EN 331:2015

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

Publication date:   Jan 18, 2016

General information

90.93 Standard confirmed   Dec 18, 2020


CEN/TC 236 Non industrial manually operated shut-off valves for gas and particular combinations valves-other products

European Norm

23.060.20   Ball and plug valves



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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 × 105 Pa, 0,5 × 105 Pa, 1 × 105Pa, 5 × 105 Pa and 20 × 105Pa and with temperature limits from -5 °C or −20 °C to + 60 °C.
NOTE "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.

Related legislation

Legislation related to this standard


Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec

Life cycle


EN 331:1998

EN 331:1998/A1:2010


EN 331:2015
90.93 Standard confirmed
Dec 18, 2020