Instructables

Step 7: Firing Circuit

Picture of Firing Circuit
The solenoid valve says it requires 24 volts to open, if I remember correctly. Three 9v batteries in series will definitely open the valve. Connect them i series with a switch as shown in the image below.

Some people like to have a rocker switch as a safety, and then use a pushbutton switch for firing. What you do is up to you.
 
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Pizzapie5003 years ago
What if your solenoid runs on AC?