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Norm
ÖNORM EN 1487
Issue date: 2014 09 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 ...
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Valid
Publisher:
Austrian Standards International
Format:
Digital | 34 Pages
Language:
German
| English
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 25, having working pressures from
0,1 MPa (1 bar) to 0,7 MPa (7 bar). Hydraulic safety groups are intended for fitting to the potable water supply
of storage water heaters, having a maximum storage temperature of 95°C.
Hydraulic safety groups limit the pressure in hot water heaters, prevent the backflow of water into the main
circuit and prevent the discharged water to get into contact with the water in the water heater.
Hydraulic safety groups do not control the temperature. They ascertain the hydraulic safety of water heaters if
the mechanical resistance of the water heater remains at least equal to the rating pressure.
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