H2flow FLOWVIS User manual

FlowVis® digital
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English
Rev.1.1
10/2019
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Operating Manual (EN)

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table of contents
Description .............................................................................................................3
Compatibility .........................................................................................................3
Safety Information ..............................................................................................3
What’s included....................................................................................................4
Dimensions.............................................................................................................5
Installation ..............................................................................................................5
Wiring........................................................................................................................ 6
Output.......................................................................................................................7
Programming.........................................................................................................8
Operation ................................................................................................................8
Advanced Setup ..................................................................................................9
Auxiliary Relay ......................................................................................................11
Display Features..................................................................................................13
Troubleshooting................................................................................................... 13
Environmental.......................................................................................................14
Standards & Approvals.....................................................................................14
Specifications........................................................................................................15
Warranty ..................................................................................................................16
2

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description
FlowVis Digital is the latest and most significant upgrade to date to the renowned FlowVis family. By adding Digital
functionality to the already unrivaled accuracy and flexibility of FlowVis flow meters, users will now experience even greater
functionality, ease of use, and precision. Unique features such as Pool Turnover Rate, and an ability to set flow rate alarms, will
further enhance the industry’s most respected flow meter.
FlowVis Digital employs a magnetic field sensor array to accurately measure the precise flow rate. A remote digital display,
housed in a NEMA 4X corrosion resistant enclosure, will display the flow rate in both a digital numeric value as well as in a
bar-graph format.
Even with the ability to install FlowVis in tight spaces and with almost zero straight pipe requirements, it can sometimes be
dicult to install the device in a location that makes it easy to read. FlowVis Digital solves this problem by allowing you to
install a Digital readout in a user accessible location.
In addition to greater installation flexibility, the Digital upgrade will also eliminate the possibility of experiencing a parallax
error issue when reading the standard FlowVis.
Note: Parallax error can be caused by not looking at the FlowVis scale squarely – akin to a passenger in a car looking at the
speedometer and seeing a dierent reading to the driver. Additional details relating to this, can be found on Page 12 of the
FlowVis Operating Manual.
Using the ‘Advanced Setup’ features, FlowVis Digital can be interfaced with other systems such as heaters, chemical feeders
and UV units, so that they will only operate above a user defined flow rate. When using this option, it will be necessary to
include the Auxiliary Interface Unit with your purchase.
compatibility
FlowVis Digital is designed to be included (as an option) with any new FlowVis installation. Alternatively, it can be retrofitted to
an existing FlowVis – regardless of the size or model. For retrofit installations however, it is important to specify which FlowVis
model the ‘Digital’ is to be used on, as there are hardware dierences to be considered.
3
a) Electrical: The FlowVis ‘Digital’ utilizes a 120VAC to 12VDC power supply that needs to be plugged into a standard
120V receptacle. The power supply cord should be firmly inserted into the receptacle, and a plug restraining clamp should
be added, if any of the FlowVis Digital’s outputs are being interfaced to other equipment such as VFDs, Heaters, Chemical
Feeder or any safety related equipment.
b) Mechanical: The FlowVis Digital sensor housing should only be secured to the FlowVis lid using the two extra long 1”
(25mm) stainless steel Phillips head screws provided.
safety information
WARNING
ALL CONNECTIONS MUST BE MADE BY A QUALIFIED ELECTRICIAN. ELECTRIC SHOCK CAN CAUSE
SERIOUS INJURY OR EVEN DEATH.
IMPORTANT INSTALLATION NOTE Installers should read the section ‘Advanced Setup’ prior to
installation. This section details the need for a Windows-PC with internet connection to complete an advanced setup.

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what’s included
Complete FlowVis and FlowVis Digital installation:
what’s included
Retrofitting FlowVis Digital to existing FlowVis installation:
Fig 1.4 120VAC to 12VDC
Power Supply
Fig 1.5 NEMA 4X
enclosure with pre-
mounted Display and cable
glands
Fig 1.6 Sensor with
standard cable
Fig 1.7 x2 extended length
lid screws
Fig 1.8 Optional extension
cable (if purchased)
Fig 1.9 For 1.5”, 2”, 2.5”
FlowVis models: New
flapper with attached
indicator arm with magnet
Fig 2.0 For 3” and 4”
FlowVis models: Complete
new lid assembly
Fig 2.1 Optional Auxiliary
Interface Unit
Fig 1.0 FlowVis flow meter
with pre-installed sensor
and cable
Fig 1.1 120VAC to 12VDC
Power Supply
Fig 1.2 NEMA 4X
enclosure with pre-
mounted Display and
cable glands
Fig 1.3 Optional extension
cable (if purchased)
Fig 1.4
120VAC to 12VDC
Fig 1.8
Optional extension
Fig 2.1
Optional Auxiliary
Fig 1.9
For 1.5”, 2”, 2.5”

