FLUID FLOW CONTROLLER HAVING AXIAL NEEDLE VALVE FOR ADJUSTING THE FLOW RATE

摘要

A fluid flow regulator in which fluid is passed through an impeller chamber having a pressure differential-operated impeller piston for monitoring changing inlet and outlet fluid pressures to maintain a constant fluid flow rate. A needle valve mounted on the body at one end of the impeller chamber engages an orifice opening to precisely change the fluid flow rate.