Importance

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Abstract

A valve device for a fluid such as molten metals, which permits reliable, accurate and very easy control of the flow of molten metal as well as the direction in which the molten metal is to flow. The valve device includes a valve body (6) and a valve seat (8) for accepting the valve body (6). The valve body (6) and the valve seat (8) are adapted to engage each other under an applied pressure so that the two elements can slide relative to each other. Specifically, the valve body (6) has a slanted surface and the valve seat (8) has a slanted surface so that the valve body (6) and the valve seat (8) slidably engage each other through the respective slanted surfaces. The slanted surface on the valve seat (8) has a plurality of openings (15a, 15b, 15c) which communicate with a plurality of fluid passages (11, 12, 13) within and through the valve seat (8). Also, the slanted surface on the valve body (6) has two or more openings (14a, 14b) that communicate with a plurality of fluid passages (26) within and through the valve body. Any one of the openings (15a, 15b, 15c) on the slanted surface of the valve seat (8) may be aligned with any one of the openings (14a, 14b) for completing a given fluid passage within the valve device by allowing the valve body (6) and the valve seat (8) to slide relative to each other with the respective slanted surfaces engaging each other under the applied pressure.

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First Claim