Went out on a conversion project today. System was a Rain Bird TBOS controller, Irritrol 1-1/2" Century Plus valves and after-market low voltage solenoids. We've had nothing but problems with these solenoids which have had a tendency of sticking shut (plunger actually rusting) or allowing water to weep by and come out the sprinklers. These sprinklers were near a public sidewalk and were creating a slimy area. We ended up going with the Hunter WVC system (now our third one) which necessitated changing the valves out because the Hunter LV solenoids only work on their valves. Here's what we took out.