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Title: Impossible to find replacement parts
Review: We used these to replace our valve system three years ago. One of the diaphragms started leaking and Orbit has changed the design enough that the new diaphragms won't fit the old valves. To make matters worse, they use the same item number for the new design so it's impossible to search for the older parts. If you install these, buy several extra diaphragms and solenoids so you don't have to replace the entire valve when the parts fail.
