I LOVE IT!!!! Your explanation helped me out a bunch. Heck of a setup.. Now I really am jealous!! As a firefighter, I love to see people who think the way you do. Makes our job a lot easier. Now what would be neat is if you set up a valving system where the fire dept. could pull up and you could switch off your supply(in case it goes dry) and a tanker could hook up to you and supply your system. It looks like you used standard fire hose cennections. 1 1/2 or 2 inch?? They could utilize that to directly connect their hose and as we say, "put the wet stuff on the red stuff".
In my earlier reply, I hope I did not insult you, your system or your level of firefighting ability when it comes to house fires. I have only been in our local department for 11 years, but I have seen a lot of people get rushed off to the hospital trying to save their house from fire. I know myself, if I were in that position (God forbid) that I would be dragging out the garden hose and doing what I can to save what I have worked so hard for.
Once again, I love your system (and jealous that I do not have one), and my hats off to you for the thought and work you put into saving what YOU have worked so hard for.
Take Care,
Dave