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dimensions
For product dimensions, please refer to the images below (Fig 2.2 & 2.3). Please note: Dimensions are the same for
FlowVis Digital indoor and outdoor models. *Cable glands supplied; not pictured below; please refer to Fig 1.2 on pg.4.
Cable glands supplied; not pictured below; please refer to Fig 1.2 on pg.4.
5.970” / 151.638mm
6.135” /
155.829mm
3.588” /
91.1352mm
 0.510” /
12.954mm*  0.610” /
15.494mm*
installation
a) Check the contents to make sure that they comply with section titled ‘Complete FlowVis and FlowVis Digital
Installation’, on page 4 of this document.
b) Install the standard FlowVis flow meter in accordance with its manual
c) Mount the FlowVis-Digital Display enclosure in a location that is a) convenient for viewing, b) close enough to
the FlowVis flow meter for the sensor cable length (including any extension cables you may have purchased),
and c) close enough to a 120V receptacle to allow the power supply to connect.
d) Connect the Power Supply low voltage (12VDC), output to the Display
e) Connect the Sensor to the display using either the standard-length cables provided or the extension cable (if
purchased)
Disclaimer: The sensor-to-display cables MUST NOT be cut or spliced in any way. Doing so will invalidate the
FlowVis Digital product warranty. If these cables are longer than needed, we suggest coiling the excess
cable and tying with a zip-tie.
f) Plug in the Power Supply and ensure that the Digital Display illuminates and the blue light on the sensor is
flashing.
g) If being used, connect 4-20 mA output to external equipment such as a VFD
h) If being used, connect the alarm relays
i) Proceed to the Programming Section
How to install a complete FlowVis Digital unit
This section covers two scenarios for installing the FlowVis Digital system:
a) Installation of a FlowVis Digital to a ‘complete’ FlowVis installation.
b) Installation of a FlowVis Digital to a previously installed FlowVis (retrofit)
Fig 2.2
Fig 2.3

6
installation cont.
a) Check the contents to make sure that they comply with section titled ‘Retrofitting FlowVis Digital to Existing FlowVis
Installation’, on page 4 of this document.
b) Remove two FlowVis lid screws that will align with the hole mounting tabs on the sensor
c) Using the two longer lid screws provided, carefully secure the sensor to the lid
d) Mount the FlowVis-Digital Display enclosure in a location that is a) convenient for viewing, b) close enough to
the FlowVis flow meter for the sensor cable length (including any extension cables you may have purchased),
and c) close enough to a 120V receptacle to allow the power supply to connect.
e) Connect the Power Supply low voltage (12VDC), output to the Display
f) Connect the Sensor to the display using either the standard-length cables provided or the extension cable (if
purchased)
g) Plug in the Power Supply and ensure that the Digital Display illuminates and the blue light on the sensor is
flashing.
h) If being used, connect 4-20 mA output to external equipment such as a VFD
i) If being used, connect the alarm relays
j) Proceed to Programming Section
Retrofitting FlowVis Digital to an existing FlowVis installation
wiring
Power Supply Sensor
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Fig 2.4 Fig 2.5

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output
4-20 mA Auxiliary Relay
Auxiliary Relay Connections
Fig 2.6 Fig 2.7
Fig 2.8

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programming
Important Note: It is important to select the correct DIP switch position based on BOTH the model (first column) and the pipe
size (second column) shown in the table below.
FlowVis Model Pipe Size DIP Switch Position
1 2 3 4
FV-C; FV-C-L; FV-C-M-DN50 2” and DN50 ON OFF OFF OFF
FV-C-S; FV-C-S-L 2” ON ON OFF OFF
FV-C; FV-C-L; FV-C-M-DN65 2.5” ON ON ON OFF
FV-C-S; FV-C-S-L 2.5” ON ON ON ON
FV-C-M-DN65-HF-S DN65 OFF ON OFF OFF
FV-3; FV-3-L; FV-C-M-DN80 3” and DN80 OFF OFF ON OFF
FV-4; FV-4-L; FV-C-M-DN100 4” and DN100 OFF OFF OFF ON
FV-6; FV-6-L; FV-C-M-DN150 6” and DN150 OFF ON OFF ON
FV-8; FV-8-L; FV-C-M-DN200 8” and DN200 OFF ON ON OFF
FV-C-15; FV-C-M-DN40 1.5” and DN40 OFF ON ON ON
operation
After setting the DIP Switches to reflect the FlowVis model and Pipe Size employed in your application, the FlowVis Digital
is ready to use. No calibration or further settings are required. However, by default, the FlowVis Digital readout will display
the flow rate in US GPM and the Turnover Rate will show --- (indicating that this function is not activated). If you would like to
change the unit of measurement from US GPM to either LPM or m/hr, and /or activate the pool Turnover Rate function, then it
will be necessary to access these functions as described in the Advanced Setup section.
Fig 2.9 (left) The
default setting for
the DIP switches (all
switches set to the
OFF position).
Fig 3.0 (left) DIP
switch number 1 set
to the ON position.

