[Cheng Fluid Systems, Inc. - Cheng Fluid Systems, is dedicated to solving our customer's fluid flow problems, with over 25 years of engineering expertise, along with our proven flow conditioning products, the CRV®(Cheng Rotation Vane) & LAD® (Large Angle Diffuser). Due to their unique and fundamental nature, the CRV® & LAD® have a significant market and a wide range of applications for example large industrial and utility complexes, such as chemical processing, power plants and water dis The Cheng Rotation Vane (CRV®) is a Flow Conditioner Technology, which consists of a set of stationary vanes in a cylindrical body to be placed immediately upstream of an elbow or tee in a piping system. Eliminates elbow induced turbulence. ]