A system for inflating an inflatable intragastric device, comprising: an inflation fluid container having an inflation fluid container aperture and a reservoir holding an inflation fluid; an inflation fluid dispenser securely coupled to the inflation fluid container and comprising: a housing with an inner surface defining a channel having a proximal inlet coupled to the inflation fluid container aperture and a distal outlet positioned at a distal end of the inflation fluid dispenser; a valve disposed in the channel and configured to transition between a closed state and an open state; and a valve control coupled to the valve and configured for manipulation by a user to transition the valve between the closed state and the open state, an inflatable intragastric device having an inner cavity and a proximal aperture; and a catheter coupled to the inflatable intragastric device, the catheter having a lumen positioned between, and in fluid connection with, the channel of the inflation fluid dispenser and the proximal aperture of the inflatable intragastric device, characterised in that the inflation fluid dispenser further comprises: a pressure gauge configured to measure pressure within the channel between the valve and distal outlet, and a barometric pressure compensation valve configured to release a portion of the inflation fluid from the inflation fluid container through a vent to achieve a target starting volume within the inflation fluid container. an inflation fluid container having an inflation fluid container aperture and a reservoir holding an inflation fluid; an inflation fluid dispenser securely coupled to the inflation fluid container and comprising: a housing with an inner surface defining a channel having a proximal inlet coupled to the inflation fluid container aperture and a distal outlet positioned at a distal end of the inflation fluid dispenser; a valve disposed in the channel and configured to transition between a closed state and an open state; and a valve control coupled to the valve and configured for manipulation by a user to transition the valve between the closed state and the open state, a housing with an inner surface defining a channel having a proximal inlet coupled to the inflation fluid container aperture and a distal outlet positioned at a distal end of the inflation fluid dispenser; a valve disposed in the channel and configured to transition between a closed state and an open state; and a valve control coupled to the valve and configured for manipulation by a user to transition the valve between the closed state and the open state, an inflatable intragastric device having an inner cavity and a proximal aperture; and a catheter coupled to the inflatable intragastric device, the catheter having a lumen positioned between, and in fluid connection with, the channel of the inflation fluid dispenser and the proximal aperture of the inflatable intragastric device, a pressure gauge configured to measure pressure within the channel between the valve and distal outlet, and a barometric pressure compensation valve configured to release a portion of the inflation fluid from the inflation fluid container through a vent to achieve a target starting volume within the inflation fluid container.