:2008 VALVES - TERMINOLOGY - PART 3: DEFINITION OF TERMS
    DIN EN 1057:2010-06 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications (includes Amendment A1:2010)
    I.S. EN 14628:2005 DUCTILE IRON PIPES, FITTINGS AND ACCESSORIES - EXTERNAL POLYETHYLENE COATING FOR PIPES - REQUIREMENTS AND TEST METHODS
    I.S. EN 331:2015 MANUALLY OPERATED BALL VALVES AND CLOSED BOTTOM TAPER PLUG VALVES FOR GAS INSTALLATIONS FOR BUILDINGS
    I.S. EN 14420-2:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 2: HOSE SIDE PARTS OF HOSE TAIL
    DIN EN 14420-5:2013-09 HOSE FITTINGS WITH CLAMP UNITS - PART 5: THREADED CONNECTIONS
    DIN EN 14420-7:2013-09 Hose fittings with clamp units - Part 7: Cam locking couplings
    I.S. EN 14422:2013 CLAMP TYPE COUPLING ASSEMBLIES FOR LIQUEFIED PETROLEUM GAS (LPG) TRANSFER HOSES
    EN 1514-2:2014 Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges
    I.S. EN 12178:2016 REFRIGERATING SYSTEMS AND HEAT PUMPS - LIQUID LEVEL INDICATING DEVICES - REQUIREMENTS, TESTING AND MARKING
    I.S. EN 12434:2000 CRYOGENIC VESSELS - CRYOGENIC FLEXIBLE HOSES
    I.S. EN 13348:2016 COPPER AND COPPER ALLOYS - SEAMLESS, ROUND COPPER TUBES FOR MEDICAL GASES OR VACUUM
    I.S. EN 545:2010 DUCTILE IRON PIPES, FITTINGS, ACCESSORIES AND THEIR JOINTS FOR WATER PIPELINES - REQUIREMENTS AND TEST METHODS
    DIN EN 14420-6:2013-09 Hose fittings with clamp units - Part 6: TW tank truck couplings
    I.S. EN 14420-3:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 3: CLAMP UNITS, BOLTED OR PINNED
    DIN EN 14420-2:2013-09 Hose fittings with clamp units - Part 2: Hose side parts of hose tail
    DIN EN 14420-4:2013-09 Hose fittings with clamp units - Part 4: Flange connections
    I.S. EN 14420-4:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 4: FLANGE CONNECTIONS
    I.S. EN 14420-7:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 7: CAM LOCKING COUPLINGS
    I.S. EN 1092-2:1997 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES, FITTINGS AND ACCESSORIES, PN DESIGNATED - PART 2: CAST IRON FLANGES
    I.S. EN 12735-2:2016 COPPER AND COPPER ALLOYS - SEAMLESS, ROUND TUBES FOR AIR CONDITIONING AND REFRIGERATION - PART 2: TUBES FOR EQUIPMENT
    I.S. EN 14420-1:2013 HOSE FITTINGS WITH CLAMP UNITS - PART 1: REQUIREMENTS, TYPES OF FIXING AND CONNECTION, DESIGNATION AND TESTING
    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
    PREN 12842 : DRAFT 2010 DUCTILE IRON FITTINGS FOR PVC-U OR PE PIPING SYSTEMS - REQUIREMENTS AND TEST METHODS
    12/30247799 DC : DRAFT JAN 2012 BS EN 12560-2 - FLANGES AND THEIR JOINTS - DIMENSIONS OF GASKETS FOR CLASS DESIGNATED FLANGES - PART 2: SPIRAL WOUND GASKETS FOR USE WITH STEEL FLANGES
    BS EN 10253-3:2008 Butt-welding pipe fittings Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
    08/30181473 DC : DRAFT JULY 2008 BS EN 545 - DUCTILE IRON PIPES, FITTINGS, ACCESSORIES AND THEIR JOINTS FOR WATER PIPELINES - REQUIREMENTS AND TEST METHODS
    09/30197346 DC : 0 BS ISO 4126-4 - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 4: PILOT-OPERATED SAFETY VALVES
    UNI EN 13136 : 2014 REFRIGERATING SYSTEMS AND HEAT PUMPS - PRESSURE RELIEF DEVICES AND THEIR ASSOCIATED PIPING - METHODS FOR CALCULATION
    I.S. EN 1474-2:2008 INSTALLATION AND EQUIPMENT FOR LIQUEFIED NATURAL GAS - DESIGN AND TESTING OF MARINE TRANSFER SYSTEMS - PART 2: DESIGN AND TESTING OF TRANSFER HOSES
    02/710115 DC : DRAFT AUG 2002 PREN 14525 - DUCTILE IRON WIDE TOLERANCE COUPLINGS AND FLANGE ADAPTORS FOR USE WITH PIPES OF DIFFERENT MATERIALS: DUCTILE IRON, GREY IRON, STEEL, PVC-U PE, FIBRE-CEMENT
    17/30351224 DC : 0 BS EN 14276-1 - PRESSURE EQUIPMENT FOR REFRIGERATING SYSTEMS AND HEAT PUMPS - PART 1: VESSELS - GENERAL REQUIREMENTS
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    09/30197343 DC : 0 BS ISO 4126-1 - SAFETY DEVICES FOR PROTECTION AGAINST EXCESSIVE PRESSURE - PART 1: SAFETY VALVES
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    01/122755 DC : DRAFT JULY 2001 ISO/DIS 21787 - INDUSTRIAL VALVES - GLOBE VALVES OF THERMOPLASTIC MATERIALS
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    I.S. CEN TS 13547:2006 INDUSTRIAL VALVES - COPPER ALLOY BALL VALVES
    I.S. EN 1057:2006 COPPER AND COPPER ALLOYS - SEAMLESS, ROUND COPPER TUBES FOR WATER AND GAS IN SANITARY AND HEATING APPLICATIONS
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    BS EN 1626:2008 Cryogenic vessels. Valves for cryogenic service
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    I.S. EN 12569:2000 INDUSTRIAL VALVES - VALVES FOR CHEMICAL AND PETROCHEMICAL PROCESS INDUSTRY - REQUIREMENTS AND TESTS
