I have purchased 6 of these Orbit valves. Not too much will go wrong if you install them properly. Properly means, among other things, the valve is above the highest sprinkler by the amount indicated in the instruction sheet. They can be a little leaky during operation so you should pay attention during initial startup to determine if there are any problems. I have had none in the 6 months of having an automatic system. There are other choices but not much different in construction if plastic. I replaced a brass valve system with this one and the brass valves leaked.