[Sorry if this question has been answered, but I can't seem to get the search engine to do an *AND* search rather than *OR*.]
I have a Rainbird JTV/AS-100 anti-siphon valve (poorly written "manual" available at RainBird Website). For some time, when the valve is turned on (electrically, manually with the bleed screw or manually with the solenoid) there's a satisfying "thump" and the sound of a healthy water flow. After 30 minutes-1 hour (sometimes less), the flow slows to a trickle, then stops. There's an inline filter screen upstream that has been cleaned and water pressure at the filter's back end is *strong*. Thinking that this points to the valve diaphragm, I swapped it with an unused (but 3 year old) one. No change. [I have 4 other valves that work fine.] Is it possible that the valve solenoid is bad? I don't see how since I can turn it on manually and there's no improvement. Also, the bleed screw should bypass the solenoid altogether. I also tried swapping the diaphragm housing- no luck.
Suggestions???
I have a Rainbird JTV/AS-100 anti-siphon valve (poorly written "manual" available at RainBird Website). For some time, when the valve is turned on (electrically, manually with the bleed screw or manually with the solenoid) there's a satisfying "thump" and the sound of a healthy water flow. After 30 minutes-1 hour (sometimes less), the flow slows to a trickle, then stops. There's an inline filter screen upstream that has been cleaned and water pressure at the filter's back end is *strong*. Thinking that this points to the valve diaphragm, I swapped it with an unused (but 3 year old) one. No change. [I have 4 other valves that work fine.] Is it possible that the valve solenoid is bad? I don't see how since I can turn it on manually and there's no improvement. Also, the bleed screw should bypass the solenoid altogether. I also tried swapping the diaphragm housing- no luck.
Suggestions???