3
Model
OF744
OF844
OF948
OF1054
Max Service Flow (gpm)
10
12
16
20
Dry Weight (lbs)
22
25
29
35
Service Weight (lbs)
80
97
129
168
a
b
c
e
d
Exceeding maximum flow rate can reduce and void warranty
Pressure drop at peak flow rate is less than 10 psi.
Pressure drop reading taken with inlet and outlet gauges installed
at a common elevation and 80 degree feed water.
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.
Dimensions
(nominal - inches)
a
47
47
49
58
b
46
46
48
57
c
7
8
9
10
d
1.0
1.0
1.0
1.0
e
3.0
3.0
3.0
3.0
Feed Water Chemistry Requirements
pH
6.5 to 8.5
Hardness (maximum)
75 grains (1282 ppm CaCO3)
Water Pressure
15psi to 100psi (103 kPa to 6.9 bar)
Temperature
40°F to 100°F (5°C to 38°C)
Chlorine
< 2ppm
Iron (maximum)
0.3 mg/l*
Manganese (maximum)
0.05 mg/l**
Copper (maximum)
1.3 ppm**
Oil & H2S
Must be removed prior to OneFlow
®
Silica (maximum)
20 ppm***
NOTICE
*Iron and Manganese
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.
**Copper
Pursuant to the EPA drinking water standards, the maximum
copper concentration permitted is up to 1.3 ppm. Copper
usually originates from new copper plumbing upstream of
the OneFlow® system and high levels of copper can foul
OneFlow media. To further minimize any problem with excess
copper, avoid applying excess flux on the inner surfaces of
the pipe and to use a low-corrosivity water soluble flux listed
under the ASTMB813 standard. For applications with copper
concentration greater than 1.3 ppm, please contact Watts Pure
Water Technical Service at 1-800-224-1299.
NOTICE
***Silica
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.
NOTICE
NOTICE
Water known to have heavy loads of dirt and debris may require
pre-filtration prior to OneFlow
®
.
* See note about iron, manganese and copper at top of this page.
Systems using OneFlow
®
technology prevent hard water scale
formation inside the plumbing system at influent hardness levels
of 75 grains per gallon of calcium carbonate and less. Due to
variances in water chemistry, certain aesthetic conditions external
of the plumbing system may not be attained.
OneFlow
®
is designed for the treatment of potable water that
meets the requirements of the current USEPA Safe Drinking
Water Act.
Mechanical Specifications
Inlet/Outlet Connection
MODEL
FITTINGS
A
3/4" Sweat
B
1" Sweat
C
1" Plastic MPT
D
1-1/4" Plastic MPT
E
1" Plastic MPT 90 Elbow
