Normally closed miniature solenoid valves, and open when energized, and close when off. Solenoid valves can maintain constant current flows and are and maintain. This electric solenoid Valves is N/C normally closed type. Make from Metal and which can bear wear and ensures long term use. It can be used as water valves or air valves and has a wide ranges of uses. For example, automatic watering control for flowers., Manufacturer: CHAKAE