The Crossover ball joint is a new dredge ball joint that provides optimal flow performance, its manufacturer VOSTA LMG said. Through computational fluid dynamics (CFD) the frictional losses and turbulence have been reduced. Conventional dredge ball joints act like a ball valve when tilted, causing the flow area to reduce and frictional losses to increase. The patented Crossover design incorporates two wear liners which are shaped to provide full flow area in any tilted position.