Patent ID: 6260273
Filing Date: 2001-07-17
Classification: E03C,Y10T

Abstract:
A method of providing a venturi based vacuum valve comprising the steps of:(a) forming a cylindrical plug having a longitudinal axis therein;(b) forming a first small constant diameter opening along the longitudinal axis of the cylindrical plug;(c) forming a second large constant diameter opening along the longitudinal axis of the cylindrical plug wherein the first opening intersects with the second opening within said cylindrical plug;(d) forming a third opening in said cylindrical plug transverse to said first opening and before said second opening so as to connect said first and second openings to the atmosphere; and(e) fitting said cylindrical plug to a pipe so that said first opening forms an inlet to receive water from said pipe and said second opening forms an outlet and aligning said third opening with an opening in said pipe so that air is introduced to said cylindrical plug.