Flow control valve

An adjustable flow-control valve for controlling the flow from a fluid-supply unit, the flow-control valve comprising a pressure-control unit and a flow-control unit, a first inlet for connection to the fluid-supply unit, and an outlet, the pressure-control unit including a first chamber (I) and a second chamber (II) separated by a first movable element which is cooperatively connected to a first preloading device, wherein

• the first chamber (I) is in fluid communication with the first inlet and with the flow-control unit, wherein
• a first valve assembly including a first control element is arranged between said inlet and the first chamber (I),
• the first control element is cooperatively connected to the first movable element so that the first valve assembly is governed by the position of the first movable element so that fluid in the first chamber (I) has a predetermined overpressure in relation to the fluid pressure in the second chamber (II) when in use, and
• the second chamber (II) is in fluid communication with the outlet and includes a second inlet in fluid communication with the flow-control unit;
• and
• the flow-control unit includes a third chamber (III) and a fourth chamber (IV) separated by a second movable element which is cooperatively connected to a second preloading device, wherein
• the third chamber (III) is in fluid communication with the first chamber (I),
• the fourth chamber (IV) is in fluid communication with the first chamber (I) via a nozzle and with the second chamber (II) via a second valve assembly including a second control element, and the second control element is cooperatively connected to the second movable element so that the second valve assembly is governed by the position of the second movable element.