Patent ID: 8261777
Filing Date: 2012-09-11
Classification: F04B,F16K,Y10T

Abstract:
1. A valve comprising: a flexible tube having an inlet portion and an outlet portion; a spigot comprising a spigot inlet portion and a spigot outlet portion; the inlet portion of the flexible tube sealed relative to the spigot; wherein inner surfaces of the flexible tube outlet portion downstream of the spigot outlet portion close together when the valve is closed; at least one stiff reinforcement engaging the flexible tube and adapted to pivot at an inlet end so that an outlet end of the reinforcement moves toward and away from a centerline of the flexible tube; wherein the reinforcement reinforces the flexible tube against an externally applied pressure when the valve is closed; wherein the reinforcement is attached to an inner surface of the flexible member; wherein the spigot outlet portion comprises one or more inclined surfaces against which the flexible tube abuts when the valve is closed in the presence of backpressure.