H2flow FLOWVIS User manual

FlowVis®
H2flowControls,Inc.
3545 Silica Road
Unit F
Sylvania, OH 43560
USA
Tel: [phone]
Fax: [phone]
E-mail: sales@h2 ow.net
www.h2 ow.net
Flow Meter
Instruction Manual
H2flowControls,Inc.

TABLEOFCONTENTS
Section Content Page
1.0 Description 3
2.0 Concept 3
3.0 NSF 50 3
4.0 NSF 50 Mark 3
5.0 Applications 4
6.0 Warnings & Safety 4
7.0 Models 4
8.0 Installation 5
9.0 Operation 6
10.0 Maintenance 6
11.0 Speci cations 7
12.0 Warranty 8 (back cover)
IMPORTANT-PLEASEREADTHEFOLLOWING
INSTRUCTIONSBEFOREINSTALLINGFLOWVIS®
FlowVis® - INSTRUCTION MANUAL Page 2
IMPORTANT DISCLAIMER REGARDING CHLORINE GASES: FlowVis® is
renowned for its ability to have virtually no installation limitations. However, some
low grade chlorinators and other chemical feeder systems may not prohibit chemical
introduction into the system when the pool’s fi ltration system is shut down. In these
circumstances, chlorine gas will develop and will normally rise to the highest point
possible in the fi ltration system. FlowVis® should never be installed at this location as
damage will quickly occur to its internal components. H2fl ow will not be responsible for
replacing a FlowVis® unit if it is apparent that the damage has occurred due to a high
concentration of acidic compounds or other concentrated chemical mixtures that are
acidic.

1.0 DESCRIPTION
FlowVis® is a revolutionary Patent Pending product that converts a standard Check
Valve into a Flow Meter and Check Valve.
The product is currently available in two formats:
a) Retro t to install to an existing Jandy® (7305) 2” by 21/2” Check Valve body -
FV-J.
b) A complete Check Valve body assembled with FlowVis® - FV-C.
c) A complete Check Valve body assembled with FlowVis® and a safety  apper, as
described in section 6 of this manual.
The Retro t kit comprises a fully assembled FlowVis® lid, calibrated spring, pin, indicator
arm, ‘O’-ring and calibrated scale. Installation simply requires the removal of the eight
screws securing the existing lid, installing the new ‘O’-ring and securing the FlowVis®
with the original eight screws.
2.0 CONCEPT
As  ow increases, the check valve  apper extends towards its fully open position. The
angular position of the  apper is determined by the  ow through the valve body. A
calibrated scale on the valve lid provides an accurate reading of  ow.
FlowVis® - INSTRUCTION MANUAL Page 3
Flow
Calibrated Scale
3.0 NSF50
FlowVis® model FV-C has been tested and certi ed as a Flow Meter to NSF 50.
Calibrated Scale
4.0 NSF50Mark
Models certi ed to NSF 50 will comprise the Mark as shown
in the image to the right.

FlowVis® - INSTRUCTION MANUAL Page 4
The Virginia Graeme Baker Pool & Spa Act requires
that all public swimming pools & spas that have 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.
Anoptionalnon-sealingflapperisavailablefor
theseinstallations.
7.0 MODELS
FlowVis® is available in two di erent models:
Model# Description
FVJ-R Retro t kit for existing Jandy® 7305 Check Valve
FV-C Fully-assembled FlowVis®
FV-C-S Fully assembled FlowVis® with safety  apper
6.0 WARNINGS&SAFETY
Check Valves should always be installed in accordance with the original manufacturer’s
instructions. When purchased as a complete Check Valve & Flow Meter combination, a
copy of these instructions will be included with the FlowVis® packaging. If a FlowVis®
retro t kit has been purchased, it is the installer’s responsibility to ensure that the Check
Valve has been installed correctly and does not violate any local or federal codes relating
to Check Valves.
5.0 APPLICATIONS
FlowVis® is speci cally designed for use in fresh water applications (i.e., swimming
pools, spas, fountains, water features, etc). It is not suitable for applications that are
contaminated with debris of such a size that it would prevent the check valve  apper
from fully seating against the valve body.

FlowVis® - INSTRUCTION MANUAL Page 5
8.0INSTALLATION
Installation of the FlowVis® should be in accordance with the following instructions.
Normal plumbing procedures such as cleaning, priming and gluing of  xtures should be
followed in order to avoid leaks.
Unlike other  ow meters, FlowVis® is not e ected by  ow stream disturbances caused
by its proximity to pumps, elbows, tees, valves etc. FlowVis® does not require speci c
straight pipe lengths before or after its point of installation and can be installed close to,
or even adjacent to other plumbing  ttings. FlowVis® can be installed either horizontally
or vertically.
NOTE: When selecting a physical location to install FlowVis®, be sure to allow accessibil-
ity to read the scale on the lid.

FlowVis® - INSTRUCTION MANUAL Page 6
9.0 OPERATION
The FlowVis® is factory-calibrated to
be extremely accurate across its full
operating range. Any ‘inaccuracy’ is
related to the angle in which the scale
is read. To avoid so-called ‘parallax
error’, it is important to position your
eye so that you are looking squarely
at the tip of the indicator arm. To
achieve this, simply move your head so
that you just lose sight of the vertical
leading edge of the red arm.
NOTE: Slowly move your head in
this direction to the point where the
leading edge of the indicating arm is
not visible.
10.0 MAINTENANCE
Although FlowVis® is designed to be maintenance-free, periodic checks should be made
to the following:
Item Check for Remedy
‘O’ringseal Check for leaks Replace ‘O’ ring
ValveBody Check for cracks or damage Replace entire FlowVis®
Lid Check for cracks or damage Replace entire FlowVis®
IndicatorArm Check to see if sticking due to
build up of debris
Remove lid and  ush out
debris
Lid Air bubbles in lid Check plumbing system for
air leak

