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Typical No. of
Application Elements
Ozone Absorption 7
pH Control 7
Gas/Gas Blending 7
Dilution of Chemicals 7
Polyelectrolyte Dilution 14
SELECTION GUIDE
For each application, the designer
must first determine the number of
mixing sections required to achieve
a complete mix. The guidelines
below are based upon the Reynolds
Number of your system. Also
included are tables with some
general application guidelines.
Next, the designer should select a
diameter and/or a construction that
will give the desired mixing
performance without exceeding your
system’s maximum allowable
pressure drop (see item 3 below).
1.Calculate the Reynolds
Number. Use the diameter given
in the charts. If both inside and
outside diameters are supplied,
use the inside diameter
3157 x Q x S
RE =
D x MU
2. Select a model based on the
Reynolds Number.
FMX7000 Series Mixers:
No. of
Reynolds No. Elements
800 to1000 14
>1000 7
Note: If the pressure drop across the
mixer exceeds its maximum rating, a
modular mixer is required. For example,
if a 24-element FMX8300 mixer is required
and the pressure drop exceeds the 250 psi
rating, we recommend coupling two
12-element mixers in series.
Symbols
RE = Reynolds Number—
Dimensionless
Q = Flow rate in Gallons/Minute
S = Specific Gravity—
Dimensionless
MU = Viscosityin Centipoise
D = Diameterin Inches
DP = Pressure Drop in psi
L = Laminar Factor—
See Mixer Tables
T = Turbulent Factor—
See Mixer Tables
FMX8000 Mixers:
No. of
Reynolds No.
Elements
<10 24 to 32
10 to 500 16 to 24
500 to 2000 8 to 16
>2000 4 to 8
3. Determine the Pressure Drop
Laminar Flow:
Reynolds Number < 500
DP = Q x MU x L
Turbulent Flow:
Reynolds Number > 500
DP = Q
2
x S x T
Typical No. of
Application Elements
1-1 Epoxies 24
Urethanes/Elastomers 32
Urethane Foam 16
In-line Aeration 8
Admixing of Additives 8
FMX7212-CP, $92.
All shown smaller
than actual size.
FMX8411-S, $173.
FMX9611, $227.
FMX9602, $148.
FMX7232, $203.
FMX8125-P, $39.
FMX7104-P, $42.
STATIC MIXERS
A Technical Introduction
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L
The FMX7100 and FMX8100 series
mixing elements are injection
molded in one operation to ensure
low cost with excellent quality.
The FMX7100 series are
specifically designed for low
viscosity applications. The
FMX8100 plastic spiral elements
were developed for adhesive and
sealant and other high viscosity
mixing applications. The leading
and trailing edges of the FMX8000
mixers are “Knife Edged” so that
the unit flushes clean with less
solvent—no flat leading edges to
accumulate material.
Polyacetal is completely inert to
most common solvents, such as
MEK acetone, and methylene
chloride for use in the Adhesive
and Insulation industries. Its
maximum service temperature is
250°F. Polyacetal is not
recommended for service with
bases or acids. Polypropylene has
excellent chemical resistance and
a maximum service temperature
to 200°F. Metal or plastic tubing
may be used to house the mixing
sections. However, to achieve
maximum performance, the
sections must fit snugly inside the
tube. Accepted tolerance is no
more than 2% greater than the
mixer diameter.
MIXING ELEMENTS
FMX7100/8100 Series
Starts at
$
16
FMX7104-P, low viscosity
mixing element, $42.
FMX8125-P, high viscosity
mixing element, $39.
Both shown larger than actual size.
MOST POPULAR MODELS HIGHLIGHTED!
Ordering Examples: FMX7104-P, polypropylene low viscosity mixing elements, package of 10, $42.
FMX8125-P, polyacetal high viscosity mixing elements, package of 10, $39.
To Order
(Specify Model Number)
Price
Factors
Model No. Package of 10 Diameter Elements Length L T Material
Low Viscosity Mixing Elements
FMX7103-AC $16 0.300 in 7 1.4 in 0.18 8.74 Polyacetal
FMX7103-P 40 0.300 in 7 1.4 in 0.18 8.74 Polypropylene
FMX7104-AC 20 0.432 in 7 2.5 in 0.06 2.18 Polyacetal
FMX7104-P 42 0.432 in 7 2.5 in 0.06 2.18 Polypropylene
FMX7106-AC 32 0.685 in 7 4.2 in 0.015 0.276 Polyacetal
FMX7106-P 51 0.687 in 7 4.2 in 0.015 0.276 Polypropylene
FMX7109-AC 44 0.903 in 7 5.3 in 0.0066 0.092 Polyacetal
FMX7109-P 78 0.906 in 7 5.3 in 0.0066 0.092 Polypropylene
FMX7113-AC 61 1.375 in 7 8.0 in 0.0018 0.0172 Polyacetal
FMX7113-P 103 1.380 in 7 8.0 in 0.0018 0.0172 Polypropylene
FMX7120-AC 97 2.040 in 5 9.0 in 0.0003 0.0018 Polyacetal
FMX7120-P 136 2.050 in 5 9.0 in 0.0003 0.0018 Polypropylene
High Viscosity Mixing Elements
FMX8112-AC $16 0.125 in 12 1.3 in 1.29 328.7 Polyacetal
FMX8112-P 34 0.125 in 12 1.3 in 1.29 328.7 Polypropylene
FMX8118-AC 17 0.187 in 16 2.5 in 0.5152 104.7 Polyacetal
FMX8118-P 36 0.187 in 16 2.5 in 0.5152 104.7 Polypropylene
FMX8124-AC 17 0.250 in 16 4.0 in 0.216 35.7 Polyacetal
FMX8125-P 39 0.251 in 16 4.0 in 0.216 35.7 Polypropylene
FMX8137-AC 21 0.370 in 12 3.9 in 0.048 4.27 Polyacetal
FMX8137-P 43 0.373 in 12 3.9 in 0.048 4.27 Polypropylene
FMX8149-AC 31 0.498 in 12 5.1 in 0.0192 1.23 Polyacetal
FMX8150-P 51 0.500 in 12 5.1 in 0.0192 1.23 Polypropylene