MWG 220 Volt normally closed solenoid valve, with coil and connector, 3/4" female connection, specifically for water flow. The 220V MWGi normally closed water solenoid valve is a safety device that operates when powered; a minimum pressure of 0.15 bar is required for operation. If the valve closes due to a power failure, it can still be reset to operate domestic appliances. The 220V MWGi normally closed water solenoid valve is the combination of two fundamental functional parts, a solenoid electromagnet and a valve body, specifically designed to close or open a water passage in a circuit via an electrical command.