Patent ID: 6595231
Filing Date: 2003-07-22
Classification: G05D,Y10T

Abstract:
A pressure regulator device for regulating the pressure of a gas stream, the pressure regulator device comprising:a) a housing; b) a diaphragm in the housing, the diaphragm having one and another sides; c) a pressure regulating chamber in the housing, the pressure regulating chamber comprising a first inlet opening to input the gas stream and a first outlet opening to output a regulated gas stream, wherein at least a part of a wall of the pressure regulating chamber comprises the diaphragm and wherein the diaphragm is operable to completely or partially close one or both of the first inlet and first outlet openings; d) a pressure control chamber in the housing to subject the diaphragm, on the side of the diaphragm remote from the pressure regulating chamber, to an adjustable prestressing force, the pressure control chamber having a second inlet opening to input a pressure control gas and a second outlet opening to output the pressure-control gas; e) a displaceable closure member in said first inlet or said first outlet opening and, optionally a spring to position the closure member, the closure member being connected to the diaphragm so that the closure member position depends upon the displacement of the diaphragm wherein the closure member can be pulled by the diaphragm toward the control chamber, on the other side of the diaphragm from the closure member, to completely or partially close the respective first inlet or first outlet opening; and f) a remotely controllable shutoff valve for the second outlet opening enabling the pressure in the pressure control chamber to be set to a desired pressure to apply the prestressing force to the diaphragm.