PUMP CONNECTORS

Vane Flex Flow Straightening Pump Connector

Straighten flow, reduce turbulence in a fraction of the space

Go to Vane Flex size charts and 3D CAD drawings

New Vane Flex™ dramatically reduces pump turbulence and improves flow of engineered piping system.

Piping engineers now have a more compact, efficient solution to reduce turbulence and straighten flow. The new Vane Flex™ pump connector not only exceeds flow-straightening values recommended by all major manufacturers of balancing-type valves, it does it in a fraction of space.

How does the Vane Flex work?
Combining hydrodynamic-shaped vanes with a flexible pump connector, the Vane Flex maintains the full range of movement of a standard flexible connector, yet, at the same time and in the same space as a standard connector, provides better flow-straightening than a length of pipe equivalent to 5-to-10 diameters.

In addition, the Vane Flex provides the same stress relief and vibration in the same face-to-face as a standard pump connector.

Why is turbulence so damaging?
Valve flutter & poor balancing

Turbulence causes disc flutter, which causes wear, which is why older valves wont close completely. Useful life is reduced, and most importantly, results in poor balancing. A spool piece of 5 to 10 diameters of pipe after the pump/before the valve was the universal fix suggested to minimize turbulence.

How can a Vane Flex be less expensive than a length of pipe?
First, 5 to 10 diameters length of pipe is valuable space. Secondly, the cost of the pipe and the cost of flanges and labor to weld and install this recommended length is already more expensive than the Vane Flex.

But most important...

What s specified versus what is actually installed in the field doesn't always match, resulting in difficulty in balancing the system and premature valve wear.

Milwaukee School of Engineering

Vane flex vs. 10 pipe diameters — Independent testing at the Milwaukee School of Engineering
Visual Flow Tests conducted in the Hydraulics lab at the Milwaukee School of Engineering compared a length of pipe equivalent to 10 diameters, a standard flexible connector, and the Vane Flex. The results were dramatic.

10 pipe diameters: The testing showed there is still significant turbulence even at the recommended maximum 10 pipe diameters from the pumps.

Standard pump connector: Turbulence out of a pump connector that is connected directly to a pump is dramatically worse and would create difficulty in balancing the system.

Vane Flex pump connector: The testing showed Vane Flex exhibited a marked reduction in flow turbulence, far exceeding even the 10 pipe diameters requested by every system balancing valve maker. This equates to a positive impact on the performance of the engineered pipe system.

Click the links below to jump to a particular product info table.

Vane Flex with 150# Plate Flange X Groove End and L.R. 90 Degree Elbow

Model No. Size A* B* Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D
Drawing
VF90FG0200 2 14.25 3.25 .375" .125" 455 Revit/CAD
VF90FG0250 2.5 15 4 .375" .125" 345 Revit/CAD
VF90FG0300 3 15.75 4.75 .375" .125" 289 Revit/CAD
VF90FG0400 4 17.25 6.25 .375" .125" 300 Revit/CAD
VF90FG0500 5 20.75 7.75 .375" .125" 220 Revit/CAD
VF90FG0600 6 22.25 9.25 .375" .125" 200 Revit/CAD
VF90FG0800 8 26.75 12.25 .375" .125" 190 Revit/CAD
VF90FG1000 10 30.75 15.25 .375" .125" 150 Revit/CAD
VF90FG1200 12 34.75 18.25 .375" .125" 125 Revit/CAD
VF90FG1400 14 37.75 21.25 .375" .125" 105 Revit/CAD

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Vane Flex with 150# Plate Flanges and 90 Degree Reducing Elbow

Model No. Size A* B* Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VF90R0225 2 x 2.5 12.25 4 .375" .125" 345 Revit/CAD
VF90R0203 2 x 3 13 4.75 .375" .125" 289 Revit/CAD
VF90R2503 2.5 x 3 13 4.75 .375" .125" 289 Revit/CAD
VF90R0204 2 x 4 14.5 6.25 .375" .125" 300 Revit/CAD
VF90R2504 2.5 x 4 14.5 6.25 .375" .125" 300 Revit/CAD
VF90R0304 3 x 4 14.5 6.25 .375" .125" 300 Revit/CAD
VF90R2505 2.5 x 5 18 7.75 .375" .125" 220 Revit/CAD
VF90R0305 3 x 5 18 7.75 .375" .125" 220 Revit/CAD
VF90R0405 4 x 5 18 7.75 .375" .125" 220 Revit/CAD
VF90R0306 3 x 6 19.5 9.25 .375" .125" 200 Revit/CAD
VF90R0406 4 x 6 19.5 9.25 .375" .125" 200 Revit/CAD
VF90R0506 5 x 6 19.5 9.25 .375" .125" 200 Revit/CAD
VF90R0408 4 x 8 23.25 12.25 .375" .125" 190 Revit/CAD
VF90R0508 5 x 8 23.25 12.25 .375" .125" 190 Revit/CAD
VF90R0608 6 x 8 23.25 12.25 .375" .125" 190 Revit/CAD
VF90R0610 6 x 10 27.25 15.25 .375" .125" 150 Revit/CAD
VF90R0812 8 x 10 27.25 15.25 .375" .125" 150 Revit/CAD
VF90R1012 10 x 12 31.25 18.25 .375" .125" 125 Revit/CAD

