Question
I have a RainJet valve attached to an automatic timer.  When turned on the valve goes thump,thump,thump and the water coming out of the various emitters goes spurt, spurt, spurt.  Is there a solution besides replacing the unit?  Thanks

Answer
Hey Paul, I hope this helps. I would suspect that the diaphram inside the valve has gone bad. Go to this website: www.irrigationtutorials.com and it will show you how to replace a diaphram. Let me know if I can be of anymore help, thanks and have a great day.