Valve that is actuated with a electromagnetic solenoid magnet. 2 possible variations, NC (naturally closed) which is closed when there is no current applied and NO (naturally open) which is open when no current is applied
A solenoid valve is an electromechanical valve for use with liquid or gas. The valve is controlled by an electric current through a solenoid coil.
A quick-opening valve which is mounted on a pressurized tank. The opening of the valve generates a cleaning pulse which dislodges the dust from the filter elements.
Impervious to water
make watertight; "Waterproof the coat"
Not liable to be washed away by water
any fabric impervious to water
rainproof: not permitting the passage of water
waterproof
found these "waterproof flower boots" at the market today. Old leather boots being givin new life with a fresh coat of paint with small plants inside it!!!