I don't know if any of you are familiar with "Dig" products but I have some customers that have existing drip irrigation hooked up with Dig battery operated controllers on top of the valve they have a sylionoid that screws into where the normal one screws in and the controller sets on top of that. Well,have a lady had a leak there where they screw onn and also controller wont work(2-9V batts) So buy another controller and install it and try it out.!st try it clicks and runs water.I manualy (from comtroller) shut it back off..then it clicks but water wont come thru it. Unscrew it and turn on the main a little-water comes out of the top of where I unscrewd the sylinoid. So OK I have water,put back on and try to run it ,clicks on and off but no water thru the line water main is back on. What could possibly do this? It's a 97.00 brand new controller and the sylinoid clicks and I say the valve is OK cus water comes out the top. My problem has to be the valve am I correct?Even if the valve opened and closed before??