H2flow FlowVis FV-J-R-15 User manual

Instruction Manual
English
FlowVis®
Flow Meter

1.Description .....................................................................................3
2. Concept...........................................................................................4
3. Resources .......................................................................................4
4. Service Repair Kit...........................................................................5
5. Markings, Features, Warnings & Safety .....................................5
5.1 NSF 50 ...............................................................................................5
5.2 Valve Body Feature.........................................................................6
5.3 Tygon Tubing ....................................................................................6
5.4 Warnings & Safety ...........................................................................7
5.5 Indoor / Outdoor Rating.................................................................7
6. Models & Specifications................................................................8
7. Installation Locations ....................................................................10
7.1 Systems using Salt Generator Cells ...........................................10
7.2 Systems using Erosion Chlorine Feeders.................................11
8. Installation ......................................................................................12
8.1 General Installation Guidance......................................................12
8.2 Certified NSF 50 Accuracy and Assoc. pipe Configs. ...........13
8.3 Pipe Configs. other than those used by NSF for Testing......14
8.4 NSF 50 Accuracy Levels ...............................................................14
8.5 Installation of saddle-clamp style models.................................15
8.6 Installation of Union-style models...............................................16
8.7 Tightening of Lid Screws...............................................................18
9. Operation........................................................................................19
9.1 Reading the Flow Rate...................................................................19
9.2 Reading the Velocity Rate.............................................................20
10. Head Loss Data..............................................................................21
11. Dimensions.....................................................................................22
12. Maintenance...................................................................................25
13. Technical Data................................................................................26
13.1 Material Data Sheet (MSDS) .........................................................26
13.2 Operational Data.............................................................................28
13.3 Straight Pipe Requirements..........................................................29
14. Warranty..........................................................................................30
contents

H2flow Controls FlowVis® 3
Description
1. description
Fig.1.0: FV-15; FV-2; FV-2-U; FV-25;
FV-3; FV-4; FV-6 and FV-8
Fig.1.1: FlowVis®
retro t model
FlowVis® is a revolutionary, patented
solution for accurate and reliable  ow
and velocity rate measurement in fresh
water applications such as swimming
pools, spas, fountains, water features,
irrigation systems, ground water
applications, well water and solar
systems. A FlowVis®model also exists
for Flotation Tanks and where the
Speci c Gravity has been raised to 1.25
by adding Epsom Salts.
Using a design that is based on ‘mass
 ow’ principles, FlowVis®  ow meters
provide many bene ts that include:
• Ease of installation with zero to
minimal straight pipe
• Installation  exibility that allows
orientation in any position, e.g.,
horizontal, vertical or even upside-
down
• Long life without sticking  oats or
paddle wheels
• Combined Flow Meter and Check
Valve for models FV-15, FV-2, FV-
25, FV-C, all retro t models, and
all metric and DN equivalents
• User upgradeable to include
Digital functionality (FV-D)

H2flow Controls FlowVis®
4Concept / Resources
2. concept
As  ow increases, the  apper moves forward toward its fully open position. The
 apper’s angular position is directly related to the  ow rate through the valve body /
tee / pipe. A calibrated scale on the valve’s lid provides a highly accurate reading of the
 ow rate and velocity.
3. resources
Thank you for purchasing the H2 ow FlowVis®  ow meter. If
you would like to  nd additional product resources, including
tech tip sheets, brochures, videos, and materials in other
languages, please visit our website at www.h2ow.net or scan
the QR Code on this page.


Fig.1.2

H2flow Controls FlowVis® 5
Service Repair Kit / Markings, Features...
4. service repair kit
Service repair kits are available for all models.
FV-SK for all 1.5”, 2”, and 2.5” models, comprising:
• 1 x o-ring
• 1 x spring
• 1 x  apper and indicator arm (for all models except FV-C-S, and FV-C-Saline)
• 1 x pivot pin
FV-SK-CAR for all 3”, 4”, 6”, and 8” models, comprising:
• 1 x o-ring
• 1 x spring
• 1 x spring pulley pivot pin
• 1 x spring pulley to  apper pulley wire
For all other parts, please contact H2 ow at 888-635-0296 (toll-free) or
([phone] (International).
5. markings, features, warnings & safety
5.1 NSF 50
Models certi ed to NSF 50 will display the mark as shown in Fig.1.3.
Fig.1.3

