My brother has a creek below his house that he pumps water up the hill from. He just installed a new tank/ pump(ventura) but cant get it primed. the new system has the main pipe comin out of the water to 2 pipes, a 1 inch and a 11/4 inch. on the 1 inch pipe he needs some kind of valve i guess which allows a certain amount of air water mixture to prime the pump. does this ring a bell with anyone that can help?