Product Details: The Hadley 7" / 8" Adjustable Height Control Valve Kit with Zero Pressure Dump Valve is the perfect solution for any performance application. This universal design fits most applications and provides a reliable and repeatable model rate flow rate. The superior lubricants provide consistent lubrication to protect the valve from wear and tear, while the proven O-ring seal integrity ensures a long-lasting and reliable performance. With its adjustable height control and zero pressure dump valve, this kit is the perfect choice for any performance application. FleetPride is your First Click in Heavy Duty®.