AbyssalPlains
Contributor
With doubles with an isolation manifold you can shut down the left or right post and still have full access to both tanks. It's only in the event you have a tank valve issue (burst disk or tank o-ring typically) that you have to isolate. Only then do you lose half of your gas.
I guess I sort of knew that in the back of my mind, but not really apparently. Thanks for clarifying, Hoosier!