专家解读视频
Specifies requirements and associated test methods for vulcanized rubber materials used in gas appliance and equipment in contact with 1st, 2nd, and 3rd family combustible gases. Also establishes a classification based on temperature range and hardness. Applies to materials from which are manufactured homogeneous or reinforced diaphragms. Does not apply to seals and diaphragms for devices in gas transmission systems nor in equipment used in 1st and 2nd family gas distribution systems.
Supersedes NBN EN 279 and NBN EN 278. (11/2003) Supersedes NBN EN 291. (07/2006)
NF EN 549:1995 - Identical
NS EN 549 Ed. 1 (1995) - Identical
SS EN 549 Ed. 1 (1995) - Identical
UNE EN 549:1996 - Identical
ONORM EN 549:1995 - Identical
I.S. EN 549:1995 - Identical
UNI EN 549:1996 - Identical
SN EN 549:1995 - Identical
NEN EN 549:1995 - Identical
BS EN 549:1995 - Identical
DIN EN 549 (1995-04) - Identical
