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First pressurization of a new
.........or previously drained system. The x-tank has been charged to 15psi and you open the bypass valve to fill it quickly. You know there's a lot of air in the system, so you want to overfill it to help vent the air. The pressure climbs to 15psi and steadily increases to 25psi.
My questions is: Why doesn't the gauge pause at 15psi as the expansion tank absorbs the increase in pressure above 15psi? Or maybe it does and I'm not noticing.
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