H2flow Controls FlowVis®
6Markings, Features, Warnings & Safety
This feature has no functionality relating
to the operation of the FlowVis and is
simply provided as an attribute to be
able to plumb in a drain down pipe and
valve. A typical use for this might be a
roof mounted solar system. Under no
circumstances should this hole be drilled
out when using the valve body with the
FlowVis, as doing so will invalidate the
product warranty.
5.2 Valve Body Feature
On the side of the valve body that is used for the 1.5”, 2”, and 2.5” models, you
may notice the feature shown in Fig.1.4. Note that models with valve bodies
produced a er mid-2022 as well as all models with tees and saddle clamps do
not possess this feature):
Fig.1.4
5.3 Tygon Tubing
For models FV-3, FV-3-L, FV-4, FV-4-L, FV-6, FV-6-L, FV-8 and FV-8-L, the
Tygon tubing feature (shown Fig.1.5 and Fig.1.6), is installed to assist with initial
air extraction from the FlowVis lid a er the pump is started. When installing
the lid assembly into the Tee (FV-3, FV-3-L, FV-4 or FV-4-L) or Saddle (FV-6,
FV-6-L, FV-8 or FV-8-L), care should be taken to ensure that the end of the
Tygon tubing is positioned downstream of the FlowVis, i.e., not tucked up inside
the FlowVis lid, Tee or Saddle. This feature creates a venturi e ect that will cause
a negative pressure at the end of the tubing, thereby expelling air from inside the
lid. For applications using a variable speed pump, it is advisable to initially run
the pump at the highest possible safe speed in order to extract any air in the lid.
Fig.1.5 Fig.1.6

H2flow Controls FlowVis® 7
Markings, Features, Warnings & Safety
5.4 Warnings & Safety
The Virginia Graeme Baker Pool & Spa Act
requires that all public swimming pools & spas
having a single main drain or multiple drains
that are 3 feet or less (center to center) from each
other be  tted with a backup anti-entrapment system. Such systems include,
but are not limited to, SVRS and Automatic Pump Shut O systems. Special
consideration must be made when installing a FlowVis® to such applications.
Several of these systems do not allow the use of Check Valves. It is the
responsibility of the installer to make sure that the requirements of the speci c
backup system in use are maintained.
For these applications, refer to model FV-C-S in the ‘Model & Speci cations’
section of this document..
VGBA WARNING
5.5 Indoor / Outdoor Rating
All FlowVis models are NSF 50 rated for indoor and outdoor use.

H2flow Controls FlowVis®
8Models & Specifications
Model
     
NSF 50
Certied

Complete
Retrot
1.5” 2” 2.5” 3” 4” 6” 8” 40 80
GPM
LPM
Safety
Saline
High Flow
Union
body
Valve
Tee
Saddle
clamp
GPM LPM
Jandy
Hay-
ward
Praher
FVJ-R-15 ● ● ● ●
N/A
10-90
N/A
FVJ-R ● ● ● ● ●10-110
FVH-R-15 ● ● ● ●10-90
FVH-R ● ● ● ● ●10-110
FVP-R-15 ● ● ● ●10-90
FVP-R ● ● ● ● ●10-110
FVJ-R-15-L ● ● ● ●
N/A
40-360
FVJ-R-L ● ● ● ● ●40-400
FVH-R-15-L ● ● ● ●40-360
FVH-R-L ● ● ● ● ●40-400
FVP-R-15-L ● ● ● ●40-360
FVP-R-L ● ● ● ● ●40-400
FV-15 ● ● ● ● ● ● 10-80 N/A
FV-15-L ● ● ● ● ● ● N/A 38-303
FV-2 ● ● ● ● ● ● 10-110 N/A
FV-2-L ● ● ● ● ● ● N/A 38-416
FV-25 ● ● ● ● ● ● 10-110 N/A
FV-25-L ● ● ● ● ● ● N/A 38-416
FV-3 ● ● ● ● ● ● 70-240 N/A
FV-3-40 ● ● ● ● ● ● 70-240 N/A
FV-3-L ● ● ● ● ● ● N/A 165-908
FV-4 ● ● ● ● ● ● 150-460 N/A
FV-4-L ● ● ● ● ● ● N/A 568-1740
FV-6 ● ● ● ● ● ● 300-1000 N/A
FV-6-L ● ● ● ● ● ● N/A 1136-3785
FV-8 ● ● ● ● ● ● 600-1800 N/A
FV-8-L ● ● ● ● ● ● N/A 2271-6814
FV-15-U ● ● ● ● ● ● ● 10-90 N/A
FV-2-U ● ● ● ● ● ● ● 10-110 N/A
FV-C-S ● ● ● ● ● ● 30-110 N/A
FV-C-S-L ● ● ● ● ● ● N/A 110-400
FV-C-Saline ● ● ● ●●●20-100 N/A
FV-C-L-Saline ● ● ● ● ● ● ● N/A 80-400
FV-C-HF-S ● ● ● ● ● ● 30-190 N/A
6. models & specifications
FlowVis® comprises several models; it is important that you check that the model you
are about to install is the correct one for your application.

