1hp , Sub pump, 40' well with Bladder Tank , Square "D" Switch with a Pumptec. I posted a Filter Placement problem the other day and cured that situation and after everything was up and running fine for about an hour I started to loose pressure in the system causing the pump to cycle every 2 minutes. I am assuming the the Valve in the pump is not holding the pressure in the system allowing the water to back flow through the pump back into the Well. I noticed air coming from the Vent of the Pump Seal and you can feel the water moving in the pipe at the Pump Outlet. If this is a Valve problem in the pump is there anything I can install on top of the ground instead of Taking this pump a part and replacing the Valve?