Abstract: In a device for controlling a volumetric rate of flow in a guide tube (1), in particular for controlling the volumetric flow of air in a ventilation system or an air-conditioning plant, an adjusting flap (5) is to be arranged variably, in particular rotatably about an axis of rotation (6), in the guide tube (1). In this case, the guide tube (1) is assigned an adjusting device (3) for the adjusting flap (5) and the adjusting device is assigned a controller (4) which can be controlled by a control unit, in particular a room thermostat.

Abstract: In a nozzle for an air conditioning installation or the like for ventilating rooms, having a mounting frame with an opening and a nozzle pivotably mounted therein and which has an extension part with a contour substantially closing the opening, the extension part is a widened extension region constructed in one piece with the nozzle, which leads to manufacturing advantages and wider possibilities of use.

Abstract: A device for measuring the volume flow of a gas in a duct for making it possible to effect adjustment or balancing at the manufacturer's location and then being installable in a duct at any desired location without leading to varied measurements by providing a plurality of evenly distributed polygonal collecting pipes with unilaterally arranged flow entrance ports connected with a compact unit. A flow baffle is arranged at the entrance point of the collecting pipes, and a nozzle is arranged downstream of the flow rectifier. The measuring probe is located downstream of the nozzle in the measuring unit.

Abstract: The invention relates to a slotted outlet for the delivery of air into an interior space, with a plate which can be inserted into the wall of the interior space (inside room) in order to close an air intake passage and which contains at least one outlet slot and at least one air guidance lamina which is arranged on the inside of the plate.

Abstract: An air distribution box for ventilating and air conditioning systems with a socket for the connection to the air duct system, with at least one outlet into the room which is to be ventilated and with a flap for adjusting the flowrate for the delivered or discharged air, in which the adjustable flap is disposed on the socket in the interior of the box and is adapted to adjustably close the socket aperture.