Patent ID: 6619308
Filing Date: 2003-09-16
Classification: G05D,Y10S,Y10T

Abstract:
A variable pressure regulator control device comprising:a valve body having a fluid inlet, a fluid outlet, a fluid pressure-sensing chamber, and a valve seat in fluid communication with said inlet and defining an opening into said chamber; a resilient member forming a wall of said chamber which is responsive to pressure in said chamber and which is self-restoring; a valve stem connected to said member and extending through said chamber towards said valve seat; a valve element supported on said valve stem and cooperating with said valve seat, said valve element being located between the valve seat and said fluid inlet; an adjuster mounted to said valve body in a position to deflect said resilient member and move the valve element away from the valve seat while a portion of said resilient member connected to said stem flexes in response to pressure changes within said chamber to control the position of the valve element with respect to the valve seat; wherein said valve body includes a base incorporating said inlet, said outlet, and said valve seat; a retainer mounted atop said base, said retainer having an aperture for receiving said adjuster; and a cover fixing said adjuster for rotation therewith such that deflection of said resilient diaphragm is capable of being adjusted by rotation of said cover.