Abstract: A modular wall system is described that includes a plurality of wall panels, a horizontal main bracket having a length; and a plurality of wall panel brackets. Each wall panel bracket is configured for attachment to a corresponding one of the wall panels. Each wall panel bracket is configured to engage the horizontal main bracket so as to hang the corresponding the wall panel while allowing movement of the wall panels in substantially horizontal directions.

Abstract: A modular wall system is described that includes a plurality of wall panels, a horizontal main bracket having a length; and a plurality of wall panel brackets. Each wall panel bracket is configured for attachment to a corresponding one of the wall panels. Each wall panel bracket is configured to engage the horizontal main bracket so as to hang the corresponding the wall panel while allowing movement of the wall panels in substantially horizontal directions.

Abstract: A multiple-nozzle head to be exchangeably mounted to jet tubes, in particular of spray cleaning apparatus, comprises a cavity into which issues at the rear a feed aperture opposite to which are mounted on the front end side of the cavity several discharge apertures connected to several preferably different nozzles, at least one freely moving valve sealing element being located in said cavity and by gravity can be moved in front of one of the discharge apertures, each discharge aperture receiving one valve seat, one support ring holding the valve seat, and connected thereto in the direction of flow one jet-aligner which in cross-section is preferably cross-shaped and which joins the nozzle.