hi there uncle harry nice to meet you bingo I think we are on the same page a few more ?? I am ordering a pump from surplus center from Lincoln neb. a 16 gpm calls for a 8 hp motor. from the splitters I have built be for that was a gas engine.is a elec. more stable power than gas and is 3 ph more stable than just 220??it is a too stage pump the low stage is 16 gpm and the hi stage is 4 gpm. . do you think that the to stage pump will do what should ? without by pass valve or elec. what ever? if a man was short power switch off the one you would not be using and restart it each time pain in the butt. but mite help if it did not work as one liked. thanks for the top shelf in fo this a super cite lots of help on all most any thing thanks to gentlemen like your self if I was still on the road would stop by and buy you a cup of 100 mile coffee drove 0ne of the big orange semi got out in 1990 40 years on the road have a good one take care of you and yours gotogojo