Safety and control devices for use in hot water systems. Specifications for temperature relief valves for pressures from 1 bar to 10 bar|Test equipment, Leak tests, Thermostatic valves, Water supply (buildings), Relief valves, Flow rates, Testing conditions, Performance, Diameter, Volume, Pipe connections, Test pressure, Pressure testing, Water valves, Valves, Flow measurement, Thermal testing, Endurance testing, Size, Adjustment, Storage water heaters, Area, Dimensions, Torsion testing, Marking, Hot-water supply systems, Safety devices