PUMP CONNECTORS

CRV Flex®

Reduces turbulence at the pump...measurably improves pump performance

How it works

The CRV® Technology consists of a specially designed set of stationary vanes placed upstream of an elbow. The CRV imparts to the fluid a gyroscopic motion, which counteracts the elbow induced motion, enabling the fluid to negotiate the turn uniformly and exit with a flat velocity profile.

The CRV® Flex offers:

• Guaranteed measurable improved pump performance
• Reduced pump vibration and wear, maximizing pump operating life and helping reduce pump maintenance
• Increased pump efficiency
• Increased flow rate

Suction Diffuser vs. the Energy efficient CRV FLEX
Pressure drop is the resistance to flow as a liquid moves thru a pipe. It is caused by the viscous shear within the liquid and turbulence along pipe walls. The more the pressure drop the more energy is consumed to overcome it.

The CRV Flex is far more efficient compared to a suction diffuser!

Pressure Drop (Equivalent Feet of Pipe)

PIPE SIZE	SUCTION DIFFUSER (TYPICAL)	CRV FLEX*	LONG R ELBOW	SHORT R ELBOW
2-1/2	17 ft	2.38 ft	3.29 ft	6.17
3-1/4	26	2.45	4.09	7.67
4-1/4	31	2.58	5.37	10.10
6-1/4	45	3.33	8.09	15.2
8-3/4	78	3.73	10.60	20.0

*Includes the pressure drop through the Flex!!

Double Suction Centrifugal Pump Test Results
Flow rate, head and efficiency are improved. The pumps power requirements are reduced.

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Watch Video

Picture of dye flow
with and without CRV

For large industrial applications
please visit Cheng Fluid Systems website.