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advanced setup
Although FlowVis Digital will function as a flow meter without further steps, there are several very useful features that can be
accessed via the ‘advanced setup’ procedures. These features comprise:
• Display of the pool turnover rate
• Changing the display’s appearance at a user-defined flow rate
• Programming an (optional) auxiliary relay to operate external equipment such as a Heater or Chemical Feed System, to
only operate at user defined flow rates
Programming the advanced features will require a Windows-based laptop PC. The initial step is to download the Advanced
Panel Display Software from the internet, we recommend that this be done in an oce environment rather than the pool
equipment room. Note: there is no requirement to connect the laptop to the Display during this initial step.
The laptop PC will require the following:
• Running either a Windows 7, 8, or 10 operating system, using either a 32 or 64-bit configuration
• Microsoft .NET Framework (if you don’t have this, it can be downloaded from www.microsoft.com/net
• A spare USB 2.0 port (for later connection to the Display)
• An internet connection
Step 1 - Download and install the ‘Advanced Panel Display’ Configurator Software:
Launch an internet browser page and go to www.h2flow.net/flowvis-digital-flow-meter and locate the ‘Configurator’ section,
either by click on the tab titled ‘Configurator’ in the page header, or by scrolling down the page to this section.
Click on the ‘Configurator Download’ button. When the Configurator has finished
downloading, open the file, either from your Downloads folder, or from the bar at
the bottom of your browser. Follow the prompts provided by the Setup Wizard
and when asked, click on ‘Save As’. Save the file to either your preferred location
or to the Desktop. The default file name will be APM Configurator.
After downloading the file, double-click on the icon labelled ‘APM Configurator’.
You should then see the following image (right) on your desktop (Fig 3.1):
Click on the ‘Updates’ tab and make sure that the ‘Automatic Updates’
option is checked. If the ‘Automatic Updates’ was not checked, please do so,
close the program and re-launch. If new updates are available, they will be
automatically downloaded and saved to your PC.
The Configurator program has now been successfully installed and your
laptop is ready to connect to the FlowVis Display.
Fig 3.1

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advanced setup cont.
Step 2 - Programming the advanced features of the FlowVis Digital Display
Connect the Display to your PC using the Type A to Type B cable that was delivered with your FlowVis Digital
Open the FlowVis Configurator Program to display the following screen:

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advanced setup cont.
Step 5 - Enabling a Display and Auxiliary Relay Alarm
FlowVis Digital enables the user to program the Display to either flash, change color, or both, whenever a flow rate condition
is reached. The desired condition is set as a flow rate value that is either:
1. Above the value set
2. Blow the value set
3. In between the two values set*
4. Outside of the two values set*
*For either option c) or d), a second window will appear that will allow you to enter the second value.
Example: You want the Display backlight to flash red when below 25 GPM.
Solution: a) Check the box that is labeled ‘Change Backlight’, b) Select the option to ‘Flash’, c) Select the option labeled
‘Below’, d) Enter the value ‘25’.
Step 6 - Setting the degree of Sensitivity
It is quite common to see turbulence in the flow stream; this may be caused by other equipment such as heaters, filters or
even simply other plumbing fittings such as tees or elbows. Under such conditions, it is advisable to set the sensitivity to its
default value of ‘Low’ - meaning that the flow readings and any features related to that reading (such as the Turnover Rate or
the Visual Alarm), are not too erratic in their readings.
auxiliary relay (optional kit)
The Auxiliary Relay option is a valuable feature that allows the FlowVis Digital user to control external devvices such as
Heater and Chemical Feeders at user-defined flow rates. For example, you may want to control the Chemical Feeder to
operate only above 20 GPM.
The Auxiliary Relay option kit installs into the rear of the FlowVis Digital Display enclosure and comprises the following items:
Qty. Item
1 Auxiliary Relay with 12 VDC coil and 2 sets of souble pole / double throw dry contacts
1 Set of relay coil wires
1 Cable zip ties (2) with (1) adhesive pad
6 Crimp style Cable Spades
1 Cable Gland

