I'd like to comment on the Newton valve possiblity for the RV14. Dont know if we are talking about a duplex install or not, but I'll address that. YES, you can install it. Several differences between it and the FS2020 Andair that we designed our package around.
First is the ports for the wing lines on the Newton are in the AFT location and more inboard than the Andair. Also---Andair uses 90* elboes (EF20's) to come out of the side ports and turn aft. Yes--the Newton valve has straight fittings that may make things alittle easier. DEFINATELY have to redesign the supply and return tubes to fit this valve.
The install height of the Newton valve 'May" be different than the Andair, which may create some challenges. The front discharge/return ports are not an issue.
Below are a couple of pics---the first one is the Andair FS2020 duplex valve in a RV14A---(never mind the hose part). Wanted to show the rigid tube profile at the valve.
The 2nd pic is of Krea Ellis' Newton valve in his RV10/SDS install.
Here is the real issue. Most all of the Vans planes, as well as ALOT of other manufacturers, have designed their systems around the Andair FS2020 valve. So redesigning a hose/tube system for these is not hard, but pretty time consuming. Especially where rigid tubes are used, like the RV14. Hose isnt as big a deal. And while the Newton valves may be faster to get, some extra development would be needed to do a modified package. Yes---Ive thought of it. Krea and I worked through his Newton install.
Actually I was hoping that Andair could produce alot more valves than they currently are. Yes, I understand that the experimental market is only part of what they do, but its become a problem. I looked into designing a couple of valves to fill the void with a duplex, a -2 style for the RV14s, a -7 style for the 7s and 10s, etc, etc. But it would take a bunch of time and some 'other' machining capabilities. Doubt we would undertake that.
Tom