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    UNI EN 14276-1 : 2011 PRESSURE EQUIPMENT FOR REFRIGERATING SYSTEMS AND HEAT PUMPS - PART 1: VESSELS - GENERAL REQUIREMENTS
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    UNI EN 1057 : 2010 COPPER AND COPPER ALLOYS - SEAMLESS, ROUND COPPER TUBES FOR WATER AND GAS IN SANITARY AND HEATING APPLICATIONS
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    UNI EN 14420-2 : 2013 HOSE FITTINGS WITH CLAMP UNITS - PART 2: HOSE SIDE PARTS OF HOSE TAIL
    UNI EN 14268 : 2006 IRRIGATION TECHNIQUES - METERS FOR IRRIGATION WATER
    UNI EN 12288 : 2010 INDUSTRIAL VALVES - COPPER ALLOY GATE VALVES
    UNI EN 1267 : 2012 INDUSTRIAL VALVES - TEST OF FLOW RESISTANCE USING WATER AS TEST FLUID
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    UNI EN 1626 : 2009 CRYOGENIC VESSELS - VALVES FOR CRYOGENIC SERVICE
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    UNI EN 736-3 : 2008 VALVES - TERMINOLOGY - PART 3: DEFINITION OF TERMS
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    UNI EN 545 : 2010 DUCTILE IRON PIPES, FITTINGS, ACCESSORIES AND THEIR JOINTS FOR WATER PIPELINES - REQUIREMENTS AND TEST METHODS
    UNI EN 14384 : 2006 PILLAR FIRE HYDRANTS
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    UNI EN 14420-3 : 2013 HOSE FITTINGS WITH CLAMP UNITS - PART 3: CLAMP UNITS, BOLTED OR PINNED
    UNI EN 14420-5 : 2013 HOSE FITTINGS WITH CLAMP UNITS - PART 5: THREADED CONNECTIONS
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    UNI EN 14420-1 : 2013 HOSE FITTINGS WITH CLAMP UNITS - PART 1: REQUIREMENTS, TYPES OF FIXING AND CONNECTION, DESIGNATION AND TESTING
    UNI EN 10242 : 2009 Threaded pipe fittings in malleable cast iron
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    04/30118524 DC : DRAFT AUG 2004 EN 1057 - COPPER AND COPPER ALLOYS - SEAMLESS, ROUND COPPER TUBES FOR WATER AND GAS IN SANITARY AND HEATING APPLICATIONS
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    I.S. EN 12308:1999 INSTALLATIONS AND EQUIPMENT FOR LNG - SUITABILITY TESTING OF GASKETS DESIGNED FOR FLANGED JOINTS USED ON LNG PIPING
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    PREN 14420-7 : DRAFT 2010 HOSE FITTINGS WITH CLAMP UNITS - PART 7: CAM LOCKING COUPLINGS
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    02/709241 DC : DRAFT JULY 2002 PREN ISO 10497 - TESTING OF VALVES - FIRE TYPE-TESTING REQUIREMENTS
    10/30234634 DC : 0 BS EN 14423 - CLAMP TYPE COUPLING ASSEMBLIES FOR USE WITH STEAM HOSES RATED FOR PRESSURES UP TO 18 BAR
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    16/30334290 DC : 0 BS EN 14382 - GAS SAFETY SHUT-OFF DEVICES FOR INLET PRESSURE UP TO 100 BAR
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    UNE-EN 14423:2014 Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar
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    I.S. EN 1092-1:2007 FLANGES AND THEIR JOINTS - CIRCULAR FLANGES FOR PIPES, VALVES,FITTINGS AND ACCESSORIES, PN DESIGNATED - PART 1: STEEL FLANGES
    DIN EN 10242:1995-03 THREADED PIPE FITTING IN MALLEABLE CAST IRON
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    DIN EN 14652 E : 2007 WATER CONDITIONING EQUIPMENT INSIDE BUILDINGS - MEMBRANE SEPARATION DEVICES - REQUIREMENTS FOR PERFORMANCE, SAFETY AND TESTING
    DIN EN 10241:2000-08 STEEL THREADED PIPE FITTINGS
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    BS EN 12178:2003 Refrigerating systems and heat pumps. Liquid level indicating devices. Requirements, testing and marking
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    BS EN 1759-3:2003 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, class designated Copper alloy flanges
    BS EN 10253-1:1999 Butt-welding pipe fittings Wrought carbon steel for general use and without specific inspection requirements
    BS EN 14268:2005 Irrigation techniques. Meters for irrigation water
    BS EN 215:2004 Thermostatic radiator valves. Requirements and test methods
    BS EN 1514-2:2014 Flanges and their joints. Gaskets for PN-designated flanges Spiral wound gaskets for use with steel flanges
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    BS EN 12569:1999 Industrial valves. Valves for chemical and petrochemical process industry. Requirements and tests
    BS EN ISO 15761:2002 Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries
    I.S. EN 12735-1:2016 COPPER AND COPPER ALLOYS - SEAMLESS, ROUND TUBES FOR AIR CONDITIONING AND REFRIGERATION - PART 1: TUBES FOR PIPING SYSTEMS
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