Welcome to the forum!!

Even a fairly small pump will draw the air out and pull water in...Cap off the outlet, tap into the siphon at the high point and connect the vacuum pump with the method of your choice. I personally used my aeration pump and put a clear bowl water filter between the siphon tube and my pump so I didn't trash the pump...Even a small "oil suction" pump can be used if no power is around.

Another method is to bucket fill the outlet side pipe....when you pull the outlet cap, the weight of the water exiting will pull the inlet pipe side full and usually start your siphon. Be sure it is air tight or it will be a waste of time all around.

A high flow vacuum pump would be hard to shut down before filling with water.....

Last edited by Rainman; 11/25/12 11:49 AM.