Ensuring you are Ready for the Road Ahead , the OTR Push Pull Dash Control Valve is engineered to enhance vehicle performance, consisting of a valve body, plungers, and spools. These brake valves are engineered for easy installation due to being housed in a single body containing dual circuit supply through a double valve check. Receiving air supply protection from whichever service reservoir is at higher pressure, you will have the same form, fit, and function as OEMs and major brands for your truck. FleetPride is your First Click in Heavy Duty .