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auxiliary relay (optional kit) cont.
Installation (internal)
1. Secure Relay by removing adhesive backing tape
2. Attach pre-made blue wire to terminal 1 on Relay
3. Attach pre-made red wire to terminal 0 on Relay
4. After removing protective film, attach Cable Pad to rear of hinged door in location shown
5. Use Zip Ties as shown
6. Connect blue wire to terminal marked ‘SP2’ on rear of Display
7. Connect red wire to terminal marked ‘PSU+’ on rear of Display
8. Drill hole 5/8” (16mm) diameter hole for Cable Gland Be careful not to damage Relay
1
2 3
4 5
6
7
8
Installation (external)
The Auxiliary Relay comprises two sets of double pol / double throw dry contacts. Both sets of contacts will operate at the
same programmed flow rate as set in Step 5 above. Each of the two sets of contacts has a normally open and a normally
closed relay. The ‘normal state’ is the condition that the contacts are in before they are activated by the coil is energized by
the programming value. Please refer to the Auxiliary Relay Connection Diagram show on Page 7 of this document.
Using the cable spade connectors provided, connect the external wiring to the required Auxiliary Relay outputs. For example,
if the Heater requires a contact closure to operate, connect the heater enable circuit to either terminals 4 and 2, or 8 and
6. Both of these are normally open contacts that will close when the relay coil is energized by the setting applied in Step 5
above.
1
1
2
3
4
5
6
7
8

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display features
The FlowVis Digital Display comprises certain standard features as well as user-defined parameters / adjustments. Standard
features include a Digital and Bar Graph reading of the measured flow rate. The user has the option to program the Unit
of Measurement to be displayed in either US GPM (default), LPM or M3/hour. The patent pending feature that displays the
Turnover Rate is activated by the user during programming. The Displays format can also be programmed by the user to
change its appearance under prescribed conditions, e.g., flash above or below a certain flow rate.
troubleshooting
FlowVis Digital has been designed to be an easy to install, accurate and reliable addition to the renowned FlowVis flow
meter. However, should an unexpected problem occur, please refer to the following Troubleshooting Guide.
As always, please feel free to contact us with any questions or concerns. Tel: [phone]
Graphical display
of flow rate
Unit of measurement
options: US GPM,
LPM, m/h
Digital readout of
flow rate
Pool turnover rate
in hours
H2flow Controls
internal reference
only
Observation Solution
Digital Display not
illuminated
• Check Power Supply is plugged into its receptacle, if yes...
• Check for 12 VDC power at terminals PSU+ and PSU- on rear of Display, if no voltage...
• Check to see if wires from the Power Supply are securely terminated into the PSU+ and
PSU- terminals, if yes...
• Check to see if 120V power source is active. If yes, Power Supply needs to be replaced
Digital Display reads
zero flow rate with pump
running
• Is Display illuminated? If yes...
• Check to see if FlowVis is reading the expected flow. If yes...
• Check to see if there is a blue flashing light on the sensor. If no...
• Check sensor wiring and terminations into the rear of the Display - red wire to I input +,
black wire to I input -, and green wire to COM. Is everything is secure and correct? If yes...
continued on next page

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environmental
See specification section for environmental operating conditions.
For product disposal, follow all local environmental requirements mandated for plastic and electronic equipment.
standards & approvals
Power Supply cUL
Display UL, cUL and CE
Display & Sensor NSF 50 pending
troubleshooting cont.
Observation Solution
Digital Display not
illuminated (continued
from previous page)
• Is this a retrofit to an existing FlowVis? If yes, did you install a new lid assembly that is
‘Digital’ compatible? If no...
• Contact H2flow for further guidance
Digital Display is reading
a flow rate that is
significantly different to
the FlowVis
• Check that the DIP switch settings applied in ‘Programming’ section, correcly related
to the FlowVis model being used. If applied correctly, please contact H2flow for further
guidance.
Turnover rate appears to
be inaccurate
• The turnover rate is calculated by the programmed pool volume, divided by the flow
rate. Perform a manual calculation as follows: (Pool Volume ÷ Flow Rate from FlowVis) ÷
60 = Turnover rate in hours. If this number is different to the value shown on the FlowVis
Display, reconnect your laptop and check that the pool volume has been accurately
entered.
External equipment such
as a Heater or Chemical
Feeder, that is being
controlled by the Auxiliary
Output, is turning on and
off erratically
• Reconnect laptop PC and check that the Sensitivity Level has been set to ‘Low’. If yes...
• Check the flow rate reading is well above (or below) the set level programmed to turn on
(or off) the Auxiliary Output. If the actual flow rate is close to the set value, and there is
turbulence causing the flow rate to be erratic, consider adjusting the set point value.
Display is showing
the wrong unit of
measurement
• Connect your laptop and check to see the required Unit of Measurement (US GPM, LPM
or M3/hour) has been selected. Change as necessary.

