Automatic fluid flow regulator

摘要: A fluid flow regulating device for use in handling systems which is capable of maintaining substantially constant rates over a wide range variations system pressure. The includes housing having disposed therein conduit whose lateral wall one or more apertures predetermined configuration. piston within the and axially displaceable, response to pressure differentials, throughout portion wherein are located. spring mechanism specified non-linear coefficient stiffness employed yieldably resist downstream displacement piston. aperture together form variable area passageway through all must pass. pneumatic, thermometric may also be displace changes temperature independent variations. Finally, arranged so that its sole source energy derived from air being regulated, thus eliminating any need an external source.