Dema Solenoid Valves

solenoid valves
(Solenoid valve) 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.
(Solenoid Valve) 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.
(Solenoid Valve) An automatic valve operating under low voltage (24V AC) which may be remotely located in the landscape and controlled via a signal cable from the central controller (timer).

dema
Dive Equipment & Marketing Association. Not-for-profit organization of equipment manufacturers, training agencies, dive media, travel companies and dive retailers that seeks to promote scuba diving and snorkeling to the general public.
Demas, mentioned by the Apostle Paul in the New Testament of the Bible, appears to have been a man involved in the ministry as a companion of Paul.