Abstract: In a sprinkler head comprising a sprinkler body (1) and a sprinkler base (4), the nozzle wall of the sprinkler base (4) is the fixed supporting plate (8) of a rubber-elastic nozzle plate (11) resting on it. The nozzle plate (11) comprises a plurality of elastic nozzle projections (12) formed on it which engage in receiving bore holes (9) of the supporting plate (8). The axial length of the elastic nozzle projections (12) in relation to that of the receiving bore holes (9) is such that their elastically deformable ends always project beyond the outer surface (14) of the supporting plate (8). Furring of the nozzle projections can easily be removed by exerting a slight external force on the elastically deformable ends. Nevertheless, the spray-forming outlet ends of the nozzle projections (12) are so thick-walled and of such material quality that they withstand ordinary water pressures and therefore have good spray guidance properties.

Abstract: A mixer valve with a ball-type valving member provided with a control member for being displaced in rotation around two different axes, and provided with openings cooperating with inlet openings for hot and cold water, having tubular gaskets of elastomeric material, and with outlet openings for mixed water, provided in a partially spherical seat of a fixed member, in order to regulate the mixing ratio between hot and cold water and the flow of delivered mixed water, wherein there are provided two inlet openings with tubular gaskets for an incoming flow (of cold or hot water), and one inlet opening with tubular gasket for the other incoming flow. These three inlet openings provided with tubular gaskets are at least approximately aligned along a circle within the partially spherical seat of the fixed member of the valve.

Abstract: The invention provides a regenerative heat exchanger rotor with an outer casing which comprises a plurality of layers of a helically wound strip orientated so that its width direction is radial with respect to the rotor, a core on which the strip is wound and which is permeable for the medium with which the rotor is to be used, said strip having channels therein to allow the radial passage of the current of the medium. A further strip on the rotor is free of channels and is also wound on the permeable core helically so as to be associated with the channeled strip so that the layers or turns of the unchanneled strip (20) alternate with those of the channeled one with each layer or turn of the channeled strip being followed by one layer or turn of the unchanneled one. This arrangement makes possible an extraordinarily satisfactory efficiency as regards flow and heat transfer. This advantage is combined with the advantage of the possibility of very simple and cost-effective production.