Ensure your semi is Ready for the Road Ahead with enhanced control of its braking system, with the Bendix MV-3 Series 3/8" Push to Connect Type Dash Control Valve. To help regulate how much brake pressure is applied to the wheels, this replacement valve controls the flow of air pressure to various parts of the brake system. Fashioned with a durable design to withstand extreme pressures and idle operations. FleetPride is your First Click in Heavy Duty .