SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

Is the system installed on level ground? Are there any emitter devices on ground level, or are they on risers. Are these actual emitters or low volume sprays?

Adjustable Shrubbler type emitters? Sounds like it..the kind you can open and close and anything in between?



They tend to "adjust" themselves if you know what I mean.....even the "flag" type emitters will do this sometimes......I recommend switching to a pressure compensating type emitter...this type of emitter will NORMALLY not have this problem, level ground or unlevel ground.....

I think we may need more info.

Are you giving the system enough time to bleed all the air out on restart?

I am guessing here, but it is about all I have got so far. I would guess that since they are all installed on the ground level, they are draining when the system is turned off. When the system is turned back on, the water / air rushes through and causes the adjustable emitters to self adjust themselves / or give a spitting sound or effect. This can give the the false since on the emitters not having adequate pressure / or flow. I would suggest pressure regulation on all of your low volume / drip lines, and allow adequate time for the system to stabilize before checking it again (turn on and let run for about 10-15 mins). Most low volume systems are just that, real low volume, and they need more time to deliver unlike their standard irrigation counterparts. Its a stretch and its a guess!