3
Equipment
Specifications
OneFlow
®
systems are complete, self-
contained, loaded with media, and ready to
use. A simple inlet and outlet connection is all
that is required for installation. Please review
operating pressures, temperatures and water
chemistry limitations to ensure compatibility.
Replacement Media
Weights and Dimensions (nominal - inches)
MODEL
OF1354-30TM
OF1465-50TM
OF1665-75TM
Dry Weight
75 lbs.
34 kgs.
98 lbs.
44 kgs. 120 lbs. 54 kgs.
Service Weight
397 lbs. 180 kgs. 442 lbs. 201 kgs. 521 lbs. 236 kgs.
Dimensions
A - 13
B - 57.7
A - 14
B - 68.8
A - 16
B - 68.8
MODEL
REPLACEMENT FREQUENCY
OF1354RM
Media should be replaced every 3 years
OF1465RM
Media should be replaced every 3 years
OF1665RM
Media should be replaced every 3 years
Connections
MODEL
INLET/OUTLET CONNECTION
OF1354-30TM
2" PVC FNPT
OF1465-50TM*
2" PVC FNPT
OF1665-75TM*
2" PVC FNPT
B
A
Maximum Flow Rate ***
MODELS
GPM
LPM
OF1354-30TM
30
114
OF1465-50TM
50
189
OF1665-75TM
75
284
*** Exceeding maximum flow can reduce effectiveness and void warranty.
Pressure drop at peak flow rate is less than 22psi.
Pressure drop reading taken with inlet and outlet gauges installed at a
common elevation and 80ºF feed water.
Intermittent Duty Systems
MODEL
FLOW RATE
OF1354-30TM
30 GPM at all temperatures
OF1465-50TM
50 GPM at all temperatures
OF1665-75TM
75 GPM at all temperatures
Intermittent duty is defined as less than 2 hours of Maximum
Flow per 24 hour period. Higher Flow rates can be achieved by
combining systems in an array.
Maximum Service Flow (gpm) vs.
Water Temperature
SYSTEM
40°F
45°F
50°F
55°F
60°F
65°F
70°F
OF1354-30TM
20
24
28
30
30
30
30
OF1465-50TM
40
44
48
50
50
50
50
OF1665-75TM
45
51
56
59
63
69
75
NOTICE
*For models OF1465-50TM and OF1665-75TM, Two 2" MNPT Flex
Connectors are included and required for each tank installation
NOTICE
* Systems using OneFlow
®
technology are effective at
controlling lime-scale formation inside the plumbing system at
influent hardness levels up to 75 grains per gallon (1282 mg/L)
of calcium carbonate. Due to variances in water chemistry,
30 grains per gallon is a recommended hardness maximum
due to potential aesthetic issues related to soft scale residue
formation outside of the plumbing system. Testing should be
performed to determine proper application where hardness
levels exceed 30 grains per gallon.
** Just as with conventional water softening media, OneFlow
®
media needs to be protected from excess levels of certain
metals that can easily coat the active surface, reducing its
effectiveness over time. Public water supplies rarely, if ever,
present a problem, but if the water supply is from a private
well, confirm that the levels of iron (Fe) and manganese (Mn)
are less than 0.3 mg/L and 0.05 mg/L, respectively.
*** Pursuant to the EPA drinking water standards, the copper
concentration permitted is up to 1.3 ppm. Typically
originating from new copper plumbing, high levels of
copper can foul OneFlow media. New Copper lines need
to be passivated for a minimum of 4 weeks before placing
unit into service. For applications with copper concentration
greater than 1.3 ppm, please consult Watts Water Quality
Technical Service. To further minimize any problem with
excess copper, avoid applying excessive flux on the inner
surfaces of the pipe and use a low-corrosivity water soluble
flux listed under the ASTM B813 standard.
WARNING
!
Feed Water Chemistry Requirements
pH
6.5-8.5
Hardness (maximum)
30 grains (513 ppm CaCO3) *
Water Pressure
15psi to 100psi (1.03 bar to 6.9 bar)
Temperature
40°F to 100°F (5°C to 38°C)
Free Chlorine
<2 ppm
Iron (maximum)
0.3 ppm **
Manganese (maximum)
0.05 ppm **
Copper (maximum)
1.3 ppm***
Oil & H2S
Must be Removed Prior to OneFlow
Total Phosphates
<3.0 ppm
Silica (maximum)
20 ppm †
TDS
<1500 mg/L ††
NOTICE
† OneFlow
®
media does not reduce silica scaling. While silica
tends to have a less significant effect on scale formation than
other minerals, it can act as a binder that makes water spots
and scale residue outside the plumbing system difficult to
remove. This 20 ppm limitation is for aesthetic purposes.
†† All other contaminants must meet the requirements of the
USEPA Safe Drinking Water Act. Specific Mineral and Metal
MCL's, identified in Watts published Feed Water Chemistry
Requirements, supersedes the USEPA SDWA.
Water known to have heavy loads of dirt and debris may require
pre-filtration prior to OneFlow
®
.
