ebstauffer:
- 1 1/4" flow meter. I can't seem to locate one that's under $900
- Valve type. Typically this process takes under 15 minutes. Somewhat concrned about powering a solenoid for that long. I've no experience implementing and h-bridge in arduino that woudl be required for a latching solenoid
just can't seem to find the correct pieces and parts.
You clearly haven't been looking hard enough. $20 or so - each - should see you with both those devices. You can get complete kits with controller and display for under $100. No Arduino needed.
Your supply authority really shouldn't be interested on what you do on your side of their meter. Your insurance company might be though.