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Norm
ÖNORM EN 1487
Issue date: 2000 07 01
Building valves - Hydraulic safety groups - Tests and requirements
This European Standard specifies, dimensions, materials and performance requirements (including methods of test) for hydraulic safety groups, of nominal sizes from DN 15 ...
Withdrawn: 2014 09 01
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 27 Pages
Language:
German
| English
| Download GER/ENG
Currently valid:
Optionally co-design standards:
ICS
This European Standard specifies, dimensions, materials and performance requirements (including methods of test) for hydraulic safety groups, of nominal sizes from DN 15 to DN 40, having working
pressures from 0,1 MPa (l bar) to 0,7 MPa (7 bar). Hydraulic safety groups are intended for fitting to the cold water supply of storage water heaters, having a maximum distribution temperature of
95C, for all energy sources. Hydraulic safety groups control and limit the pressure in hot water heaters and prevent, by one function, the backflow of warm water into the circuit, and the contamination of water in the water heaters by the discharged water.
Hydraulic safety groups do not control the temperature but alone may ascertain the hydraulic safety of water heaters if the mechanical resistance of the water heater remains at least equal to the rating
pressure. NOTE : The use of the device specified in this Standard does not override the need to use controls (eg thermostats and cut-outs) which act directly on the power sources of water heaters.
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Building valves - Hydraulic safety groups - Tests and requirements