Patent ID: 6171367
Filing Date: 2001-01-09
Classification: B01D

Abstract:
A method for delivering and recirculating a liquid comprising the steps of:providing a liquid reservoir and storing a liquid therein,transporting the liquid through a first conduit to a pump,pumping a predetermined amount of liquid through a second conduit to a first liquid/air separating device having at least a first outlet and a second outlet,dispensing a substantially air bubble-free liquid from said first outlet through a third conduit having a first valve that is fully opened, andrecirculating a liquid containing air bubbles from said second outlet through a fourth conduit having a second valve which is adjustable and is opened less than 50% of its total opening to said liquid reservoir and using a semi-transparent material for at least one of said first, second, third and fourth conduit and visually determining the presence of air bubbles in the liquid.