Abstract: An apparatus for controlling and/or regulating process parameters of an installation such as a building automation installation has at least a first decision table and preferably a second decision table. The decision tables have rules with which a priority is associated. By evaluating the rules of the first decision table, on the basis of the state of a sub-system of the installation, a further state value is ascertained and fed to an input of the second decision table. The state of a further sub-system of the installation is altered by evaluation of rules of the second decision table. The decision tables can be represented for an installation operator in a picture screen window.

Abstract: A flow regulating valve combines two throttle locations in a valve housing. One throttle location is always so adjusted that a constant differential pressure prevails across the other throttle location. Therefore at that second throttle location the through flow depends only on the degree of opening and not on the differential pressure. A cone of the second throttle location comprises at least two individual portions which are displaceable relative to each other and by the spacing of which the effective cross-section of the throttle location is variable. That provides a through-flow limiting effect which is not in the form of a stroke movement limitation. Therefore the full adjusting range is available for adjusting the flow. This flow regulating valve is suitable for controlling flows of liquids in heating solutions.