How to disable fuel flow without locking tanks

[linuxgurugamer]

Is it possible  to have to connected tanks, but to disable the fuel flow between them?  I know that fuel delivery can be fiddled with, but doesn't stop it entirely.

• For example the ship has a central tank and some outer tanks surface mounted.  
• there are engines on both the central tank and the outer tanks
• The outer tanks have a built-in decoupler
• Staging is set up to have the inner engine fire when the outer tanks empty and are ejected

What happens is that the outer tanks empty first, and when they are empty, start draining the inner tank.

So I know if I put in an extra part it can be done, but would like to incorporate it into the part itself

If needed I can write a module, but was wondering if it's been done already.

Thanks

Gaaah

I think what I need is ModuleToggleCrossFeed

Edited August 20, 2017 by linuxgurugamer

[The Aziz]

Wait what.

I mean, it's extremely useful for stage recovery

So... What?

[jhousen]

hmm, disable crossfeed on the decouplers...

wait...are we talking modded tanks? or stock?

Edited August 22, 2017 by jhousen
???