UNE-EN 549:2020
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Rubber materials for seals and diaphragms for gas appliances and gas equipment
Hardcopy , PDF
Spanish, Castilian, English
22-07-2020
21-02-2024
This standard specifies requirements and associated test methods for rubber materials used in gas installations, gas equipment and gas appliances in contact with 1st, 2nd and 3rd family combustible gases as classified in EN 437 e.g. natural gas, LPG, bio methane bio LPG. It also establishes a classification based on temperature range and hardness. This standard is applicable to materials from which are manufactured homogeneous seals and homogeneous or reinforced diaphragms.Since the dimensions and shape of the components differ from those of standard test pieces taken from sheet material as used for type testing of the rubber materials according to this standard, tolerances have been made in the requirements specified by Annex A for the components with respect to those specified for standard test pieces.The range of operating temperatures covered by this standard is - 40 °C to + 150 °C.This standard is not applicable for silicone rubber used either above 200 hPa (200 mbar) nominal pressure or at temperatures below 0 °C with 3rd family gases, as there is the possibility of condensation.
| Committee |
CTN 53/SC 1
|
| DocumentType |
Standard
|
| Pages |
33
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Superseded
|
| Standards | Relationship |
| EN 549:2019 | Identical |
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