... ,air-conditioning refrigeration units and dehumidfiers.Diaphragm solenoid valve structure principle . Diaphragm solenoid valve basic stucture is composed of a coil ... . -20°C to 50°C max Rating power 6W 2.Diaphragm solenoid valve drive pressure .220v ac (+10%,-15%), 50Hz 12V ... dc±10% 3.Diaphragm solenoid valve strengh:wind and crust ,1500Vrms working pressure ,0-3MPa