This European Standard specifies dimensions, materials and performance requirements (including methods of test) for hydraulic safety groups, ofnominal size. working pressures'' Hydraulic safety groups are intended aving a maximum distributiontemperature of 95 0C, for all energy sources. Hydraulic safety groups control and limitThe pressure in hot water heaters and prevent, by one function,The backflow of warmwater intoThe circuit, andThe contamination of water inThe waterheaters byThe discharged water.Hydraulic safety groups do not controlThe temperature but alone may ascertainThe hydraulic safetyof water heaters ifThe mechanical resistance of the water heater remains at least equal toThe ratingpressure.
EN 1487:2000 history
2014EN 1487:2014 Building valves - Hydraulic safety groups - Tests and requirements
2000EN 1487:2000 Building Valves - Hydraulic Safety Groups - Tests and Requirements