Well, it's been a while since I've added a forum discussion but I need some advice and thought immediately of LJN.Here's the situation (I'll try to be as brief as I can, but irrigation is never simple!):I've managed to get myself gainfully employed at a nursery in Cobham and have inherited responsibility for the irrigation system. We're currently running 6 Galcon DC4 (model 6004) controllers which are controlling various numbers of PN-10 valves. The old valves were insulated against the cold winter, to varying degrees of success, which has left me in the situation that some of the old ones work and the others leak like a very leaky thing indeed. We have duly bought new PN-10 valves but now are stuck with a compatibility issue - the solenoids which were supplied with the new valves are not compatible with our DC-4 controllers. The old solenoids (which are compatible with the controllers) are not compatible with the valves.So at the moment we're looking at either investing in new controllers or shifting to a new system entirely and my question is this: Does anyone have experience (good or bad) of any systems, particularly I'm looking for a system which will hopefully bypass this compatibility issue so that we're not facing the same problems in another twelve month's time. Also, (before anyone tells me the obvious!), I'm not planning on leaving the valves in the system over winter - I think we've learned that lesson the hard way!.Any advice would be very welcome.Thanks,Andy FOh, by the way, we run the system from a 2 bar pressurised tank, if that makes any help?