Finally, we also control the standard of each component and each step in the manufacturing process. A devoted team of purchasers, engineers, quality inspectors and machine irrigation gearbox operators works night and day to ensure each component meets the stringent Valley quality requirements. Because our suppliers are situated in america, we can certainly perform random inspections of their facilities to make sure they are meeting our quality specifications. All major components are also machined by Valley, providing a second quality level control. Your final inspection is conducted by screening each gearbox before it is shipped. And, to further make sure Valley quality, randomly selected gearboxes are life-tested in our gearbox testing laboratory.
But, even the best gear style and components won’t help if the gearbox isn’t sealed from the elements. That’s why Valley uses a patented six-barrier input and nine-barrier output seal to keep oil in and complications out. To compensate for this longer shaft, unique wheels are used that truly move the guts of the tire nearer to the gearbox output bearing compared to the industry regular, reducing the strain on the gearbox.
Valley also uses U.S.-made, case-hardened bearings made from ultra-pure steel rather than through-hardened Chinese bearings utilized by others. Case-hardening provides superior wear characteristics while maintaining the inner toughness of the core material. Consequently, Valley bearings possess a 40 percent higher load rating.
The Valley gearbox also offers a 52:1 gear ratio. This implies the gearbox uses 4 percent less energy to move the device through the field, but, moreover, the design has a completely recessed tooth actions. With a fully recessed design, the gears maintain lubrication oil between the gears longer, reducing friction for improved load capability and longer life.