Liquid supply cutoff valve and liquid supply cutoff device incorporating the same

摘要

The present invention provides a liquid supply cutoff valve that quickly shuts the liquid line of beer from a beer tank with the pressure of carbon dioxide gas at the moment a beer tank is running out of beer. The liquid supply cutoff valve of the present invention includes a primary liquid line, a secondary liquid line, a valve chest between the primary liquid line and the secondary liquid line, a spherical valve plug arranged in the valve chest, wherein the spherical valve plug is lower in specific gravity than a liquid in the liquid lines, and a valve seat arranged at the lower end opening of the secondary liquid line in the valve chest, wherein the spherical valve plug is seated on the valve seat when the spherical valve plug is upwardly shifted, and wherein an inside opening of the primary liquid line to the valve chest is set to be at a level higher than the valve seat.