Abstract: A compact unit has an electric motor accommodated in housing parts (7, 55) of a unit housing (45) and driving at least one hydraulic pump and giving off heat at the same time, an air heat-exchanging device, and a fan (19) drivable to produce an air flow. A flow-conducting device (47, 55) divides the air flow at least in a first partial flow flowing around the electric motor and a second partial flow flowing to the heat-exchanging device in the unit housing (45). Alternatively, arranged in series, the air flow first flows against the electric motor and then the heat-exchanging device, or that the incidence of the air flow occurs at least partially in the reverse direction.

Abstract: A valve modular system, comprising individual block components (1 to 4), each of which has a plurality of emerging connection points on at least one part of the free end faces thereof, for the purpose of holding connection components, such as insert valves (29, 35), pressure balances, nozzle or screen inserts (43), fluid lines, blind plugs (13, 15), pressure and temperature displays, hydraulic accumulators (9) and comparable fluid-influencing or fluid-evaluating or fluid-storing components, and which abut each other with the adjacent end faces (11) thereof in a longitudinal direction, in pairs, to form a longitudinal linkage and in this respect are connected at least partially to each other in a fluid-guiding manner, is characterised in that transversely to the longitudinal linkage at least one further block component (45, 49, 51, 59) is placed on at least one of the other block components (1 to 4) to form a vertical linkage in a fluid-guiding manner.

Abstract: The invention relates to a compact unit, at least consisting of an electric motor, which is accommodated in housing parts (7, 55) of a unit housing (45) and which drives at least one hydraulic pump and gives off heat at the same time, an air heat-exchanging device, and a fan (19), which can be driven in order t o produce an air flow. The compact unit is characerized in that a flow-conducting device (47, 55) that divides off from the air flow at least a first partial flow flowing around the electric motor and a second partial flow flowing to the heat-exchanging device is present in the unit housing (45), or that, arranged in series, the air flow first flows against the electric motor and then the heat-exchanging device, or that the incidence of the air flow occurs at least partially in the reverse direction.