Patent ID: 9709994
Date: 2017-07-18
CPC Classifications: G05D,Y10T

Claim:
1. A device for providing an output fluid at a regulated output pressure, the device comprising: a pressure control unit controlled via a pilot control pressure and comprising an inlet chamber for an input fluid having an input pressure, an outlet chamber for the output fluid at the regulated output pressure and a first valve unit configured to act between the inlet chamber and the outlet chamber; a control tube; and a pilot control unit that provides the pilot control pressure, wherein the pressure control unit further comprises a first diaphragm onto which the pilot control pressure acts and a second diaphragm, mechanically coupled to the first diaphragm, onto which the output fluid having the output pressure acts; wherein at least the second diaphragm acts mechanically on the first valve unit; wherein the first valve unit comprises a closing piston disposed in the outlet chamber and a valve seat configured to interact with the closing piston and wherein the valve seat fluidically connects the inlet chamber to the outlet chamber; wherein the control tube extends away from the second diaphragm, in a direction of the first valve unit for a longitudinal distance at least equal to a longitudinal distance between the second diaphragm and the first valve unit; wherein the control tube is configured to be longitudinally displaceable for opening the first valve unit; and wherein the control tube establishes a permanent fluidic connection between the outlet chamber and a coupling chamber arranged in the pressure control unit adjacent to the second diaphragm.