Patent Number: 8,714,520

Title: Unidirectional ceramic control valve structure

Abstract: A unidirectional ceramic control valve includes a valve shell, a shaft, a ring unit, an upper ceramic piece, a lower ceramic piece, a valve base and at least one anti-leak ring. Lower section of the valve shell has two hook holes, and two notches are formed therebelow. A receiving trough is formed at an inner portion of lower section of the shaft to provide a space for the ring unit and the upper ceramic piece. The ring unit is a ring-shaped body with low friction coefficient, and when the ring unit is disposed between the shaft and upper ceramic piece, it prevents the shaft from directly contacting the upper ceramic piece to generate wear. The upper ceramic piece has two symmetric water holes, while the lower ceramic piece has two symmetric circulating holes. A first protruding unit and a second protruding unit are correspondingly formed at the valve base.

Inventors: Sun; Tung-Hsin (Taichung, TW)

Assignee: Grand Advanced Technologies Co. Ltd.

International Classification: F16K 3/08 (20060101); F16K 27/04 (20060101)

Expiration Date: 5/06/12018