Over deze norm
This standard specifies: - materials, surface coatings and finishes of the product. - dimensions, hydraulic characteristics, tightness and mechanical properties, which shall be fulfilled by the expansion valves. - tests to determine that the characteristics and properties are met. - marking and presentation of a hydraulic expansion group of nominal sizes DN 15 to DN 40 and with working pressures from 0,1 MPa (1 bar) to 1,0 MPa (10 bar) for fitting to storage water heaters and heating circuits with a distribution temperature of 95 °C, for all energy sources. The expansion group controls and limits the increase in fluid pressure, due to the normal increase in volume when water is heated, contained in a hot water heater, prevents the backflow of warm water into the circuit and the contamination of water contained in the water heater with discharged water. The expansion group does not control the temperature and does not constitute alone the protection required for storage water heaters.
|Nederlandse titel||Kranen in gebouwen - Expansiecombinatie - Eisen en beproevingen|
|Engelse titel||Building valves - Expansion group - Characteristics and tests|
|Vervangen door||Normatieve verwijzingen||