The Haldex 7" Adjustable Precision Response Plus Height Control Valve is the perfect choice for any truck, tractor, trailer, industrial or recreational vehicle air suspension system. This valve is designed with ceramic seal technology for remarkable durability and reliability, and is manufactured to meet the highest quality standards. It is fitted with the industry's tightest dead band to eliminate ride height variation, and features a 7" vertical adjustment with two 1/4" NPT delivery ports. FleetPride is your First Click in Heavy Duty®.