Assuming this is a RV4, it would depend on where you are planning on mounting it. Have to pay attention to the handle and the letter bezel to make sure you are drawing from the indicated tank.
So a FS20x2, 3 or 7 7T would be fine. Again---mounting location and orientation are going to indicate what valve----or even the valve fittings.
Tom
Duh, makes sense now. I was on Andairs website and the follow on number confused me for some reason. Not enough coffee I guess. Thanks!
Thanks Tom,
I built and fly a “4” so my screen name might be misleading. It is for an RV-10. To the other responder, what Andair valve did you use?
I've read that the 6" length is suitable. I have all my parts and pieces, but haven't begun the install yet.