Abstract: Constant volume and therefore constant flow rate apparatus is provided for removing bubbles of gas from a process liquid that is used in the manufacture of a product where the presence of such bubbles has a detrimental effect on the quality of the finished product. Gas bubbles are removed from a liquid by passing the liquid through a bubble coalescing baffle, in a generally upward direction, and into a chamber situated directly above the baffle, the chamber having an upward sloping upper surface, and a gas vent at the upper portion thereof, that is laterally displaced a substantial distance in the direction of liquid flow from the center of upward liquid flow, for the purpose of continuously venting gas bubbles that have separated from the liquid without allowing a significant volume of gas to accumulate in the chamber and without allowing the liquid to exit through the gas vent.