one valve will not actuate or manually open.
I replaced all valves in a 7 valve series. I have a functional rainbird commercial controller. I troubleshooted the new valve extensively, 24V at the solenoid. I replaced the entire valve with a jartop and repeated the troubleshooting steps. Still will not open. could there be an obstruction within the outflow causing this. What are your thoughts? How do you recommend further testing.