H2flow Controls FlowVis® 9 Models & Specifications
Model
     
NSF 50
Certied

Complete
Retrot
1.5” 2” 2.5” 3” 4” 6” 8” 40 80
GPM
LPM
Safety
Saline
High Flow
Union
body
Valve
Tee
Saddle
clamp
GPM LPM
Jandy
Hay-
ward
Praher
FVJ-R-15 ● ● ● ●
N/A
10-90
N/A
FVJ-R ● ● ● ● ●10-110
FVH-R-15 ● ● ● ●10-90
FVH-R ● ● ● ● ●10-110
FVP-R-15 ● ● ● ●10-90
FVP-R ● ● ● ● ●10-110
FVJ-R-15-L ● ● ● ●
N/A
40-360
FVJ-R-L ● ● ● ● ●40-400
FVH-R-15-L ● ● ● ●40-360
FVH-R-L ● ● ● ● ●40-400
FVP-R-15-L ● ● ● ●40-360
FVP-R-L ● ● ● ● ●40-400
FV-15 ● ● ● ● ● ● 10-80 N/A
FV-15-L ● ● ● ● ● ● N/A 38-303
FV-2 ● ● ● ● ● ● 10-110 N/A
FV-2-L ● ● ● ● ● ● N/A 38-416
FV-25 ● ● ● ● ● ● 10-110 N/A
FV-25-L ● ● ● ● ● ● N/A 38-416
FV-3 ● ● ● ● ● ● 70-240 N/A
FV-3-40 ● ● ● ● ● ● 70-240 N/A
FV-3-L ● ● ● ● ● ● N/A 165-908
FV-4 ● ● ● ● ● ● 150-460 N/A
FV-4-L ● ● ● ● ● ● N/A 568-1740
FV-6 ● ● ● ● ● ● 300-1000 N/A
FV-6-L ● ● ● ● ● ● N/A 1136-3785
FV-8 ● ● ● ● ● ● 600-1800 N/A
FV-8-L ● ● ● ● ● ● N/A 2271-6814
FV-15-U ● ● ● ● ● ● ● 10-90 N/A
FV-2-U ● ● ● ● ● ● ● 10-110 N/A
FV-C-S ● ● ● ● ● ● 30-110 N/A
FV-C-S-L ● ● ● ● ● ● N/A 110-400
FV-C-Saline ● ● ● ●●●20-100 N/A
FV-C-L-Saline ● ● ● ● ● ● ● N/A 80-400
FV-C-HF-S ● ● ● ● ● ● 30-190 N/A
COMPATIBILITYNOTE:When selecting a ‘retrot’ model from the table above, it is important to select
the FlowVis® model designed for your particular valve body. Each manufacturer’s design has unique hydraulic
characteristics that requires a specic FlowVis® scale.
For metric equivalents, please refer to the metric version of this manual.

H2flow Controls FlowVis®
10 Installation Locations
7. installation locations
✓
✓
✓
✓
Filter Heater Salt Cell

1 = IDEAL
2 = GOOD
3 = ACCEPTABLE
4 = AVOID
✓
✓
X
X
7.1 Systems using Salt Generator Cells
Due to the fact that Salt Generator Cells have their electrical supply turned o
under low or low  ow conditions, there is virtually no possibility of damage
being caused to the FlowVis unit by these devices. Therefore, the primary
installation consideration is where will the unit provide the greatest bene t to
the customer. For example, it is generally recommended that there is a Check
Valve installed between the Chlorine Feeder / Generator and the Heater. Given
that FlowVis models for 1.5”, 2” and 2.5” plumbing have an integrated Check
Valve, this would be an ideal location to install FlowVis.
Fig.1.7