Patent ID: 6644929
Filing Date: 2003-11-11
Classification: E03B,F16K,Y10T

Abstract:
Domestic water well pressure maintenance assembly, comprising:a pressure maintenance valve having an inlet side and an outlet side; a pressure tank in fluidic communication with the outlet side; a pump in fluidic communication with the inlet side; a pressure switch, wherein the pressure switch turns the pump on when a pressure in the outlet side is at a cut-in pressure and off when the pressure is at a cut-out pressure; and a calibrated bypass, wherein, when the valve is closed, fluidic communication between the inlet side and the outlet side is provided solely by the calibrated bypass, wherein the size of the calibrated bypass is selected with respect to the size of the pressure tank and the capacity of the pump such that, when the valve is closed, a flow rate between the inlet side and the outlet side supplies sufficient water to fill the pressure tank in a time interval at least as great as but less than twice the time required to pump a volume of water that will dissipate heat generated by the pump when it is turned on.