| 摘要 |
A mixing valve including a valve body (1), control means (25-27) a changeable cartridge (10) housing a fixed hard material plaque (18) and at least one movable hard material plaque (19) intended to cooperate with the fixed plaque under action of the control means (25-27) in order to regulate the flow rate and the mixing ratio of the valve, and with a hydraulic responsive member (50) acting as a piston, sealingly inserted with axial mobility in a corresponding bore of the valve body (1), between the valve bottom (1A) and a chamber for the cartridge (10). The hydraulic responsive member (50) has passages (51, 52) therethrough in communication with water inlets (7A, 8A) of the body (1) and also in communication with entrances in the cartridge (10); furthermore, the hydraulic responsive member (50) has surfaces which undergo the pressure of inlet (52), and a spring member (30) is interposed between the valve body (1A) and the hydraulic responsive member (50). This member thus charges the cartridge (10) with a force which, in any circumstance, is suitable for avoiding removal of the plaques (18, 19) the one from another or from their packings, and the positions of the inlets (7A, 8A) are made independent from the positions of the entrances of cartridge (10). |
