The Haldex 1/4" NPT Immediate Response Height Control Valve is designed to maintain the ride height of your vehicle's suspension. This non-time delay valve features a 1/4" NPT port and can be used to inflate or deflate air springs to ensure a comfortable ride. The vertical adjustment delivery ports (2) 3/8" PTCA make it easy to adjust the valve to the desired height. This high-quality valve is designed to provide reliable performance and is perfect for any vehicle suspension system. FleetPride is your First Click in Heavy Duty®.