I know I'm jumping in late but could you press the air valve on your pressure tank and tell me what you hear or see? If no water appears what is your baffle pressure? It looks rusted on the out side makes me think it could be rusted on the inside rubber baffles get corroded with rust from well water and crack. I placed mine after the water softener for that reason. I was only getting 3 years per pressure tank.Watch your gage if it goes up and down without stopping your pressure tank is your problem.
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