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So I added a check valve and the problem is still the same, tank came precharged to 30/50 along with the pump settings. Here is a link to video footage of what is happening

H I am trying to install a burcam shallow well pump to pull water out of a holding tank. I got a new pressure tank and pump. When I plug in the pump it starts up and builds pressure to 50 psi, it then begins to rapidly and violently switch on and off until there is not enough pressure and...