The Meritor Die Cast Zinc Material Spring Brake Control Valve a premium quality product engineered, manufactured, and assembled in the U.S. With a strong commitment to quality and excellence, our valves are produced using only the finest materials, primarily a zinc alloy, to ensure maximum durability and longevity. At Meritor, we believe that quality control is paramount, which is why we conduct 100 percent pneumatic and submersion testing on all our products. Our in-house die cast and machine shop facilities give us complete control over the manufacturing process, ensuring that every valve that leaves our facility meets the highest industry standards. Our valves are designed to save you time and money with plug units that are easy to install and use. Plus, with our 2-year warranty. FleetPride is your First Click in Heavy Duty®.