Abstract: An apparatus for removing gas from a flow of liquid includes a shell having an inner cavity for carrying the flow of liquid. A venting device includes an inlet in fluid communication with the cavity of the shell, an outlet in fluid communication with ambient air, and a chamber interconnecting the inlet and the outlet. A float valve device controls fluid flow between the chamber and the outlet. The float valve device includes a float that follows a level of the liquid in the chamber. A pivot arm is connected to the float and is actuated by the float such that the pivot arm prevents fluid flow from the chamber to the outlet when the level of the liquid in the chamber is above a predetermined level, and allows fluid flow from the chamber to the outlet when the level of the liquid in the chamber is below the predetermined level.