As stated it might be possible that the threads are differnt, but on the down stream part, a combination of elbows are available. I would buy the irritrol valve online at sprinkler warehouse, dont DONT use the immitations at the hardware store, they dont last. once you get your valve you can order the elbows needed here, or you can get thye elbows locally. If you know what you might need, (probably a few 90's and 45's) then you can order it online at sprinkler warehouse. That would be your best bet!
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers