Automatic Water Level Control ValveSave water, but leave the job to this automatic valve to avoid water wastage! This valve replaces the traditional floating ball valve and can be applied to various systems such as high water tanks, pools, industrial water towers and civil buildings. Automatic control, low self replenishment, automatic stop of effluent, beautiful appearance, small size, practical, simple installation, no electricity, easy to use, long life, low failure rate, save water