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Plastic water solenoid valve control the flow of fluid using the flow of electrons. This liquid valve would make a great addition to your robotic gardening project. There are two 1/2"" (Nominal NPT) outlets. Normally, the valve is closed. When 12VDC is applied to the two terminals, the valve opens and water can push through. The valve has a gasket arrangement inside, so there is a minimum pressure requirement of 0.02Mpa (3PSI). Also, liquid can only flow one direction. This solenoid can be actuated down at 6VDC (although it was a little slower to open). Here is the current draw table for various voltages. We suggest a TIP120 or N-Channel power FET with a 1N4001 kickback diode to drive this from a microcontroller pin. For a power supply, a 9V 1A or 12V 1A power adapter will do the job. If you want a beefier water valve, we also carry a brass version which does not have a minimum pressure requirement and can be used with liquid flow in either direction (MCM Part# ).

• Working pressure range from 0.02 Mpa - 0.8 Mpa
• Working temperature range from 1⁰C to 75⁰C
• Response time (open): ≤ 0.15sec
• Response time (close): ≤ 0.3 sec
• Actuating voltage: 12VDC (but we found it would work down to 6V)
• Actuating life is ≥ 50 million cycles
• 4.3oz weight
• Dimension is 3.3" x 1.69" x 2.24"