... oppearance ,long-lasting . diaphragm solenoid valve is a small flow,hard seal and closed solenoid valve ,can be used for deforsting ... 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 ...