BS EN 331:2015 - Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings

BS EN 331:2015

Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings

Status : Current   Published : December 2015



1.1 This European Standard specifies the characteristics for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking provisions.

It applies to metallic valves not directly buried for domestic and commercial 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 5 Pa, 0,5 × 10 5 Pa, 1 × 10 5Pa, 5 × 10 5 Pa and 20 × 10 5Pa and with temperature limits from – 5 °C or −20 °C to + 60 °C.


“Not directly buried” within the context of this standard means that valves below ground are not in direct contact with earth or other materials e.g. that they are in a protected encasement.

1.2 Valve nominal sizes ( DN) covered by this European Standard are as follows: 6, 8, 10, 12, 15, 20, 25, 32, 40, 50, 65, 80, 100.

Standard NumberBS EN 331:2015
TitleManually operated ball valves and closed bottom taper plug valves for gas installations for buildings
Publication Date31 December 2015
Normative References(Required to achieve compliance to this standard)EN 377, EN 437:2003+A1:2009, EN 549, EN 682, EN 751-1, EN 751-2, EN 751-3, EN 1092-1, EN 1092-2, EN 1092-3, EN 1254-1, EN 1254-2, EN 1254-8, EN 1412, EN 1503-1, EN 1503-3, EN 1555-3, EN 1593:1999, EN 1982, EN 10226, EN 10255, EN 12163, EN 12164, EN 12165, EN 12167, EN 12168, EN 12420, EN 12627, EN 60730-1:2000, IEC 60730-1:1999, EN ISO 228-1, ISO 228-1, EN ISO 9227, ISO 9227, ISO 65, ISO 261, ISO 17885
Informative References(Provided for Information)EN 1005-3:2002+A1:2008, EN 1775:2007, EN ISO 6708:1995, ISO 6708:1995, EN ISO 9001, ISO 9001, Regulation (EU) No. 305/2011
ReplacesBS EN 331:1998+A1:2010
International RelationshipsEN 331:2015
Draft Superseded By13/30279702 DC
DescriptorsBall valves, Plug valves, Gas valves, Valves, Manually-operated devices, Gas supply, Domestic, Energy supply systems (buildings), Service pressure, Classification systems, Temperature, Environment (working), Size, Dimensions, Thickness, Joints, Seals, Marking, Performance, Ratings, Flow rates, Torque, Durability, Installation, Instructions for use, Leak tests, Flow measurement, Torsion testing, Bend testing, Endurance testing, Low-temperature testing, Thermal testing, Environmental testing, Damp-heat tests, Scratch tests, Packaging, Testing conditions, Test equipment, Copper alloys, Cast-iron, Steels
Title in FrenchRobinets à tournant sphérique et robinets à tournant conique à fond plat destinés à être manoeuvrés manuellement et à être utilisés pour les installations de gaz dans les bâtiments
Title in GermanHandbetätigte Kugelhähne und Kegelhähne mit geschlossenem Boden für die Gas-Hausinstallation
ISBN978 0 580 82225 4
File Size1.216 MB

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