A system for dispensing a cryogenic liquid comprising: a. a bulk tank defining an interior that is adapted to contain a supply of the cryogenic liquid; b. a pressure builder having an inlet in communication with a bottom portion of the interior of the bulk tank and an outlet in communication with a top portion of the interior of the bulk tank; c. a liquid dispensing line in communication with the bottom portion of the interior of the bulk tank; d. a storage pressure sensor configured to detect a pressure of a supply of cryogenic liquid contained within a bottom portion of the interior of the bulk tank; e. a saturation pressure sensor (292, 406) in communication with the bottom portion of the interior of the bulk tank; f. a pressure building valve in circuit between the bottom portion of the interior of the bulk tank and the inlet of the pressure builder; g. a vent valve in communication with the top portion of the interior of the bulk tank; and h. a controller (300, 410, PLC) in communication with the storage pressure sensor and the saturation pressure sensor (292, 406), the pressure builder valve and the vent valve, said controller (300, 410, PLC) programmed to determine a bottom pressure using data from the storage pressure sensor, determine a saturation pressure of the cryogenic liquid, compare the bottom pressure with the saturation pressure and control operation of the pressure builder valve and the vent valve based on data from the storage pressure and saturation pressure sensors (292, 406) so that, as a liquid level of a supply of the cryogenic liquid in the bulk tank falls during dispensing of the cryogenic liquid through the liquid dispensing line, a pressure set point to turn on the pressure builder valve increases to compensate for a loss in a liquid head pressure so that cryogenic liquid flowing through the dispensing line is maintained at a constant pressure. a. a bulk tank defining an interior that is adapted to contain a supply of the cryogenic liquid; b. a pressure builder having an inlet in communication with a bottom portion of the interior of the bulk tank and an outlet in communication with a top portion of the interior of the bulk tank; c. a liquid dispensing line in communication with the bottom portion of the interior of the bulk tank; d. a storage pressure sensor configured to detect a pressure of a supply of cryogenic liquid contained within a bottom portion of the interior of the bulk tank; e. a saturation pressure sensor (292, 406) in communication with the bottom portion of the interior of the bulk tank; f. a pressure building valve in circuit between the bottom portion of the interior of the bulk tank and the inlet of the pressure builder; g. a vent valve in communication with the top portion of the interior of the bulk tank; and h. a controller (300, 410, PLC) in communication with the storage pressure sensor and the saturation pressure sensor (292, 406), the pressure builder valve and the vent valve, said controller (300, 410, PLC) programmed to determine a bottom pressure using data from the storage pressure sensor, determine a saturation pressure of the cryogenic liquid, compare the bottom pressure with the saturation pressure and control operation of the pressure builder valve and the vent valve based on data from the storage pressure and saturation pressure sensors (292, 406) so that, as a liquid level of a supply of the cryogenic liquid in the bulk tank falls during dispensing of the cryogenic liquid through the liquid dispensing line, a pressure set point to turn on the pressure builder valve increases to compensate for a loss in a liquid head pressure so that cryogenic liquid flowing through the dispensing line is maintained at a constant pressure.