InFlexFlow Control Valve (FCV™)
U.S. Patents 5,316,081 and 6,273,195

For overview product and application information, click here to download our most recent Catalog 6 (PDF).
Its pages 22-25 provide an introduction to our FCV, technical drawings, and specification worksheets.

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The InFlex™  Flow Control Valve (FCV) is a fluid-actuated valve that permits pumping water to the surface or regulating the flow of water from the surface into the well, while using the same column pipe and maintaining a column of water in it at all times.  The InFlex FCV may be used in conjunction with a submersible pump or a vertical turbine pump for  Aquifer Storage and Recovery (ASR) and Aquifer Thermal Energy Storage (ATES) applications.  Advantages of the InFlex FCV include:

Impressive Performance
Testing at the factory and field use of the InFlex FCV confirm that it effectively adjusts and holds desired injection rates.  Because of its unique design features, including no sliding seals to fail, it is the most durable and versatile valve on the market.

Cavitation-Free Design
The key to the successful control of the injection water through this valve is its long, adjustable, annular-gap flow path through a series of circular annular orifices.  This flow path provides non-cavitating head loss that is easily controlled by changing the gap between the annular orifices and the rubber element.  Stainless steel channels are a part of the adjustable flow system and stabilize the rubber element as it is pushed down and stretched by the inflation liquid.

Impossible to Sand-lock
By design, there is no place for sand to collect; therefore, the InFlex
FCV cannot sand lock. It is impossible for the rubber element to "stick" at any time during pumping or injection, as there are no sliding surfaces to become "stuck" due to sand-locking.

Wear-resistant
The InFlex
FCV is extremely wear-resistant due to its rubber control element, similar to slurry pumps which are rubber lined to reduce wear.  Due to its low-velocity, cavitation-free flow, the InFlex FCV resists sand and silt far better than conventional valve designs.  Conventional valves have all of their pressure loss (at high velocities) across only one orifice stage, leading to wear from suspended solids and erosion with cavitation.

Ask about our 5-year limited warranty
The InFlex
FCV utilizes a reinforced rubber element, the only “moving” part.  This element is an adaptation of the element that has been successfully used in our inflatable downhole packers in demanding open-hole conditions for over two decades.  All metal parts of the valve are constructed of stainless steel.  Other more corrosion-resistant alloys are optional for aggressive environments.

Wide Range of Injection Capacities
Our InFlex
FCV offers injection capacities of 10,000 gpm and higher with driving heads of 20 to 3,000 feet.  All of the valves are infinitely adjustable from drip-tight shut-off to maximum flow.  Furthermore, their maximum flow rate can be limited by using two control lines.

Casing Size

Valve OD

Column Pipe

Flow Rate

nominal
[inch]
maximum
[inch]
nominal
[inch]
typical
[gpm]
min  -  max
[gpm]

5

          4

2

   100

 0  -     300

6

          5

3

   200

 0  -     600

8

          6-5/8

4 or 5

   400

0  -    1,200 

10

          8-5/8

6

   800

0  -    2,000 

12

        10-3/4

8

1,400 

0  -    3,000

16

        12-3/4

10

2,000 

0  -    4,000

20

        16

12

3,000 

0  -    6,000

22

        18

14

3,500 

0  -    7,000

24

        20

16

4,000 

0  -    8,000

28
        24
18 or 20 5,000
0  -  10,000
Flow Rate Discussion:          Flow Rate [gpm] = CV × Squareroot(Head [feet])
The flow rate through a given valve is proportional to the square root of the driving head. The driving head is the sum of the injection pipeline pressure in feet of water plus the distance down to the injection water level in the well minus the head loss in the column pipe.  Baski customizes the flow coefficient (CV) range of each valve to the intended application (its column pipe size and driving head). Flow control results from changing this CV between 0 (closed) and the valve’s maximum (open).

For more information on aquifer storage and recovery (ASR), please refer to
Groundwater Recharge and Wells - A Guide to Aquifer Storage Recovery by R. David G. Pyne

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