Did that ... searched on "STICKY modding valve" and got pages of misc. spud gun palaver related to pneumatic spud guns but nothing I could spot in particular about modifying the 57020. I don't want to make a lifestyle out of this project ... I am trying to avoid spending days reading pages upon page...

Thanks for the link. That get's me to first base. Can you also point me to some or an example of how to modify the sprinker valve for pneumatic use. Except for spud tech who used to sell them, I can't find examples on the web ... that's why I came looking for a forum... illustrated or step by step i...

I am a complete newbie... giving me Orbit's website didn't help because I can't find the watermaster on the site... I have no idea of what category to look under and searches only turn up press releases... On top of that I wouldn't know what a guide rod looked like if it walked up and bit me! With a...

HOw do you know if the watermaster has a guide rod or not? Anybody got a picture?

db