I just replaced the pressure switch on a home water system. I primed the pump and pressure built up and water came out. Water was dirty at first but it was clearing up (it hadn't been run for a while). Pressure built up to 50 psi and cut off. Ran the water and it cut back on. Seemed to be working good, then it started leaking from a plastic bowl near the bottom of the vertical tank. There's a pressure line (like that goes to the pressure switch) that goes from the pump to the "bowl". I've seen similar things on home fuel oil tanks, but I don't know what it is called. Kind of hard to fix it if you don't know what it is. Any ideas?