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specifications
Display Enclosure
Enclosure Material ............................................................. ABS
Rating ..................................................................................... NEMA 4X / IP66
Dimensions........................................................................... 6” x 6” x 3.5” / 152mm x 152mm x 90mm (HxWxD)
Mounting Brackets (4)....................................................... Stainless Steel
Display
Display ................................................................................... LCD
Backlight Colors.................................................................. Red, Green, White
Display Cable with Socket .............................................. 138” (3.5M) long
Sensor
Sensor Housing Material ................................................. Polycarbonate (clear)
Molded Cable with Plug................................................... 20” (0.5M) long
Display to Sensor Extension Cable (optional)
Pre-formed with Attached Plug and Socket .............. 25 feet (7.62M) long
Power Supply
Power Connection ............................................................. Receptacle style
Power Source...................................................................... 120-240VAC, 0.5 Amps
Power Output ...................................................................... 12 VDC, 1.0 Amps
Low Voltage Cable Length.............................................. 60” (1.52M)
User Extendable................................................................. Yes, but polarity sensitive
Auxiliary Relay
Output Contacts ................................................................. Double Pole, Double throw Form C Dry Contacts
Contact Ratings................................................................... 20A max
Relay Coil.............................................................................. 12VDC (sourced and controlled by the Display)
Analog Output (4-20mA)
Scaled to............................................................................... 4 mA = zero flow, 20 mA = max flow rate limit of installed FlowVis
Output Format..................................................................... Voltage sourced from FlowVis Digital Display
Maximum Load.................................................................... 250 ohms
Accuracy
Flow Rate Accuracy........................................................... >98% for all FlowVis models
Environmental
Operating Temperature.................................................... 32 to 122°F (0 to 50°C)
Storage Temperature........................................................ -4 to 140°F (-20 to 60°C)

warranty
H2flow Controls, Inc., 3545 Silica Road, Unit F, Sylvania, OH 43560 U.S.A.
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For international sales and service, please visit our website: www.h2flow.net
Release 1.1 10/19 English
Definition
H2flow Controls, Inc., warrants the FlowVis® product for 3-years from its date of supply from H2flow Controls, Inc. or its
stocking Distributor. In the event that the product experiences a premature failure due to defective workmanship or materials,
H2flow will, at its discretion, replace either the failed component(s) or the complete FlowVis unit. H2flow shall not be
responsible for third-party labor or any consequential losses. Damage caused by improper installation, misuse or exposure to
excessive chemicals such as chlorine, will not be covered by this warranty.
Eligibility
This warranty extends to the original purchaser only or to the end-user client of an H2flow Controls Inc. authorized aliate.
How to obtain service
To obtain service under the terms of this warranty, the customer is required to notify H2flow Controls Inc. before the expiration
of the warranty period and to return the item in accordance with H2flow 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 H2flow Controls Inc. incur additional cost as a result of a failure to complete the appropriate
paperwork, an administrative charge may be levied.
Exclusions
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate care.
H2flow 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 H2flow 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 4 of this manual.
Charges
Under cover of this warranty, H2flow Controls Inc. will pay the carriage and insurance charges for the
shipment of defective product back to H2flow Controls Inc. and for its return to the client’s original site
of dispatch except when:
a) H2flow 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 H2flow 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 H2flow Controls Inc. is the same, or has equivalent protective
qualities, to that used to ship the product to the customer in the first instance. Any damage resulting from the use of
inadequate packaging will nullify H2flow Controls Inc’s obligations under this warranty.
Should the customer’s product be damaged in transit following a repair at H2flow 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 H2flow Controls Inc’s obligations under this warranty.
THIS WARRANTY IS GIVEN BY H2FLOW CONTROLS INC. IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED 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.
IMPORTANT, PLEASE READ AND KEEP THIS DOCUMENT ON RECORD.