FlowVis® - INSTRUCTION MANUAL Page 7
11.0 SPECIFICATIONS
Materialsused:
Item Material / Comments
ValveCoverScrews Stainless Steel
ValveBody CPVC Plastic, Chlorine, Acid resistant
ValveLid Poly Carbonate (PC), Chlorine, Ozone resistant
CalibratedSpring Stainless Steel
PivotPin Stainless Steel
‘O’Ring Silicone-Lubricated Elastomer
Operation:
Function Model(s) Comments NSF 50 Certi ed
MaximumWorking
Pressure
FV-C 50 psi 
DesignPressure FV-C >400 psi 
HeadLosswhen
installedto2”pipe
FV-C 0.77 psi at 20 gpm;
2.23 at 110 gpm 
HeadLosswhen
installedto2.5”pipe
FV-C 0.71 psi at 21.3
gpm; 2.37 psi at
112.6 gpm

Accuracywheninstalled
to2.5”straightpipe*
FV-C Range: 20-110
gpm, average
accuracy: 2.28%

Accuracywheninstalled
to2.5”inbetween
elbows*
FV-C Range: 20-110
gpm, average
accuracy: 1.42%

Minimumoperating
ambienttemperature
All 32ºF (0ºC)
Maximumoperating
ambienttemperature
All 140ºF (60ºC)
PeriodicCalibration All None required
DesignLife All Greater than 5
years
* Accuracy results are on average deviation from the actual fl ow as determined by a NIST calibrated
fl ow meter in the range of 20-110 gpm, and when installed in horizontal, vertical up and vertical down
orientations.

12.0 WARRANTY
IMPORTANT,pleasereadandkeepthisdocumentonrecord.
1. Denition: H2ow Controls Inc. warrants that the products that it manufactures and sells will be free from
defects in material and workmanship for a period of 12 months from the date of shipment.
Should the product prove defective during the warranty period, H2ow Controls Inc, at its discretion, either will
repair the defective product or replace it with an equivalent product in exchange for the defective unit without
charge for parts, labor, carriage and insurance.
2. Eligibility This warranty extends to the original purchaser only or to the end-user client of an H2ow Controls Inc
authorized aliate.
3. How to obtain service
To obtain service under the terms of this warranty, the customer is required to notify H2ow Controls Inc. before
the expiration of the warranty period and to return the item in accordance with H2ow Controls Inc’s product
return policy. Any product returned for warranty repair must be accompanied by a full fault report specifying the
symptoms and the conditions under which the fault occurs. Should H2ow Controls Inc incur additional cost as a
result of a failure to complete the appropriate paperwork, an administrative charge may be levied.
4. Exclusions
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
care. H2ow Controls Inc. shall not be obligated to provide service under this warranty if:
a) damage has been caused by a failure to make a full and proper inspection of the product (as described by the
documentation enclosed with the product at the time of shipment) on initial receipt of the product following
shipment;
b) damage has been caused by the attempts of individuals, other than H2ow Controls Inc sta to repair or service
the product;
c) damage has been caused by the improper use of the product, including but not limited to, the installation of a
FlowVis® unit using a chlorination system as described on page 2 of this manual.
5. Charges
Under cover of this warranty, H2ow Controls Inc will pay the carriage and insurance charges for the
shipment of defective product back to H2ow Controls Inc and for its return to the client’s original site
of dispatch except when:
a) H2ow Controls Inc’s product return policy has not been followed.
b) product failure is caused by any of the exclusions described at paragraph 4 above, when the customer will
be liable for the full cost of the repair (parts and labor) plus all carriage and insurance costs to and from H2ow
Controls Inc’s premises.
c) the product is damaged in transit and a contributory cause is inadequate packaging. It is the customer’s
responsibility to ensure that the packaging used to return equipment to H2ow Controls Inc is the same, or has
equivalent protective qualities, to that used to ship the product to the customer in the rst instance. Any damage
resulting from the use of inadequate packaging will nullify H2ow Controls Inc’s obligations under this warranty.
Should the customer’s product be damaged in transit following a repair at H2ow Controls Inc’s site, a
full photographic record of the damage must be obtained (packaging and the product) to support any claim for
recompense. Failure to present this evidence may limit H2ow Controls Inc’s obligations under this warranty.
THISWARRANTYISGIVENBYH2FLOWCONTROLSINCINLIEUOFANYOTHERWARRANTIES,EXPRESS
ORIMPLIED,INCLUDINGBUTNOTLIMITEDTOANYIMPLIEDWARRANTYOFMERCHANTABILITY,NON
INFRINGEMENTORFITNESSFORAPARTICULARPURPOSE.H2FLOWCONTROLSINCSHALLNOT
BELIABLEFORANYSPECIAL,INDIRECT,INCIDENTALORCONSEQUENTIALDAMAGESORLOSSES.
WESPECIFICALLYDISCLAIMANYANDALLWARRANTIESTOCUSTOMERSOFTHECUSTOMER.THE
CUSTOMER’SSOLEREMEDYFORANYBREACHOFWARRANTYISTHEREPAIRORREPLACEMENT,AT
H2FLOWCONTROLSINC’SDISCRETION,OFTHEFAILEDPRODUCT.
SalesTelephonehotline:(+1)8886350296
SupportTelephonehotline:(+1)4193565374
H2ow Controls Inc.
3545 Silica Road
Unit F
Sylvania, OH 43560
United Sates of America
Fax: [phone]
sales@h2ow.net Release 2.8
8/26/13