Abstract: The water mixer tap comprises a body defining a dispenser chamber connected to a dispenser conduit. A movable shutter disc is provided in the mixing chamber, and is operable by means of an external lever and acts on two seats, respectively communicating to a hot water inlet conduit and to a cold water inlet conduit. The movable disc defines at least one seat control port which leads into the mixing chamber. The peculiarity of the invention resides in the fact that the control port defines useful flow sections for the water which are variable along planes substantially perpendicular to the plane of contact between the seats and said movable shutter disc.

Abstract: A valve assembly comprises a ceramic disk having peripheral recesses formed therein and being movable over a pair of ceramic tubular seats in communication with the cold water supply conduit and hot water supply conduit, respectively, and resiliently urged against the disk. The arrangement is such that with the disk and tubular seats at any mutual position, the disk overlies an arc of the periphery of the tubular seat orifices greater than half such periphery, with the recesses leaving free part or the entire orifice aperture.

Abstract: A system for pyrolysing/drying biological sludge by indirectly heating the same by means of hot fumes, characterized by the fact that it incorporates a rotary furnace secured angularly to a cover skirt and defining, with the same, a cavity in which to circulate the aforementioned heating fumes; the aforementioned skirt being supported in rotary manner on powered rollers and connection to the utility pipes and to the sludge loading/unloading means fixed to the floor being made by means of devices consisting of a first frame turning together with the furnace and the respective skirt and supporting, in idle manner by means of rolling bodies, and a second frame connected to the aforementioned pipes.

Abstract: The dispensing unit comprises a water dispensing element supported by a holder element adapted for wall mounting, between the water dispensing element and the holder element there being provided a dovetail connection system comprising a male element slidably engageable in a female member, the latter being defined by a shaped groove gradually narrowing in a parallel direction to its major dimension direction.