Last July, when the pump service installed my new pump, wire and pipe they installed 2 check valves. Told me it's a 'must' to have 2. when the pump from the well would start up to fill my cistern, the water came out almost immediately. Now, it takes a little time for the water to begin.m Additionally, I am only getting about 5 - 10 mins of fill before the pump saver shuts things down.
I shut off power to the well pump last night. I stood next to the cistern & listened to the water filling this morning. Normally it might gurgle a little at first, after beginning the fill. Today it took a little while for the water to get going, then it burped and gurgled and began filling. During the duration of the filling, I heard the burping and sputtering from time to time. This is unusual. It was not the the typical smooth fill. Typically when the well saver stops the flow the sound of the water is pretty shallow by then. Today the sound was still pretty strong, yet it shut off.
Do any of these strange new things sound like a faulty check valve?
PS: Thanks for answering Cary. BTW, the CSV I installed last week works great! Thanks for all your help.)