I have two valves that are having issues, and two that are not. They are all Rain Bird - 100ASVF - 1’’ Plastic Residential Anti-Siphon Irrigation Valve w/ Flow Control - Female Pipe Thread.
I have to shut off the water to the pipes to the valve or they continuously drip water. Sometimes they will leak water from the side that doesn’t have the node. Ive cleaned them out, tested them to make sure there isn’t a current going to them, and even tried to shut them off by using the flow screw on the node side, but the only thing that works is cutting off the water entirely.
Both of these are the newest of the 4 valves I have, and are about a year old.
Is there anything else I should be checking? At this point I just want a system that works. Any recommendations for valves if these have to go?