Dampening resonance in a flow regulator

A resonance dampened compressible fluid flow regulator comprising:

• (a) housing structure including a pressure responsive member dividing said structure into a first fluid pressure chamber on one side of said member and a second fluid pressure chamber on the opposite side of said member said pressure responsive member including a piston moveable therewith, said housing structure including a fluid pressure signal port in said first chamber said signal port adapted for connection to a fluid pressure signal source;
• said housing structure including a bleed port communicating said first chamber with the ambient atmosphere;
• (b) a bleed valve selectively operable for controlling flow through said bleed port;
• (c) said housing structure including a fluid flow inlet port communicating with said second chamber, said inlet port adapted for connection to a source of fluid flow to be regulated;
• (d) means for controlling flow from said second chamber through an exhaust port in said second chamber responsive to the pressure difference between said first and second chamber, said means including a valve obturator connected to said pressure responsive member for movement therewith and a valve seating surface;
• and,
• (e) an inertial mass and resilient means for attaching said mass to at least a portion of said pressure responsive member for limited relative movement with respect to said piston, wherein said resilient means for attaching is operative to resiliently resist said limited relative movement wherein said inertial mass is operative to mass dampen the vibration of said pressure responsive member in response to pressure pulses and rarefactions experienced in said second chamber independently of the position of said pressure responsive member chamber.