An assembly for inflation and discharge of inflation fluids for inflatable diving equipment, the assembly comprising:
- a two-way flow valve providing two flow paths comprising an inlet path and an exhaust path,
- wherein the valve includes a valve body having the inlet path and the exhaust path, which are separate from each other and are each disposed to receive flows having opposite directions,
- wherein the inlet path and the exhaust path are each provided with a non-return valve that prevents a flow in an opposite direction with respect to a flow direction foreseen for a respective flow path and that enables the flow to pass, automatically or on command, in the flow direction foreseen for the respective flow path,
- wherein each non-return valve has a valve seat defined in a predetermined position along the corresponding flow path, with the seat cooperating with a shutter, a combination of the shutter and the valve seat being configured to automatically close the flow of an inflation fluid having the opposite direction than that for which the corresponding flow path is intended,
- wherein one of the two flow paths is intended for passage of an inlet flow to a collection body comprising an inflatable bag or a rigid tank and has an end duct for coupling to a supply source of the inflation fluid having a predetermined supply overpressure,
- wherein the respective non-return valve automatically assumes a closing and opening position as a function of a pressure of the flow of the inflation fluid,
- wherein another one of the two flow paths is intended for the passage of a discharge or exit flow of the fluid from the collection body, the shutter of the non-return valve being stably and automatically urged against a corresponding valve seat, in a position of interdiction of the discharge or outlet flow, by an elastic element providing a predetermined force, the shutter being displaced to an open condition, which causes a spacing from the valve seat using manual, motorized or automatic command members of a displacement of the shutter according to a condition of overpressure of the fluid in the collection body when the overpressure generates a thrust force on the shutter greater than the thrust force exerted by the elastic element, and
- wherein the inflation and discharge unit has a rotationally symmetrical shape and the two flow paths are made coaxial to each other, the two flow paths comprising one central and radially innermost flow path ending on a side facing the collection body with a non-return valve with a diaphragm shutter which overlaps a face of a valve seat facing an inside of the collection body, on a side of the face facing the collection body, and an annular discharge flow path which has an annular passage opening and coaxially surrounds the central and radially innermost flow path, the two flow paths being separated by a tubular wall which externally delimits the central and radially innermost flow path and internally the annular discharge flow path.