Hi, when I remodeled by two bathrooms in the mid ninetys I used rookie 1.6 gallon toilets. Since they don't function with single flushes and have been my misery and house guest's embarassment I swore when I built my lakehome that I would install commercial toilets. Following great advice here and through savy e bay shopping I have aquired a new kohler top spud toilet, a sloan auto flush valve, and and a Amtrol RP15 pressure booster system (for little more than the cost of shipping I might add). I have my camp garage workshop structure up with as-of-yet no internal framing, and the septic tank is installed and half filled with water. So I'm ready to "go" so to speak. I also have a RV style pressure booster system with a 1 gallon accumulator tank that I bought with the intention of driving a shower, and a Ace in the Hole sump pump with the intention of feeding a gravity tank in the rafters. The eventual well will be able to produce the over 10 gpm in the RP15 requirement specs, but for now I only have a gravity tank arrangement. The toilet will require a small amount of water at high velocity, which from this forum the best guess is that the RP15 will handle that. My question as how I can simulate the city water feed for short instances to start and after each flush. I think the RP15 spec call for 10psi min and 15gpm minimum. My sump pump is rated over that. Anyone have any ideas? I have PLC programming & motor control experience so I could automate these devices with pressure, limit or flow switches in the piping to and fro. I will dual post this in the toilet and pump sections. TIA!