Patent ID: 7575020
Filing Date: 2009-08-18
Classification: G05D,Y10T

Abstract:
1. A pressure regulator comprising: a main body defining a valve seat and a flow path, the flow path having an inlet and an outlet; a valve assembly disposed in the main body along the flow path and including a first head and a second head, the first head being movable with respect to and sealable with the second head, the second head being movable with respect to and sealable with the valve seat, wherein the first head facilitates flow of a fluid in a first range of flow rates and the first head and the second head cooperate to facilitate flow of the fluid in a second range of flow rates; a sealing member disposed in the main body and coupled to the valve assembly, wherein the sealing member slideably engages a portion of the main body to form a seal therebetween; a first spring disposed between the main body and the sealing member; and a second spring disposed between the main body and the valve assembly, wherein the second spring is disposed between the main body and the second head.