摘要：

A valve made as a hybrid valve partially from standard shapes of exotic metals which will withstand corrosive chemicals and partially from castings, or as a casting from a corrosion-resistant material, and which includes an elliptical valve hole that forms a valve seat that is contained in a plate that is inclined to the flow of fluid through the valve. The valve further includes a solid tapered or conical plug that closes off flow by entering the elliptical hole, and seating therein, along an axis perpendicular to the axis of fluid flow through the valve.

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