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Vane Flex with 150# Plate Flange X Groove End and 90 Degree Reducing Elbow

Model No. Size A* B* Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VF90RFG0225 2 x 2.5 12.25 4 .375" .125" 345 Revit/CAD
VF90RFG0203 2 x 3 15.75 4.75 .375" .125" 289 Revit/CAD
VF90RFG2503 2.5 x 3 15.75 4.75 .375" .125" 289 Revit/CAD
VF90RFG0204 2 x 4 17.25 6.25 .375" .125" 300 Revit/CAD
VF90RFG2504 2.5 x 4 17.25 6.25 .375" .125" 300 Revit/CAD
VF90RFG0304 3 x 4 17.25 6.25 .375" .125" 300 Revit/CAD
VF90RFG2505 2.5 x 5 20.75 7.75 .375" .125" 220 Revit/CAD
VF90RFG0305 3 x 5 20.75 7.75 .375" .125" 220 Revit/CAD
VF90RFG0405 4 x 5 20.75 7.75 .375" .125" 220 Revit/CAD
VF90RFG0306 3 x 6 22.25 9.25 .375" .125" 200 Revit/CAD
VF90RFG0406 4 x 6 22.25 9.25 .375" .125" 200 Revit/CAD
VF90RFG0506 5 x 6 22.25 9.25 .375" .125" 200 Revit/CAD
VF90RFG0408 4 x 8 26.75 12.25 .375" .125" 190 Revit/CAD
VF90RFG0508 5 x 8 26.75 12.25 .375" .125" 190 Revit/CAD
VF90RFG0608 6 x 8 26.75 12.25 .375" .125" 190 Revit/CAD
VF90RFG0610 6 x 10 30.75 15.25 .375" .125" 150 Revit/CAD
VF90RFG0810 8 x 10 30.75 15.25 .375" .125" 150 Revit/CAD
VF90RFG1012 10 x 12 34.75 18.25 .375" .125" 125 Revit/CAD

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Vane Flex with 150# Plate Flanges

Model No. Size OAL Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VF0200 2 9 .375" .125" 455 Revit/CAD
VF0250 2.5 9 .375" .125" 345 Revit/CAD
VF0300 3 9 .375" .125" 289 Revit/CAD
VF0400 4 9 .375" .125" 300 Revit/CAD
VF0500 5 11 .375" .125" 220 Revit/CAD
VF0600 6 11 .375" .125" 200 Revit/CAD
VF0800 8 12 .375" .125" 190 Revit/CAD
VF1000 10 13 .375" .125" 150 Revit/CAD
VF1200 12 14 .375" .125" 125 Revit/CAD
VF1400 14 14 .375" .125" 105 Revit/CAD

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Vane Flex with 150# Plate Flanges and Long Radius 90 Degree Elbow

Model No. Size A* B* Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VF900200 2 11.5 3.25 .375" .125" 455 Revit/CAD
VF900250 2.5 12.25 4 .375" .125" 345 Revit/CAD
VF900300 3 13 4.75 .375" .125" 289 Revit/CAD
VF900400 4 14.5 6.25 .375" .125" 300 Revit/CAD
VF900500 5 18 7.75 .375" .125" 220 Revit/CAD
VF900600 6 19.5 9.25 .375" .125" 200 Revit/CAD
VF900800 8 23.25 12.25 .375" .125" 190 Revit/CAD
VF901000 10 27.25 15.25 .375" .125" 150 Revit/CAD
VF901200 12 31.25 18.25 .375" .125" 125 Revit/CAD
VF901400 14 34.25 21.25 .375" .125" 105 Revit/CAD

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Vane Flex with 150# Plate Flange X Groove End

