Back pressure regulator

Details Back pressure regulator Back pressure regulator

G - Physics

05

D

137/44

G05D 16/00 (2006.01) G05D 16/06 (2006.01)

Patent

CA 1138741

ABSTRACT OF THE DISCLOSURE A back pressure regulator for regulating fluid flow includes a casing the interior of which is divided into a control chamber and a flow chamber. A fluid, for example a gas, is introduced into the control chamber at a pressure equal to the control pressure, such pressure being adjustable by a piston slidably mounted in the control chamber. Fluid, under the pressure to be controlled, is introduced against the other side of the diaphragm. At the same time, fluid, the pressure of which is to be controlled, passes through a valve in the casing, the valve being slidably mounted in the flow chamber and connected to the diaphragm for movement therewith. Changes in pressure on the flow chamber side of the diaphragm result in movement of the diaphragm to open or close the valve, whereby the pressure of fluid passing through the valve is maintained constant.

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