Power Steering Pump Flow Control Valve WeVe Developed A New Adjustable Flow Control Valve For The Modern Type Ii Gm Power Steering Pump. It Allows You To Adjust The Sensitivity, Or Touchiness The Valve Has 10 Positions That Adjust The Flow .25-3.5 Gallons Per Minute. This Adjusts The Static Pressure From 100-425psi, By Adjusting To A Slower Flow Rate The Amount Of Initial Power Assist Can Be Reduced Making A More Natural Feel At The Steering Wheel. A Higher Flow Rate Will Make The Power Assist Start With A Very Light Steering Effort. The Total Power Assist Remains Unchanged. The Valve Only Affects The Way The Power Steering First Comes Into Action. For Example If Parking Requires 3 Lb/Ft Of Torque To Turn Steering Wheel, It Will Still Require The Same 3 Lb/Ft Regardless Of Where The Adjustment Is Set. Part Number (90400)