Outfit your semi to be Ready for the Road Ahead™ with enhanced air pressure control, with the Haldex Piston Type Air Compressor Governor Valve. Thanks to its sophisticated design, this replacement valve is able to help regulate the air pressure levels in a pneumatic system to guarantee safe operation within pre-determined limits. Crafted with durable materials to endure extreme pressures while making adjustments as needed. FleetPride is your First Click in Heavy Duty®.