Height Control Valve : HCV

450 Series - Hadley’s H00450 Series is a universal and versatile Non Dump valve for Tractor and Trailer applications. The valve is also utilized on a number of Class A RV applications. The valve has a moderate flow rate and the best reliability and repeatability in the industry. The valve has been in production for over 20 years and continues to be a best seller for Hadley.


The H00450CE was designed as a universal replacement valve. Fit most applications and replaces most competitive applications.

450 valves Include:  Two Levers, Two Brackets