Ok, I spent the last 6 hours replacing a checkvalve that had become defective. Now that I have the new system primed, the pump builds pressure to approx 42 psi and cuts off. It immediately begins cutting on and off at the pressure switch until it gets back down to it's cut on pressure of about 25psi. After the first or second round of this, the chug sound reverberating through the whole house continues for about 10 seconds and tapers off in both frequency and strength until about 38 psi where the drama stops. I've checked my pressure tank for waterlogging, and everything seems to be fine there. I even closed the valve to it for a test that didn't go as I had planed! I've also tested to ensure both the pump and the line from the check valve to pump are still primed and they are, it's about 9" from valve to pump. The well is ouside about 30 ft away. Here's my hardware: Blue Angel - Jet Pump Water System Shallow Well SBS50 LDR - Swing Check Valve 3/4" 200WOG My first suspicion was that I purchased the wrong check valve as it sounded like it was blowing back, but it says it's rated to 200 lbs. I don't know if that's ok or not, but I think it is. I did have to get some funky hardware connectors, and since I'm not sure if it is part of the problem, I'll add them. From the 3/4 copper pipe from the well, I have a 3/4 soldered to 3/4 threaded adapter into the check valve. Exiting the checkvalve is a nipple connected to a 3/4 to 1/2 threaded adapter. The female end of that is connected to a 1/2 threaded to 3/4 soldered adapter, then into the original union to the pump. If there is a problem with the adapters, would it be in the downsize then upsize portion? Have I created a sort of venturi effect here? Any help would be greatly appreciated, I'm going to bed now, and expect an altering hot/cold shower in the morning. I'll check back to answer any questions you have, and prepare to try any solutions you can suggest. Thank you from Alaska! Jon

I recently replaced my pressure tank and switch. Unfortunately when replacing the switch the switch now rests against my tank. I wanted to see if it was a bad idea to put a couple of bends in the stem to the tank "T" and then reattach the pressure switch. The switch is a 30/50 switch bouhgt from a big box store, but when the pressure builds it only rises to 45 psi. I looked at the lid of the switch to see how to adjust the cut off pressure and I do not think I am doing it correctly which has caused me to mess it up. Any help would be greatly appreciated.