| 摘要 |
A three-way valve for the passage of liquids has an inlet, an outlet and a drain. An inlet opening connects the inlet to the outlet, whereas a drain opening connects the outlet to the drain. The inlet and drain openings can be alternatively closed by two shutters, rigidly connected to a mobile shaft. The mobile shaft has a normal flow position, in which the drain opening is closed by the drain shutter, while the inlet opening is free and allows communication between the inlet and the outlet, or a drain position, in which the inlet opening is closed by the inlet shutter and the drain opening is free and allows communication between the outlet and the drain. The drain forms a single piece with the valve and the shaft has an extension, that slides in a bore guiding the shaft's movement and keeping it centered in the right position.
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