ORIGINAL: olnico
Yes, that's what I have on the F-18F. But then It is nearly as practcial to have a separate system.
Also, having separate valves, you can separate the tank source ( ie have as many tanks as valves ). This can be very important for high flow demand setup like the big FEJ F-16.
It would still consume much less space than seperate units.
Can you elaborate why you need as many tanks as valves for the gear ? i would think you would like seperate tanks for other pneumatic functions, but why run a few seperate (non Y'd) tanks for the gear ?