Patent ID: 6164324
Filing Date: 2000-12-26
Classification: F16K,Y10T

Abstract:
A check valve, comprising:a valve body having an inlet, an outlet, and an internal cavity, said inlet, said outlet and said cavity being in fluid communication and defining a flow path, said cavity including a seat surface associated with said flow path;a disk positioned within said cavity;a hinge pin assembly pivotally interconnecting said valve body and said disk such that said disk pivots about a pivot axis between a closed position, in which said disk contacts said seat surface, thereby preventing fluid flow along said flow path from said outlet to said inlet, and an open position, in which said disk does not contact said seat surface, thereby enabling fluid flow along said flow path between said inlet and said outlet, said hinge pin assembly comprising:a substantially cylindrical hinge pin having a longitudinally-extending bore formed therein, said hinge pin being attached with said valve body and extending substantially parallel to said pivot axis, said hinge pin bore being eccentrically located within said hinge pin;a substantially cylindrical hinge pin core attached with said disk and said valve body and extending within said hinge pin bore substantially parallel to said pivot axis; andmeans for eccentrically and rotatably mounting said hinge pin relative to said valve body;biasing means associated with said disk for biasing said disk toward the closed position; andan indicator associated with said hinge pin assembly and attached to said valve body, said indicator being responsive to pivotal movement of said disk and indicating the pivotal position of said disk.