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 for hydraulic groups of nominal sizes DN 15 to DN 40 and with working pressures from 0,1 MPa (1 bar) to 0,7 MPa (7 bar) for fitting to storage water heaters with a distribution temperature not exceeding 95 °C, for all energy sources. The hydraulic safety group controls and limits the fluid pressure in a hot water heater and prevents, by one function, the backflow of warm water into the circuit, and the contamination of water in the water heater by the discharged water. The hydraulic safety group does not control the temperature but may ascertain alone the hydraulic safety of the water heater if the mechanical resistance of the vessel remains at least equal to the rating pressure.
|Nederlandse titel||Kranen in gebouwen - Inlaatcombinatie - Eisen en beproevingen|
|Engelse titel||Building valves - Safety group - Characteristics and tests|
|Vervangen door||Normatieve verwijzingen||