PCDiver

Hi Padowan,

nice drawings.

I'm using the GCS as well but I'm still working on some improvements. I like the ability to disconnect the solenoid and will implement that as well.

one-way valves - I don't think you need them. I believe your first stages will act as one-way valves but I'm not 100 percent sure. Can somebody else confirm this?

manifold - the manifold and all hoses to and from the manifold are single point of failure. If you rupture one of those you'll could loose a lot. Go through the entire setup and think what would happen if you loose a hose/o-ring or manifold.

automatic selection of diluent based on IP - that is too tricky. The IP of a first stage could change underwater (creep) and you don't know which tank you are using. Why don't you keep one tank open at a time? Especially if you are running different mixes. When you have problem with the loop and you have to bailout, you have time enough to switch to BOV, turn on the off-board and close the on-board.

Disconnecting the GCS underwater is not easy when they are pressurized. What you could do is take a deep breath from the regulator and disconnect at the same time. That should lower the pressure on the GCS with a couple of bars. Or close the tank completely, purge, disconnect and open the valve again.