Patent ID: 6070553
Filing Date: 2000-06-06
Classification: A01J,F16K

Abstract:
A valve for controlling the flow of a fluid, such as milk, through a fluid conveying line, comprisingan elastic tubular sealing unit having opposite ends which are adapted to be connected to inlet and outlet connectors respectively,a housing coaxially surrounding the sealing unit so as to form a closed chamber therebetween, and with a connection communicating with the closed chamber and leading to a controlled outside pressure source,a structure engaging at least one section of the sealing unit and so as to apply a radially outward force on the sealing unit and deform the sealing unit into a partially collapsed configuration in a non-actuated state,whereby a positive pressure differential between the pressure within the chamber and the pressure within the sealing unit may be used to fully collapse and thus close the sealing unit.