Can anyone give me some insight into what happens in terms of presure on both sides of a pump when it is used in a system like a house's water well. I had a leak on the suction side of mine and it seems it took on air when the guage on the tank got up to about 50 lbs. When the pump shuts off, is the suction side still under vacume until enough air enters to equal out at atmosphere then starts to leak water out? Just wondering out loud. I know there are some pretty technical guys on here.