| 摘要 |
A water saving proximal valve in a water supply and drainage system is provided to prevent waste of water, and to improve convenience by automatically cutting off water in getting a hand or tableware out of the range of the proximal valve. A water saving proximal valve of a water supply and drainage system saves water by automatically shutting off water supply when a hand of a user or tableware goes out of the specific range of the water saving proximal valve. Water consumption is decreased in the water supply and drainage system. The water saving proximal valve is used conveniently by automatically and promptly cutting off water in moving the hand or tableware out of the specific range of the water saving proximal valve without using a manual valve. |
