Product Details: Equip your vehicle with the replacement parts it needs to be Ready for the Road Ahead™, with the Haldex 1/4" NPT Pressure Protection Valve that is suitable for a wide range of pneumatic operations. This valve is designed to regulate the air supply in your vehicle's hydraulic system, and ensure optimum brake system performance while preventing accessory failure. Manufactured with strict OE specifications to meet the demands of heavy duty applications. FleetPride is your First Click in Heavy Duty®.