Something is restricting water flow through the valve. My first guess was the solenoid circuit (water portion not electrical) wasn't working. Shut off the water and open up the top portion of the valve. Look for holes in the diaphram. Make sure everything looks like it seals correctly and nothing is restricting the travel of the diaphram. I still think there is a relationship between the problem and you opening up the solenoid. There is a small discharge seat at the end of the plunger (you didn't say what brand valve you have). If there is debris in this opening it will restrict the valves ability to open. Do NOT damage the edge of the discharge seat. Remove the debris.

Maryanne------I just talked to my DH about Tioga County and he said it is gorgeous------- His friends go snowmobiling somewhere near that area--- I wish you the best of luck and you are so right about doing it now-----while you are still young enough to make the move. My roses are not looking very good right now----- Viking Queen is a good choice----and the group of roses called Albas do well in the colder areas check out the Antique Rose forum and gallery----- Celestialrose lives in N.H. and she has gorgeous roses-- She sent me a cutting from a rose she found in an old cemetery------it now has some leaves---can't wait to see it bloom---Celeste says it is a tough rose. Good luck and keep me posted------- I love to hear about new adventures. Florence ---

I have had this problem happen to me twice. The first time was really odd. For a few mornings when I walked our dogs by our well shortly after I moved into the house, I heard a slight rumbling sound from the well head area. But it was very muffled. After a while I investigated. The area around the well was landscaped with bark dust laid over black plastic. The connection between the well head and the PVC line that ran to the house had developed a tiny crack. A needle-thin stream of water was shooting out and eventually bored a hole through three feet of dirt but was blocked by the black plastic (which caused the rumbling sound I heard). Easily fixed. The second time I noticed the problem because the well kept cycling and eventually I began to lose water pressure. So I dug up the well head figuring the same thing had happened. No luck. So I dug at the other end where the PVC line comes into the house (thank god the prior owner left me detailed drawings of the plumbing layout). This was a real pain since the line was about 4 feet underground and the loss in water pressure occurred when it was about 35 degrees outside and raining. I dug down and eventually got to a giant muddy mess where the PVC line connected to a copper line. The fitting was cracked. My guess is that in both cases the builder wasn't terribly carefully in ensuring that the PVC was placed on very solid soil in the trench near the connections to the well and house.

magdiel1975, Actually, it is quite common for a toilet flush to cause a reduction in water pressure in some homes. I have no experience with wells, but I would observe that your water pressure of 28 psi is very low in my experience if I understand your post. Are you saying your pump comes On at 30 psi and secures at 50 psi? I'm used to potable water pressure being something north of 40psi. If my lack of experience in having a well shows my ignorance, I apologize in advance.