The Hadley Height Control Valve is designed to provide superior lubrication and consistent performance in a variety of applications. The valve features a universal design that allows it to fit most performance configurations, and its model rate flow rate provides a perfect balance of reliability and repeatability. The valve is constructed with a durable O-ring seal that ensures a tight seal throughout its life. Its superior lubricants provide reliable and consistent lubrication to protect the valve from wear and tear. FleetPride is your First Click in Heavy Duty®.