I bought 3 for the system we have. 1 works fine and opens at about the correct pressure of 75 psi, 1 opens too early (40 to 50 psi), and 1 opens too late (about 100 psi). . Or buy additional ones, you can get some that work properly by trial and error.
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DIGITEN DC 12V 1/4" Inlet Feed Water Solenoid Valve Quick Connect N/C Normally Closed No Water Pressure
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