METHOD AND APPARATUS FOR METERING LIQUIDS

摘要

A method and apparatus for delivering metered quantities of a liquid wherein the liquid is circulated through a chamber to fill the chamber with liquid and circulation is temporarily terminated with the chamber filled with liquid. While circulation is terminated gas under pressure is admitted to the chamber to displace liquid therefrom through a discharged port. The quantity of liquid displaced being controlled by regulating the volume of the chamber and/or by regulating the relative disposition in the chamber of the point of entry of the gas and point of discharge of the liquid.