Abstract: The invention relates to an autonomous device for spraying a medium to be sprayed, containing: a control tank; a valve that can switch from a closed position to an open position and vice versa, according to the filling level of the control tank; and a porous ceramic wall that can be in contact with the medium to be sprayed and separates the control tank from said medium to be sprayed, the ceramic being structured so as to drain a spray liquid between the medium to be sprayed and the control tank. The invention also relates to an autonomous device for controlling the spraying.

Abstract: A needle valve capable of adopting at least one closed position and one open position, a piston sensitive to the fluid flow and able to adopt at least one low-flow position and one high-flow position. The needle valve and the piston are arranged in such a way that as long as the piston is in the high flow position, the needle valve is prevented from occupying the closed position.

Abstract: The invention concerns an exclusively mechanical stand-alone device for controlled watering by sprinkling, wherein a soil simulating member, having an absorbent body associated with a reclinable cup arranged beneath, contributes to determination of the interval between two watering operations. A balance arm, bearing the absorbent body and an annular magnet, is mounted and balanced by a compressed spring, contributing to the determination of the opening and closing times of a valve. The valve includes a hydraulic relay with a nozzle triggering its opening or closure, in response to the displacement of the magnet field. An impermeable sleeve encloses the core and the nozzle. A sliding canopy enables one of the parameters determining the duration of the watering operation to be adjusted. A thermostatic element has an adjustable position preventing watering in sunshine. The device is mounted rotating on a pivot including the base of the sleeve and a tail unit.

Abstract: The invention concerns an exclusively mechanical stand-alone device for controlled watering by sprinkling, wherein a soil simulating member, having an absorbent body associated with a reclinable cup arranged beneath, contributes to determination of the interval between two watering operations. A balance arm, bearing the absorbent body and an annular magnet, is mounted and balanced by a compressed spring, contributing to the determination of the opening and closing times of a valve. The valve includes a hydraulic relay with a nozzle triggering its opening or closure, in response to the displacement of the magnet field. An impermeable sleeve encloses the core and the nozzle. A sliding canopy enables one of the parameters determining the duration of the watering operation to be adjusted. A thermostatic element has an adjustable position preventing watering in sunshine. The device is mounted rotating on a pivot including the base of the sleeve and a tail unit.