Model No. Size OAL Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VFFG0200 2 11.75 .375" .125" 455 Revit/CAD
VFFG0250 2.5 11.75 .375" .125" 345 Revit/CAD
VFFG0300 3 11.75 .375" .125" 289 Revit/CAD
VFFG0400 4 11.75 .375" .125" 300 Revit/CAD
VFFG0500 5 13.50 .375" .125" 220 Revit/CAD
VFFG0600 6 13.50 .375" .125" 200 Revit/CAD
VFFG0800 8 15.25 .375" .125" 190 Revit/CAD
VFFG1000 10 16.25 .375" .125" 150 Revit/CAD
VFFG1200 12 17.25 .375" .125" 125 Revit/CAD
VFFG1400 14 17.25 .375" .125" 105 Revit/CAD

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Vane Flex with 150# Plate Flanges and Concentric Reducer

Model No. Size OAL Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VFR0225 2 x 2.5 12.25 .375" .125" 345 Revit/CAD
VFR0203 2 x 3 12.25 .375" .125" 289 Revit/CAD
VFR2503 2.5 x 3 12.25 .375" .125" 289 Revit/CAD
VFR0204 2 x 4 12.75 .375" .125" 300 Revit/CAD
VFR2504 2.5 x 4 12.75 .375" .125" 300 Revit/CAD
VFR0304 3 x 4 12.75 .375" .125" 300 Revit/CAD
VFR2505 2.5 x 5 15.75 .375" .125" 220 Revit/CAD
VFR0305 3 x 5 15.75 .375" .125" 220 Revit/CAD
VFR0405 4 x 5 15.75 .375" .125" 220 Revit/CAD
VFR0306 3 x 6 16.25 .375" .125" 200 Revit/CAD
VFR0406 4 x 6 16.25 .375" .125" 200 Revit/CAD
VFR0506 5 x 6 16.25 .375" .125" 200 Revit/CAD
VFR0408 4 x 8 17.50 .375" .125" 190 Revit/CAD
VFR0508 5 x 8 17.50 .375" .125" 190 Revit/CAD
VFR0608 6 x 8 17.50 .375" .125" 190 Revit/CAD
VFR0610 6 x 10 19.50 .375" .125" 150 Revit/CAD
VFR0810 8 x 10 19.50 .375" .125" 150 Revit/CAD
VFR1012 10 x 12 21.50 .375" .125" 125 Revit/CAD

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Vane Flex with 150# Plate Flange X Groove End and Concentric Reducer

Model No. Size OAL Permanent
Offset
Intermittent
Offset
Pressure
at 70°F
3D Drawing
VFRFG0225 2 x 2.5 15 .375" .125" 345 Revit/CAD
VFRFG0203 2 x 3 15 .375" .125" 289 Revit/CAD
VFRFG2503 2.5 x 3 15 .375" .125" 289 Revit/CAD
VFRFG0204 2 x 4 15.5 .375" .125" 300 Revit/CAD
VFRFG2504 2.5 x 4 15.5 .375" .125" 300 Revit/CAD
VFRFG0304 3 x 4 15.5 .375" .125" 300 Revit/CAD
VFRFG2505 2.5 x 5 18.5 .375" .125" 220 Revit/CAD
VFRFG0305 3 x 5 18.5 .375" .125" 220 Revit/CAD
VFRFG0405 4 x 5 18.5 .375" .125" 220 Revit/CAD
VFRFG0306 3 x 6 19 .375" .125" 200 Revit/CAD
VFRFG0406 4 x 6 19 .375" .125" 200 Revit/CAD
VFRFG0506 5 x 6 19 .375" .125" 200 Revit/CAD
VFRFG0408 4 x 8 21 .375" .125" 190 Revit/CAD
VFRFG0508 5 x 8 21 .375" .125" 190 Revit/CAD
VFRFG0608 6 x 8 21 .375" .125" 190 Revit/CAD
VFRFG0610 6 x 10 23 .375" .125" 150 Revit/CAD
VFRFG0810 8 x 10 23 .375" .125" 150 Revit/CAD
VFRFG1012 10 x 12 25 .375" .125" 125 Revit/CAD

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Vane Flex

Click on image for larger view.

Vane Flex
Watch Video

Vane Flex Test Video
Video of MSOE Visual Flow Testing

Vane Flex Technical

MSOE Turbulence Testing
10 Pipe Diameters
Turbulence directly out of pump
Velocity 7 ft/sec
Ribbons 10 pipe diameters long
MSOE Turbulence Testing

Vane Flex
Flow straightened in
a fraction of the space
Vane Flex Testing