Abstract: Rotary jet nozzle assembly (1) for pressure cleaning devices, comprising: a housing (2) extended along a first longitudinal axis (X) between an inlet (3) and an outlet (4) of a washing liquid, defining therein a containment chamber (5) of the washing liquid in fluid communication with the inlet (3); a support (10) rotatable within said containment chamber (5) and about the first longitudinal axis (X) due to the effect of the washing liquid coming from the inlet (3); a nozzle body (20) extended along a second longitudinal axis (Y) inclined with respect to the first longitudinal axis (X) and traversed by a delivery duct (28), the nozzle body (20) being associated with the support (10) and driven in rotation thereby; and a counterweight, integral with the support (10) and arranged in a position that is eccentric and opposite the nozzle body (20) with respect to the first longitudinal axis (X).

Abstract: A by-pass and pressure regulator valve exhibiting: an inlet mouth and an outlet mouth set in reciprocal communication by a main conduit; a by-pass mouth. The by-pass and pressure regulator valve comprises: an obturator, mobile between at least a closed position, in which it interrupts fluid communication between the main conduit and the by-pass mouth, and at least an open position, in which the fluid communication is not interrupted; operating pressure control means, predisposed to move the obturator from the closed position; means for determining a flow pressure loss in fluids crossing the main conduit, arranged along the main conduit in order to separate a first tract upstream of the main conduit from a second tract downstream thereof; obturator command means governed by a fluid pressure difference between the first tract and the second tract of the main conduit, distinct from the operating pressure control means but operatively connected to the obturator.

Abstract: A by-pass and pressure regulator valve exhibiting: an inlet mouth and an outlet mouth set in reciprocal communication by a main conduit; a by-pass mouth. The by-pass and pressure regulator valve comprises: an obturator, mobile between at least a closed position, in which it interrupts fluid communication between the main conduit and the by-pass mouth, and at least an open position, in which the fluid communication is not interrupted; operating pressure control means, predisposed to move the obturator from the closed position; means for determining a flow pressure loss in fluids crossing the main conduit, arranged along the main conduit in order to separate a first tract upstream of the main conduit from a second tract downstream thereof; obturator command means governed by a fluid pressure difference between the first tract and the second tract of the main conduit, distinct from the operating pressure control means but operatively connected to the obturator.

Abstract: A valve body has three openings: an inlet, an outlet and a flow-back opening, and is provided with an obturator of the flow-back opening and an obturator of the outlet, which outlet obturator is connected by means of a stem with a piston housed in a cylinder communicating with the outlet through a conduit. A recycling conduit places the outlet in communication with a recycling chamber communicating with the flow-back opening through a recycling opening closed by a third obturator, the recycling opening being freed by action of a rod solid to and intervening in conjunction with the second obturator.