A flush adaptor for use with a valve fitment assembly for dispensing liquids from a container; wherein said flush adaptor comprises the following: an outer ring-collar having a top and a bottom and an outer and inner surface and having threads molded into said outer surface of said outer ring- collar; a flange with an edge molded to the bottom of said outer ring-collar of said flush adaptor; an interior ring-collar having a top and a bottom and an outer and an inner surface molded in adjacent relationship to said outer ring-collar near the top of said interior ring-collar, and wherein said outer surface of the top part of said interior ring-collar and the top part of said inner surface of said outer ring-collar forms a U-shaped channel for receiving a part of said valve fitment assembly; an inverted dome structure molded toward the bottom of said inner surface of said interior ring-collar defining at least one opening for the flow of fluid therethrough; a ridge molded in said inner surface of said interior ring-collar centrally positioned in said interior ring-collar; a seat molded onto the bottom of said interior ring-collar for forming a seal with said valve fitment assembly; a pin molded into the bottom of said interior ring-collar, which engages said valve fitment assembly and keeps the valve in said valve fitment assembly in an open position thereby allowing flow of fluid through said valve fitment assembly; and (VIII) a hollow tube molded into the bottom of said adaptor and to said pin to allow the flow of liquid through said adaptor and into said valve fitment assembly; whereby the flush adaptor connected to said valve fitment assembly allows for cleaning of said valve fitment assembly and any tubes connected thereto by passing a liquid through said hollow tube of said flush adaptor and into said valve fitment assembly and lines connected thereto, thereby cleaning said valve fitment assembly and lines. an outer ring-collar having a top and a bottom and an outer and inner surface and having threads molded into said outer surface of said outer ring- collar; a flange with an edge molded to the bottom of said outer ring-collar of said flush adaptor; an interior ring-collar having a top and a bottom and an outer and an inner surface molded in adjacent relationship to said outer ring-collar near the top of said interior ring-collar, and wherein said outer surface of the top part of said interior ring-collar and the top part of said inner surface of said outer ring-collar forms a U-shaped channel for receiving a part of said valve fitment assembly; an inverted dome structure molded toward the bottom of said inner surface of said interior ring-collar defining at least one opening for the flow of fluid therethrough; a ridge molded in said inner surface of said interior ring-collar centrally positioned in said interior ring-collar; a seat molded onto the bottom of said interior ring-collar for forming a seal with said valve fitment assembly; a pin molded into the bottom of said interior ring-collar, which engages said valve fitment assembly and keeps the valve in said valve fitment assembly in an open position thereby allowing flow of fluid through said valve fitment assembly; and (VIII) a hollow tube molded into the bottom of said adaptor and to said pin to allow the flow of liquid through said adaptor and into said valve fitment assembly; whereby the flush adaptor connected to said valve fitment assembly allows for cleaning of said valve fitment assembly and any tubes connected thereto by passing a liquid through said hollow tube of said flush adaptor and into said valve fitment assembly and lines connected thereto, thereby cleaning said valve fitment assembly and lines.