This solenoid valve allows users to adjust the water flow. It'd be a fantastic addition to robotic gardening projects. The valve is normally closed. The solenoid coil controls the valve electronically with a DC 12 volt supply. It opens the flow of fluids as soon as it is switched on and stops/blocks the flow when the supply voltage is withdrawn since it is a typically closed assembly. There are two types of solenoid valves to choose from. The "Inlet Valve" is used for water influent and has a working pressure of 0.02 Mpa – 0.8 Mpa, whereas the "Drainage Valve" is used for drainage and has a working pressure of 0-0.02 Mpa. Please pick the appropriate option.