1.1 This European Standard specifies the general
requirements for the construction, performance and
safety of ball valves and closed bottom taper plug
valves. It also details the test methods and marking
requirements.
It applies to metallic valves for domestic and commercial
not directly buried installations inside or outside of
buildings, using gases of the first, second and third
family (specified in EN 437) and working up to 0,2 × 10 Pa, 0,5 × 10Pa and 5 × 10 Pa.
1.2 Valve nominal sizes (DN) covered by this
European Standard are as follows:
6, 8, 10, 12, 15, 20, 25, 32, 40, 50.
BS EN 331:1998+A1:2010 Referenced Document
EN 10226 Pipes threads where pressure tight joint are made on the threads - Part 3: Verification by means of limit gauges*， 2005-02-01 Update
EN 1092-1 Flanges and their joints - Circular flanges for pipes@ valves@ fittings and accessories@ PN designated - Part 1: Steel flanges*， 2018-04-01 Update
EN 1092-2 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges*， 2023-11-29 Update
EN 1092-3 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories PN designated - Part 3: Copper alloy flanges*， 2003-09-01 Update
EN 1254-1 Copper and Copper Alloys - Plumbing Fittings - Part 1: Fittings with Ends for Capillary Soldering or Capillary Brazing to Copper Tubes
EN 1254-2 Copper and copper alloys - Plumbing fittings - Part 2: Compression fittings for use with copper tubes*， 2021-04-30 Update
EN 12627 Industrial valves - Butt welding ends for steel valves*， 2017-11-01 Update
EN 13501-1 Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests
EN 1503-1 Valves - Materials for Bodies, Bonnets and Covers - Part 1: Steels Specified in European Standards*， 2024-04-19 Update
EN 1503-3 Valves - Materials for Bodies, Bonnets and Covers - Part 3: Cast Irons Specified in European Standards Corrigendum; Ratified European Text*， 2001-03-01 Update
EN 1503-4 Valves - Materials for bodies, bonnets and covers - Part 4: Copper alloys specified in European Standards*， 2016-02-01 Update
EN 1555-3 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings*， 2021-07-07 Update
EN 1775:2007 Gas supply - Gas pipework for buildings - Maximum operating pressure less than or equal to 5 bar - Functional recommendations*， 2007-08-01 Update
EN 377 Lubricants for applications in appliances and associated controls using combustible gases except those designed for use in industrial processes
EN 437 Test gases - Test pressures - Appliance categories
EN 549 Rubber materials for seals and diaphragms for gas appliances and gas equipment*， 2023-05-03 Update
EN 60730-1:2000 Automatic electrical controls for household and similar use - Part 1: General requirements (Incorporates Amendments A11: 2002; A12: 2003; A13: 2004; A14: 2005; A15: 2007, A16: 2007, and A2: 2008; Incorporating Corrigenda August 2007 and March 2010; Remain*， 2024-04-19 Update
EN 682 Elastomeric seals - Materials requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluids*， 2002-02-01 Update
EN 751-1 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds
EN 751-2 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds
EN 751-3 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings*， 2023-12-13 Update
EN ISO 228-1 Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation ISO 228-1: 2000*， 2003-02-26 Update
EN ISO 6708 Pipework Components - Definition and Selection of DN (Nominal Size) (ISO 6708 : 1995)
EN ISO 9227 Corrosion tests in artificial atmospheres - Salt spray tests - Amendment 1: Footnote of warning (ISO 9227:2022/DAM 1:2023)
BS EN 331:1998+A1:2010 history
2015BS EN 331:2015 Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
1998BS EN 331:1998+A1:2010 Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
1998BS EN 331:1998 Manually operated ball valves and closed bottom taper plug valves for gas installations in buildings