Revision of EN 331
Revision of EN 331:1998 "Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings"
CEN/TC 236 "Non industrial manually operated shut-off valves for gas and particular combinations valves-other products" has been revising the following standard in its WG 1. This new proposal for EN 331 was prepared, integrating the amendment published in 2010 into the original text of 1998.
The draft has been circulated to CEN/TC 236 and CENTC/69 members for comment.
Should you have any interest a copy of the document is available from BVAA.
Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
Manually operated ball valves and closed bottom taper plug valves in compliance with this standard are classified as belonging to Class A1 "No contribution to fire" when made of materials included in Commission Decision 96/603/EC (OJEU L267 of 19.10.1996)
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 0,2 105 Pa, 0,5 105 Pa and 5 105 Pa and 1 x 105Pa
Valve nominal sizes (DN) covered by this European standard are as follows: 6, 8, 10, 12, 15, 20, 25, 32, 40, 50.
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