I'm really confused why so many people chimed in when there is no question that the electric water pump works and is a viable solution. I just enumerated the reasons why. If you don't want to use it fine, but my plan is for the least weight motor I can get.I do have a customer using an electric WP in his aircraft. Working fine so far too.
I guess people think I'm gonna sneak into their hanger and swap a water pump in the middle of the night.
I'll just have to sulk quietly knowing that so many people will never invite me into their home