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CRV Flow Conditioner Creates Uniform Laminar Flow into Pump Suction and Downstream Equipment

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Published on Oct 11, 2012

The Cheng Rotation Vane CRV flow conditioner consists of a set of stationary vanes in a cylindrical body which is placed immediately upstream of an elbow or tee in a piping system. The CRV eliminates elbow induced turbulence which negatively impacts the performance of pumps, compressors, control valves, flow meters, and other equipment. The CRV inputs to the flow a counteracting gyroscopic motion to the resultant elbow induced gyroscopic motion, and enables the fluid to negotiate the turn through the elbow and then exit the elbow with a flat velocity profile. This results in an even distribution of process fluid through any cross-section of the elbow and transforms the elbow into the equivalent of a straight length of pipe, and there is no additional pressure drop with the use of a CRV flow conditioner.

The CRV flow conditioner creates a flat velocity profile through elbows, pipe turns and concentric expansions/reductions in front of process machinery and equipment. The benefits are lower head loss, elimination of cavitation, improved pumping efficiency and flow meter accuracy, increased process equipment throughput and yield lower maintenance requirements, ease of retrofit and lower overall operating costs.

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