09-16-2016, 04:09 AM
It's not pumping water that kills the pump it's starting it up. The pressure tank reduces the on/off cycling. The bigger the tank, the less frequently the pump runs, and the longer it will last. There are some systems that don't use pressure tanks but they use a specific type of pump. When my tank goes I'm going to replace it with the biggest one I can afford / fit in there. When the power is out it's nice to have a lot of water in the tank.